Race condition in the v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4289 advisory.

  - An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display     driver. This flaw could occur while refreshing the VNC display surface area in the     'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.
    (CVE-2017-2633)

  - Integer overflow in the load_multiboot function in hw/i386/multiboot.c in QEMU (aka Quick Emulator) allows     local guest OS users to execute arbitrary code on the host via crafted multiboot header address values,     which trigger an out-of-bounds write. (CVE-2017-14167)

  - The mode4and5 write functions in hw/display/cirrus_vga.c in Qemu allow local OS guest privileged users to     cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst     calculation. (CVE-2017-15289)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5715)

  - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized     disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5753)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis     of the data cache. (CVE-2017-5754)

  - The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.
    (CVE-2018-5683)

  - QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS     privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors     involving display update. (CVE-2017-13672)

  - Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows     attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear     ifq_so from pending packets. (CVE-2017-13711)

  - VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an     unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If     the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A     malicious remote VNC client could use this flaw to cause DoS to the server host. (CVE-2017-15124)

  - Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c. (CVE-2017-15268)

  - Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest     OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by     leveraging incorrect region calculation when updating VGA display. (CVE-2018-7858)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS     users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than     mh_bss_end_addr, which triggers an out-of-bounds read or write memory access. (CVE-2018-7550)

  - m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.
    (CVE-2018-11806)

  - qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in     QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when     trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP     command (including guest-file-read with a large count value) to the agent via the listening socket.
    (CVE-2018-12617)

  - Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System (9pfs) support,     is vulnerable to an improper access control issue. It could occur while accessing files on a shared host     directory. A privileged user inside guest could use this flaw to access host file system beyond the shared     folder and potentially escalating their privileges on a host. (CVE-2017-7471)

  - A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network     Block Device (NBD) client support. The flaw could occur while processing server's response to a     'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting     in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
    (CVE-2017-2630)

  - Stack-based buffer overflow in hw/usb/redirect.c in QEMU (aka Quick Emulator) allows local guest OS users     to cause a denial of service (QEMU process crash) via vectors related to logging debug messages.
    (CVE-2017-10806)

  - The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS     privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by     leveraging use of qemu_map_ram_ptr to access guest ram block area. (CVE-2017-11334)

  - The Virtio Vring implementation in QEMU allows local OS guest users to cause a denial of service (divide-     by-zero error and QEMU process crash) by unsetting vring alignment while updating Virtio rings.
    (CVE-2017-17381)

  - Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support,     is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in     mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
    (CVE-2017-7493)

  - hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial     of service (infinite loop and CPU consumption) via the message ring page count. (CVE-2017-8112)

  - QEMU (aka Quick Emulator), when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allows     local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process     crash) via vectors involving megasas command processing. (CVE-2017-9503)

  - QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local     guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash)     by flushing an empty CDROM device drive. (CVE-2017-12809)

  - Race condition in the v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local     guest OS users to obtain sensitive information from host heap memory via vectors related to reading     extended attributes. (CVE-2017-15038)

  - The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of     service issue. It could occur if a client sent large option requests, making the server waste CPU time on     reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other     requests, resulting in DoS. (CVE-2017-15119)

  - hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-     of-bounds access. (CVE-2017-16845)

  - The cirrus_invalidate_region function in hw/display/cirrus_vga.c in Qemu allows local OS guest privileged     users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related     to negative pitch. (CVE-2017-18030)

  - Integer overflow in the macro ROUND_UP (n, d) in Quick Emulator (Qemu) allows a user to cause a denial of     service (Qemu process crash). (CVE-2017-18043)

  - Memory leak in the audio/audio.c in QEMU (aka Quick Emulator) allows remote attackers to cause a denial of     service (memory consumption) by repeatedly starting and stopping audio capture. (CVE-2017-8309)

  - Memory leak in the keyboard input event handlers support in QEMU (aka Quick Emulator) allows local guest     OS privileged users to cause a denial of service (host memory consumption) by rapidly generating large     keyboard events. (CVE-2017-8379)

  - Buffer overflow in the megasas_mmio_write function in Qemu 2.9.0 allows remote attackers to have     unspecified impact via unknown vectors. (CVE-2017-8380)

  - The vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen     mode is used causing a denial of service (assertion failure) in the cpu_physical_memory_snapshot_get_dirty     function. (CVE-2017-13673)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4285 advisory.

  - An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display     driver. This flaw could occur while refreshing the VNC display surface area in the     'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.
    (CVE-2017-2633)

  - Integer overflow in the load_multiboot function in hw/i386/multiboot.c in QEMU (aka Quick Emulator) allows     local guest OS users to execute arbitrary code on the host via crafted multiboot header address values,     which trigger an out-of-bounds write. (CVE-2017-14167)

  - The mode4and5 write functions in hw/display/cirrus_vga.c in Qemu allow local OS guest privileged users to     cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst     calculation. (CVE-2017-15289)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5715)

  - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized     disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5753)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis     of the data cache. (CVE-2017-5754)

  - The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.
    (CVE-2018-5683)

  - QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS     privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors     involving display update. (CVE-2017-13672)

  - Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows     attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear     ifq_so from pending packets. (CVE-2017-13711)

  - VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an     unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If     the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A     malicious remote VNC client could use this flaw to cause DoS to the server host. (CVE-2017-15124)

  - Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c. (CVE-2017-15268)

  - Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest     OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by     leveraging incorrect region calculation when updating VGA display. (CVE-2018-7858)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS     users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than     mh_bss_end_addr, which triggers an out-of-bounds read or write memory access. (CVE-2018-7550)

  - m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.
    (CVE-2018-11806)

  - qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by     leveraging mishandling of the seccomp policy for threads other than the main thread. (CVE-2018-15746)

  - qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows     attackers to cause a denial of service or possibly have unspecified other impact. (CVE-2018-17963)

  - Qemu has a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is     used. (CVE-2018-17962)

  - Qemu has a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data     type is used. (CVE-2018-17958)

  - Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow,     which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user     inside guest could use this flaw to crash the Qemu process resulting in DoS. (CVE-2018-10839)

  - qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in     QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when     trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP     command (including guest-file-read with a large count value) to the agent via the listening socket.
    (CVE-2018-12617)

  - Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System (9pfs) support,     is vulnerable to an improper access control issue. It could occur while accessing files on a shared host     directory. A privileged user inside guest could use this flaw to access host file system beyond the shared     folder and potentially escalating their privileges on a host. (CVE-2017-7471)

  - A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network     Block Device (NBD) client support. The flaw could occur while processing server's response to a     'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting     in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
    (CVE-2017-2630)

  - Stack-based buffer overflow in hw/usb/redirect.c in QEMU (aka Quick Emulator) allows local guest OS users     to cause a denial of service (QEMU process crash) via vectors related to logging debug messages.
    (CVE-2017-10806)

  - The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS     privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by     leveraging use of qemu_map_ram_ptr to access guest ram block area. (CVE-2017-11334)

  - The Virtio Vring implementation in QEMU allows local OS guest users to cause a denial of service (divide-     by-zero error and QEMU process crash) by unsetting vring alignment while updating Virtio rings.
    (CVE-2017-17381)

  - Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support,     is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in     mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
    (CVE-2017-7493)

  - hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial     of service (infinite loop and CPU consumption) via the message ring page count. (CVE-2017-8112)

  - QEMU (aka Quick Emulator), when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allows     local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process     crash) via vectors involving megasas command processing. (CVE-2017-9503)

  - QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local     guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash)     by flushing an empty CDROM device drive. (CVE-2017-12809)

  - Race condition in the v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local     guest OS users to obtain sensitive information from host heap memory via vectors related to reading     extended attributes. (CVE-2017-15038)

  - The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of     service issue. It could occur if a client sent large option requests, making the server waste CPU time on     reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other     requests, resulting in DoS. (CVE-2017-15119)

  - hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-     of-bounds access. (CVE-2017-16845)

  - The cirrus_invalidate_region function in hw/display/cirrus_vga.c in Qemu allows local OS guest privileged     users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related     to negative pitch. (CVE-2017-18030)

  - Integer overflow in the macro ROUND_UP (n, d) in Quick Emulator (Qemu) allows a user to cause a denial of     service (Qemu process crash). (CVE-2017-18043)

  - Memory leak in the audio/audio.c in QEMU (aka Quick Emulator) allows remote attackers to cause a denial of     service (memory consumption) by repeatedly starting and stopping audio capture. (CVE-2017-8309)

  - Memory leak in the keyboard input event handlers support in QEMU (aka Quick Emulator) allows local guest     OS privileged users to cause a denial of service (host memory consumption) by rapidly generating large     keyboard events. (CVE-2017-8379)

  - Buffer overflow in the megasas_mmio_write function in Qemu 2.9.0 allows remote attackers to have     unspecified impact via unknown vectors. (CVE-2017-8380)

  - The vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen     mode is used causing a denial of service (assertion failure) in the cpu_physical_memory_snapshot_get_dirty     function. (CVE-2017-13673)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4585 advisory.

  - An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display     driver. This flaw could occur while refreshing the VNC display surface area in the     'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.
    (CVE-2017-2633)

  - Integer overflow in the load_multiboot function in hw/i386/multiboot.c in QEMU (aka Quick Emulator) allows     local guest OS users to execute arbitrary code on the host via crafted multiboot header address values,     which trigger an out-of-bounds write. (CVE-2017-14167)

  - The mode4and5 write functions in hw/display/cirrus_vga.c in Qemu allow local OS guest privileged users to     cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst     calculation. (CVE-2017-15289)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5715)

  - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized     disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5753)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis     of the data cache. (CVE-2017-5754)

  - The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.
    (CVE-2018-5683)

  - QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS     privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors     involving display update. (CVE-2017-13672)

  - Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows     attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear     ifq_so from pending packets. (CVE-2017-13711)

  - VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an     unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If     the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A     malicious remote VNC client could use this flaw to cause DoS to the server host. (CVE-2017-15124)

  - Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c. (CVE-2017-15268)

  - Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest     OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by     leveraging incorrect region calculation when updating VGA display. (CVE-2018-7858)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS     users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than     mh_bss_end_addr, which triggers an out-of-bounds read or write memory access. (CVE-2018-7550)

  - m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.
    (CVE-2018-11806)

  - qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by     leveraging mishandling of the seccomp policy for threads other than the main thread. (CVE-2018-15746)

  - qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows     attackers to cause a denial of service or possibly have unspecified other impact. (CVE-2018-17963)

  - Qemu has a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is     used. (CVE-2018-17962)

  - Qemu has a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data     type is used. (CVE-2018-17958)

  - Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow,     which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user     inside guest could use this flaw to crash the Qemu process resulting in DoS. (CVE-2018-10839)

  - qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in     QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when     trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP     command (including guest-file-read with a large count value) to the agent via the listening socket.
    (CVE-2018-12617)

  - Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System (9pfs) support,     is vulnerable to an improper access control issue. It could occur while accessing files on a shared host     directory. A privileged user inside guest could use this flaw to access host file system beyond the shared     folder and potentially escalating their privileges on a host. (CVE-2017-7471)

  - A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network     Block Device (NBD) client support. The flaw could occur while processing server's response to a     'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting     in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
    (CVE-2017-2630)

  - Stack-based buffer overflow in hw/usb/redirect.c in QEMU (aka Quick Emulator) allows local guest OS users     to cause a denial of service (QEMU process crash) via vectors related to logging debug messages.
    (CVE-2017-10806)

  - The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS     privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by     leveraging use of qemu_map_ram_ptr to access guest ram block area. (CVE-2017-11334)

  - The Virtio Vring implementation in QEMU allows local OS guest users to cause a denial of service (divide-     by-zero error and QEMU process crash) by unsetting vring alignment while updating Virtio rings.
    (CVE-2017-17381)

  - Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support,     is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in     mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
    (CVE-2017-7493)

  - hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial     of service (infinite loop and CPU consumption) via the message ring page count. (CVE-2017-8112)

  - QEMU (aka Quick Emulator), when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allows     local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process     crash) via vectors involving megasas command processing. (CVE-2017-9503)

  - QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local     guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash)     by flushing an empty CDROM device drive. (CVE-2017-12809)

  - Race condition in the v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local     guest OS users to obtain sensitive information from host heap memory via vectors related to reading     extended attributes. (CVE-2017-15038)

  - The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of     service issue. It could occur if a client sent large option requests, making the server waste CPU time on     reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other     requests, resulting in DoS. (CVE-2017-15119)

  - hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-     of-bounds access. (CVE-2017-16845)

  - The cirrus_invalidate_region function in hw/display/cirrus_vga.c in Qemu allows local OS guest privileged     users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related     to negative pitch. (CVE-2017-18030)

  - Integer overflow in the macro ROUND_UP (n, d) in Quick Emulator (Qemu) allows a user to cause a denial of     service (Qemu process crash). (CVE-2017-18043)

  - Memory leak in the audio/audio.c in QEMU (aka Quick Emulator) allows remote attackers to cause a denial of     service (memory consumption) by repeatedly starting and stopping audio capture. (CVE-2017-8309)

  - Memory leak in the keyboard input event handlers support in QEMU (aka Quick Emulator) allows local guest     OS privileged users to cause a denial of service (host memory consumption) by rapidly generating large     keyboard events. (CVE-2017-8379)

  - Buffer overflow in the megasas_mmio_write function in Qemu 2.9.0 allows remote attackers to have     unspecified impact via unknown vectors. (CVE-2017-8380)

  - The vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen     mode is used causing a denial of service (assertion failure) in the cpu_physical_memory_snapshot_get_dirty     function. (CVE-2017-13673)

  - A flaw was found in qemu Media Transfer Protocol (MTP) before version 3.1.0. A path traversal in the in     usb_mtp_write_data function in hw/usb/dev-mtp.c due to an improper filename sanitization. When the guest     device is mounted in read-write mode, this allows to read/write arbitrary files which may lead do DoS     scenario OR possibly lead to code execution on the host. (CVE-2018-16867)

  - hw/rdma/vmw/pvrdma_main.c in QEMU does not implement a read operation (such as uar_read by analogy to     uar_write), which allows attackers to cause a denial of service (NULL pointer dereference).
    (CVE-2018-20191)

  - A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usb_mtp_get_object and     usb_mtp_get_partial_object and directories in usb_mtp_object_readdir doesn't consider that the underlying     filesystem may have changed since the time lstat(2) was called in usb_mtp_object_alloc, a classical     TOCTTOU problem. An attacker with write access to the host filesystem shared with a guest can use this     property to navigate the host filesystem in the context of the QEMU process and read any file the QEMU     process has access to. Access to the filesystem may be local or via a network share protocol such as CIFS.
    (CVE-2018-16872)

  - hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe     ring element with a large num_sge value. (CVE-2018-20124)

  - QEMU can have an infinite loop in hw/rdma/vmw/pvrdma_dev_ring.c because return values are not checked (and
    -1 is mishandled). (CVE-2018-20216)

  - hw/rdma/vmw/pvrdma_cmd.c in QEMU allows attackers to cause a denial of service (NULL pointer dereference     or excessive memory allocation) in create_cq_ring or create_qp_rings. (CVE-2018-20125)

  - hw/rdma/vmw/pvrdma_cmd.c in QEMU allows create_cq and create_qp memory leaks because errors are     mishandled. (CVE-2018-20126)

  - In Qemu 3.0.0, lsi_do_msgin in hw/scsi/lsi53c895a.c allows out-of-bounds access by triggering an invalid     msg_len value. (CVE-2018-18849)

  - An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could     occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU     process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.
    (CVE-2018-16847)

  - hw/9pfs/cofile.c and hw/9pfs/9p.c in QEMU can modify an fid path while it is being accessed by a second     thread, leading to (for example) a use-after-free outcome. (CVE-2018-19364)

  - v9fs_wstat in hw/9pfs/9p.c in QEMU allows guest OS users to cause a denial of service (crash) because of a     race condition during file renaming. (CVE-2018-19489)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - qemu-kvm is an open source virtualizer that provides     hardware emulation for the KVM hypervisor. qemu-kvm     acts as a virtual machine monitor together with the KVM     kernel modules, and emulates the hardware for a full     system such as a PC and its assocated peripherals. As     qemu-kvm requires no host kernel patches to run, it is     safe and easy to use. Security Fix(es):The     ohci_service_ed_list function in hw/usb/hcd-ohci.c in     QEMU (aka Quick Emulator) before 2.9.0 allows local     guest OS users to cause a denial of service (infinite     loop) via vectors involving the number of link endpoint     list descriptors, a different vulnerability than     CVE-2017-9330.(CVE-2017-6505)** DISPUTED ** QEMU 3.0.0     has an Integer Overflow because the qga/commands*.c     files do not check the length of the argument list or     the number of environment variables. NOTE: This has     been disputed as not exploitable.(CVE-2019-12247)**     DISPUTED ** An issue was discovered in ide_dma_cb() in     hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest     system can crash the QEMU process in the host system     via a special SCSI_IOCTL_SEND_COMMAND. It hits an     assertion that implies that the size of successful DMA     transfers there must be a multiple of 512 (the size of     a sector). NOTE: a member of the QEMU security team     disputes the significance of this issue because a     'privileged guest user has many ways to cause similar     DoS effect, without triggering this     assert.'(CVE-2019-20175)Race condition in the     v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka     Quick Emulator) allows local guest OS users to obtain     sensitive information from host heap memory via vectors     related to reading extended     attributes.(cve-2017-15038)Memory leak in the     megasas_handle_dcmd function in hw/scsi/megasas.c in     QEMU (aka Quick Emulator) allows local guest OS     privileged users to cause a denial of service (host     memory consumption) via MegaRAID Firmware Interface     (MFI) commands with the sglist size set to a value over     2 Gb.(cve-2017-5856)QEMU (aka Quick Emulator), when     built with the e1000e NIC emulation support, allows     local guest OS privileged users to cause a denial of     service (infinite loop) via vectors related to setting     the initial receive / transmit descriptor head     (TDH/RDH) outside the allocated descriptor     buffer.(cve-2017-9310)QEMU (aka Quick Emulator), when     built with MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support, allows local guest OS privileged     users to cause a denial of service (NULL pointer     dereference and QEMU process crash) via vectors     involving megasas command processing.(cve-2017-9503)The     dhcp_decode function in slirp/bootp.c in QEMU (aka     Quick Emulator) allows local guest OS users to cause a     denial of service (out-of-bounds read and QEMU process     crash) via a crafted DHCP options     string.(CVE-2017-11434)Memory leak in the     v9fs_list_xattr function in hw/9pfs/9p-xattr.c in QEMU     (aka Quick Emulator) allows local guest OS privileged     users to cause a denial of service (memory consumption)     via vectors involving the orig_value     variable.(CVE-2017-8086)m_cat in slirp/mbuf.c in Qemu     has a heap-based buffer overflow via incoming     fragmented datagrams.(CVE-2018-11806)In QEMU 3.1.0,     load_device_tree in device_tree.c calls the deprecated     load_image function, which has a buffer overflow     risk.(CVE-2018-20815)The pnv_lpc_do_eccb function in     hw/ppc/pnv_lpc.c in Qemu before 3.1 allows     out-of-bounds write or read access to PowerNV     memory.(cve-2018-18954)qemu_deliver_packet_iov in     net/net.c in Qemu accepts packet sizes greater than     INT_MAX, which allows attackers to cause a denial of     service or possibly have unspecified other     impact.(CVE-2018-17963)Qemu has a Buffer Overflow in     pcnet_receive in hw/net/pcnet.c because an incorrect     integer data type is used.(CVE-2018-17962)Qemu has a     Buffer Overflow in rtl8139_do_receive in     hw/net/rtl8139.c because an incorrect integer data type     is used.(CVE-2018-17958)qemu-seccomp.c in QEMU might     allow local OS guest users to cause a denial of service     (guest crash) by leveraging mishandling of the seccomp     policy for threads other than the main     thread.(CVE-2018-15746)In QEMU 1:4.1-1,     1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8,     1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and     1:2.1+dfsg-12+deb8u12 (fixed), when executing script in     lsi_execute_script(), the LSI scsi adapter emulator     advances 's->dsp' index to read next opcode. This can     lead to an infinite loop if the next opcode is empty.
    Move the existing loop exit after 10k iterations so     that it covers no-op opcodes as     well.(CVE-2019-12068)qemu-bridge-helper.c in QEMU 4.0.0     does not ensure that a network interface name (obtained     from bridge.conf or a --br=bridge option) is limited to     the IFNAMSIZ size, which can lead to an ACL     bypass.(CVE-2019-13164)tcp_emu in slirp/tcp_subr.c (aka     slirp/src/tcp_subr.c) in QEMU 3.0.0 uses uninitialized     data in an snprintf call, leading to Information     disclosure.(CVE-2019-9824)interface_release_resource in     hw/display/qxl.c in QEMU 4.0.0 has a NULL pointer     dereference.(CVE-2019-12155)The Virtio Vring     implementation in QEMU allows local OS guest users to     cause a denial of service (divide-by-zero error and     QEMU process crash) by unsetting vring alignment while     updating Virtio     rings.(CVE-2017-17381)hw/display/cirrus_vga_rop.h in     QEMU (aka Quick Emulator) allows local guest OS     privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and     cirrus_bitblt_rop_fwd_ functions.(CVE-2017-7718)Memory     leak in the serial_exit_core function in     hw/char/serial.c in QEMU (aka Quick Emulator) allows     local guest OS privileged users to cause a denial of     service (host memory consumption and QEMU process     crash) via a large number of device unplug     operations.(CVE-2017-5579)Quick Emulator (aka QEMU),     when built with the Cirrus CLGD 54xx VGA Emulator     support, allows local guest OS privileged users to     cause a denial of service (out-of-bounds access and     QEMU process crash) by leveraging incorrect region     calculation when updating VGA     display.(CVE-2018-7858)qemu-nbd in QEMU (aka Quick     Emulator) does not ignore SIGPIPE, which allows remote     attackers to cause a denial of service (daemon crash)     by disconnecting during a server-to-client reply     attempt.(CVE-2017-10664)QEMU (aka Quick Emulator), when     built with the VGA display emulator support, allows     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update.(CVE-2017-13672)QEMU     (aka Quick Emulator), when built with the IDE disk and     CD/DVD-ROM Emulator support, allows local guest OS     privileged users to cause a denial of service (NULL     pointer dereference and QEMU process crash) by flushing     an empty CDROM device drive.(CVE-2017-12809)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities were found in qemu, a fast processor emulator :

CVE-2015-8666

Heap-based buffer overflow in QEMU when built with the Q35-chipset-based PC system emulator

CVE-2016-2198

NULL pointer dereference in ehci_caps_write in the USB EHCI support that may result in denial of service

CVE-2016-6833

Use after free while writing in the vmxnet3 device that could be used to cause a denial of service

CVE-2016-6835

Buffer overflow in vmxnet_tx_pkt_parse_headers() in vmxnet3 device that could result in denial of service

CVE-2016-8576

Infinite loop vulnerability in xhci_ring_fetch in the USB xHCI support

CVE-2016-8667 / CVE-2016-8669

Divide by zero errors in set_next_tick in the JAZZ RC4030 chipset emulator, and in serial_update_parameters of some serial devices, that could result in denial of service

CVE-2016-9602

Improper link following with VirtFS

CVE-2016-9603

Heap buffer overflow via vnc connection in the Cirrus CLGD 54xx VGA emulator support

CVE-2016-9776

Infinite loop while receiving data in the ColdFire Fast Ethernet Controller emulator

CVE-2016-9907

Memory leakage in the USB redirector usb-guest support 

CVE-2016-9911

Memory leakage in ehci_init_transfer in the USB EHCI support

CVE-2016-9914 / CVE-2016-9915 / CVE-2016-9916

Plan 9 File System (9pfs): add missing cleanup operation in FileOperations, in the handle backend and in the proxy backend driver

CVE-2016-9921 / CVE-2016-9922

Divide by zero in cirrus_do_copy in the Cirrus CLGD 54xx VGA Emulator support 

CVE-2016-10155

Memory leak in hw/watchdog/wdt_i6300esb.c allowing local guest OS privileged users to cause a denial of service via a large number of device unplug operations.

CVE-2017-2615 / CVE-2017-2620 / CVE-2017-18030 / CVE-2018-5683 / CVE-2017-7718

Out-of-bounds access issues in the Cirrus CLGD 54xx VGA emulator support, that could result in denial of service

CVE-2017-5525 / CVE-2017-5526

Memory leakage issues in the ac97 and es1370 device emulation

CVE-2017-5579

Most memory leakage in the 16550A UART emulation

CVE-2017-5667

Out-of-bounds access during multi block SDMA transfer in the SDHCI emulation support.

CVE-2017-5715

Mitigations against the Spectre v2 vulnerability. For more information please refer to https://www.qemu.org/2018/01/04/spectre/

CVE-2017-5856

Memory leak in the MegaRAID SAS 8708EM2 Host Bus Adapter emulation support

CVE-2017-5973 / CVE-2017-5987 / CVE-2017-6505

Infinite loop issues in the USB xHCI, in the transfer mode register of the SDHCI protocol, and the USB ohci_service_ed_list

CVE-2017-7377

9pfs: host memory leakage via v9fs_create

CVE-2017-7493

Improper access control issues in the host directory sharing via 9pfs support.

CVE-2017-7980

Heap-based buffer overflow in the Cirrus VGA device that could allow local guest OS users to execute arbitrary code or cause a denial of service

CVE-2017-8086

9pfs: host memory leakage via v9pfs_list_xattr

CVE-2017-8112

Infinite loop in the VMWare PVSCSI emulation

CVE-2017-8309 / CVE-2017-8379

Host memory leakage issues via the audio capture buffer and the keyboard input event handlers 

CVE-2017-9330

Infinite loop due to incorrect return value in USB OHCI that may result in denial of service

CVE-2017-9373 / CVE-2017-9374

Host memory leakage during hot unplug in IDE AHCI and USB emulated devices that could result in denial of service

CVE-2017-9503

NULL pointer dereference while processing megasas command

CVE-2017-10806

Stack buffer overflow in USB redirector

CVE-2017-10911

Xen disk may leak stack data via response ring

CVE-2017-11434

Out-of-bounds read while parsing Slirp/DHCP options

CVE-2017-14167

Out-of-bounds access while processing multiboot headers that could result in the execution of arbitrary code

CVE-2017-15038

9pfs: information disclosure when reading extended attributes

CVE-2017-15289

Out-of-bounds write access issue in the Cirrus graphic adaptor that could result in denial of service

CVE-2017-16845

Information leak in the PS/2 mouse and keyboard emulation support that could be exploited during instance migration 

CVE-2017-18043

Integer overflow in the macro ROUND_UP (n, d) that could result in denial of service

CVE-2018-7550

Incorrect handling of memory during multiboot that could may result in execution of arbitrary code

For Debian 8 'Jessie', these problems have been fixed in version 1:2.1+dfsg-12+deb8u7.

We recommend that you upgrade your qemu packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities were discovered in qemu, a fast processor emulator.

  - CVE-2017-15038     Tuomas Tynkkynen discovered an information leak in 9pfs.

  - CVE-2017-15119     Eric Blake discovered that the NBD server insufficiently     restricts large option requests, resulting in denial of     service.

  - CVE-2017-15124     Daniel Berrange discovered that the integrated VNC     server insufficiently restricted memory allocation,     which could result in denial of service.

  - CVE-2017-15268     A memory leak in websockets support may result in denial     of service.

  - CVE-2017-15289     Guoxiang Niu discovered an OOB write in the emulated     Cirrus graphics adaptor which could result in denial of     service.

  - CVE-2017-16845     Cyrille Chatras discovered an information leak in PS/2     mouse and keyboard emulation which could be exploited     during instance migration.

  - CVE-2017-17381     Dengzhan Heyuandong Bijunhua and Liweichao discovered     that an implementation error in the virtio vring     implementation could result in denial of service.

  - CVE-2017-18043     Eric Blake discovered an integer overflow in an     internally used macro which could result in denial of     service.

  - CVE-2018-5683     Jiang Xin and Lin ZheCheng discovered an OOB memory     access in the emulated VGA adaptor which could result in     denial of service.

  - CVE-2018-7550     Cyrille Chatras discovered that an OOB memory write when     using multiboot could result in the execution of     arbitrary code.

This update also backports a number of mitigations against the Spectre v2 vulnerability affecting modern CPUs (CVE-2017-5715 ). For additional information please refer to https://www.qemu.org/2018/01/04/spectre/

USN-3575-1 fixed vulnerabilities in QEMU. The fix for CVE-2017-11334 caused a regression in Xen environments. This update removes the problematic fix pending further investigation.

We apologize for the inconvenience.

Original advisory details :

It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11334) David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-13672) Thomas Garnier discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-14167) Tuomas Tynkkynen discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker could use this issue to obtain sensitive information from host memory. (CVE-2017-15038) Eric Blake discovered that QEMU incorrectly handled memory in the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10.
(CVE-2017-15118) Eric Blake discovered that QEMU incorrectly handled certain options to the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2017-15119) Daniel Berrange discovered that QEMU incorrectly handled the VNC server. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-15124) Carl Brassey discovered that QEMU incorrectly handled certain websockets. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue only affected Ubuntu 17.10.
(CVE-2017-15268) Guoxiang Niu discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-15289) Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-16845) It was discovered that QEMU incorrectly handled the Virtio Vring implementation. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-17381) Eric Blake discovered that QEMU incorrectly handled certain rounding operations. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-18043) Jiang Xin and Lin ZheCheng discovered that QEMU incorrectly handled the VGA device.
A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-5683).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11334)

David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-13672)

Thomas Garnier discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-14167)

Tuomas Tynkkynen discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker could use this issue to obtain sensitive information from host memory. (CVE-2017-15038)

Eric Blake discovered that QEMU incorrectly handled memory in the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15118)

Eric Blake discovered that QEMU incorrectly handled certain options to the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15119)

Daniel Berrange discovered that QEMU incorrectly handled the VNC server. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-15124)

Carl Brassey discovered that QEMU incorrectly handled certain websockets. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15268)

Guoxiang Niu discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2017-15289)

Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-16845)

It was discovered that QEMU incorrectly handled the Virtio Vring implementation. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-17381)

Eric Blake discovered that QEMU incorrectly handled certain rounding operations. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-18043)

Jiang Xin and Lin ZheCheng discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2018-5683).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- Fix ppc64 KVM failure (bz #1501936)

  - CVE-2017-15038: 9p: information disclosure when reading     extended attributes (bz #1499111)

  - CVE-2017-15268: potential memory exhaustion via websock     connection to VNC (bz #1496882)

----

qemu-pr-helper didn't work due to a change in the libmultipath/libmpathpersist APIs exposed by device-mapper-multipath-devel. This has been fixed now. Other small changes to the qemu-pr-helper service are included.

----

Backport qemu-pr-helper from QEMU 2.11. This daemon allows unprivileged users (who have access to the daemon) to use persistent reservation commands on both regular disks and multipath block devices.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for kvm fixes several issues. These security issues were fixed :

  - CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the     bitblit copy routine cirrus_bitblt_cputovideo failed to     check the memory region, allowing for an out-of-bounds     write that allows for privilege escalation (bsc#1024972)

  - CVE-2017-2615: An error in the bitblt copy operation     could have allowed a malicious guest administrator to     cause an out of bounds memory access, possibly leading     to information disclosure or privilege escalation     (bsc#1023004)

  - CVE-2016-9776: The ColdFire Fast Ethernet Controller     emulator support was vulnerable to an infinite loop     issue while receiving packets in 'mcf_fec_receive'. A     privileged user/process inside guest could have used     this issue to crash the Qemu process on the host leading     to DoS (bsc#1013285)

  - CVE-2016-9911: The USB EHCI Emulation support was     vulnerable to a memory leakage issue while processing     packet data in 'ehci_init_transfer'. A guest     user/process could have used this issue to leak host     memory, resulting in DoS for the host (bsc#1014111)

  - CVE-2016-9907: The USB redirector usb-guest support was     vulnerable to a memory leakage flaw when destroying the     USB redirector in 'usbredir_handle_destroy'. A guest     user/process could have used this issue to leak host     memory, resulting in DoS for a host (bsc#1014109)

  - CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support     was vulnerable to a divide by zero issue while copying     VGA data. A privileged user inside guest could have used     this flaw to crash the process instance on the host,     resulting in DoS (bsc#1014702)

  - CVE-2016-9922: The Cirrus CLGD 54xx VGA Emulator support     was vulnerable to a divide by zero issue while copying     VGA data. A privileged user inside guest could have used     this flaw to crash the process instance on the host,     resulting in DoS (bsc#1014702)

  - CVE-2017-5898: The CCID Card device emulator support was     vulnerable to an integer overflow allowing a privileged     user inside the guest to crash the Qemu process     resulting in DoS (bnc#1023907)

  - CVE-2016-10155: The virtual hardware watchdog     'wdt_i6300esb' was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021129)

  - CVE-2017-5856: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a memory leakage     issue allowing a privileged user to leak host memory     resulting in DoS (bsc#1023053)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-2633: The VNC display driver support was     vulnerable to an out-of-bounds memory access issue. A     user/process inside guest could use this flaw to cause     DoS (bsc#1026612)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2016-6834: A infinite loop during packet     fragmentation in the VMWARE VMXNET3 NIC device support     allowed privileged user inside guest to crash the Qemu     instance resulting in DoS (bsc#994418)

  - CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC     device support, causing an OOB read access (bsc#994605)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for kvm fixes several issues. These security issues were fixed :

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674).

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902).

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334).

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585).

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069).

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122).

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - Privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378).

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724).

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9374: Missing free of 's->ipacket', causes a     host memory leak, allowing for DoS (bsc#1043073)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-8379: Memory leak in the keyboard input event     handlers support allowed local guest OS privileged users     to cause a denial of service (host memory consumption)     by rapidly generating large keyboard events     (bsc#1037334)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-8380: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to an out-of-bounds     read access issue which allowed a privileged user inside     guest to read host memory resulting in DoS (bsc#1037336)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC     device support, causing an OOB read access (bsc#994605)

  - CVE-2016-6834: A infinite loop during packet     fragmentation in the VMWARE VMXNET3 NIC device support     allowed privileged user inside guest to crash the Qemu     instance resulting in DoS (bsc#994418)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- Fix usb3 drive issues with windows guests (bz #1493196)

  - CVE-2017-15038: 9p: information disclosure when reading     extended attributes (bz #1499111)

  - CVE-2017-15268: potential memory exhaustion via websock     connection to VNC (bz #1496882)

  - CVE-2017-14167: multiboot OOB access while loading     kernel image (bz #1489376)

  - CVE-2017-13672: vga: OOB read access during display     update (bz #1486561)

  - CVE-2017-12809: flushing of empty CDROM drives leads to     NULL deref (bz #1483536)

  - CVE-2017-11434 slirp: out-of-bounds read while parsing     dhcp options (bz #1472612)

  - Fix sending multimedia keys through spice (bz #1471758)

  - Another ppc64le binfmt fix (bz #1500526)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-15268: Qemu allowed remote attackers to cause a     memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c     (bsc#1062942).

  - CVE-2017-9524: The qemu-nbd server when built with the     Network Block Device (NBD) Server support allowed remote     attackers to cause a denial of service (segmentation     fault and server crash) by leveraging failure to ensure     that all initialization occurs talking to a client in     the nbd_negotiate function (bsc#1043808).

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378)

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes several issues.

These security issues were fixed :

  - CVE-2017-15268: Qemu allowed remote attackers to cause a     memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c     (bsc#1062942).

  - CVE-2017-9524: The qemu-nbd server when built with the     Network Block Device (NBD) Server support allowed remote     attackers to cause a denial of service (segmentation     fault and server crash) by leveraging failure to ensure     that all initialization occurs talking to a client in     the nbd_negotiate function (bsc#1043808).

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378)

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

These non-security issues were fixed :

  - Fixed not being able to build from rpm sources due to     undefined macro (bsc#1057966)

  - Fixed wrong permissions for kvm_stat.1 file

  - Fixed KVM lun resize not working as expected on SLES12     SP2 HV (bsc#1043176)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

This update for qemu to version 2.9.1 fixes several issues.

It also announces that the qed storage format will be no longer supported in Leap 15.0.

These security issues were fixed :

  - CVE-2017-15268: Qemu allowed remote attackers to cause a     memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c     (bsc#1062942)

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378)

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-13711: Use-after-free vulnerability allowed     attackers to cause a denial of service (QEMU instance     crash) by leveraging failure to properly clear ifq_so     from pending packets (bsc#1056291).

These non-security issues were fixed :

  - Fixed not being able to build from rpm sources due to     undefined macro (bsc#1057966)

  - Fiedx package build failure against new glibc     (bsc#1055587)

This update was imported from the SUSE:SLE-12-SP3:Update update project.

This update for qemu to version 2.9.1 fixes several issues. It also announces that the qed storage format will be no longer supported in SLE 15 (fate#324200). These security issues were fixed :

  - CVE-2017-15268: Qemu allowed remote attackers to cause a     memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c     (bsc#1062942)

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378)

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-13711: Use-after-free vulnerability allowed     attackers to cause a denial of service (QEMU instance     crash) by leveraging failure to properly clear ifq_so     from pending packets (bsc#1056291).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities were discovered in qemu, a fast processor emulator. The Common Vulnerabilities and Exposures project identifies the following problems :

CVE-2017-14167

Incorrect validation of multiboot headers could result in the execution of arbitrary code.

CVE-2017-15038

When using 9pfs qemu-kvm is vulnerable to an information disclosure issue. It could occur while accessing extended attributes of a file due to a race condition. This could be used to disclose heap memory contents of the host.

For Debian 7 'Wheezy', these problems have been fixed in version 1.1.2+dfsg-6+deb7u24.

We recommend that you upgrade your qemu packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities were discovered in qemu-kvm, a full virtualization solution for Linux hosts on x86 hardware with x86 guests based on the Quick Emulator(Qemu).

CVE-2017-14167

Incorrect validation of multiboot headers could result in the execution of arbitrary code.

CVE-2017-15038

When using 9pfs qemu-kvm is vulnerable to an information disclosure issue. It could occur while accessing extended attributes of a file due to a race condition. This could be used to disclose heap memory contents of the host.

For Debian 7 'Wheezy', these problems have been fixed in version 1.1.2+dfsg-6+deb7u24.

We recommend that you upgrade your qemu-kvm packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
180858	Oracle Linux 7 : qemu (ELSA-2018-4289)	Nessus	Oracle Linux Local Security Checks	critical
180778	Oracle Linux 7 : qemu (ELSA-2018-4285)	Nessus	Oracle Linux Local Security Checks	critical
180740	Oracle Linux 7 : qemu (ELSA-2019-4585)	Nessus	Oracle Linux Local Security Checks	critical
136276	EulerOS Virtualization for ARM 64 3.0.2.0 : qemu-kvm (EulerOS-SA-2020-1573)	Nessus	Huawei Local Security Checks	critical
117351	Debian DLA-1497-1 : qemu security update (Spectre)	Nessus	Debian Local Security Checks	critical
110208	Debian DSA-4213-1 : qemu - security update (Spectre)	Nessus	Debian Local Security Checks	critical
107145	Ubuntu 14.04 LTS / 16.04 LTS : QEMU regression (USN-3575-2)	Nessus	Ubuntu Local Security Checks	critical
106927	Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3575-1)	Nessus	Ubuntu Local Security Checks	critical
105928	Fedora 27 : 2:qemu (2017-8db9c497f9)	Nessus	Fedora Local Security Checks	high
104780	SUSE SLES11 Security Update : kvm (SUSE-SU-2017:3084-1)	Nessus	SuSE Local Security Checks	critical
104495	SUSE SLES12 Security Update : qemu (SUSE-SU-2017:2969-1)	Nessus	SuSE Local Security Checks	critical
104494	SUSE SLES11 Security Update : kvm (SUSE-SU-2017:2963-1)	Nessus	SuSE Local Security Checks	critical
104471	SUSE SLES12 Security Update : qemu (SUSE-SU-2017:2946-1)	Nessus	SuSE Local Security Checks	critical
104446	Fedora 26 : 2:qemu (2017-9149114fba)	Nessus	Fedora Local Security Checks	high
104429	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:2936-1)	Nessus	SuSE Local Security Checks	high
104424	openSUSE Security Update : qemu (openSUSE-2017-1249)	Nessus	SuSE Local Security Checks	high
104423	openSUSE Security Update : qemu (openSUSE-2017-1248)	Nessus	SuSE Local Security Checks	high
104376	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:2924-1)	Nessus	SuSE Local Security Checks	high
103714	Debian DLA-1129-1 : qemu security update	Nessus	Debian Local Security Checks	high
103713	Debian DLA-1128-1 : qemu-kvm security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2017-15038

medium

Tenable Plugins

critical

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