SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:1774-1)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote SUSE host is missing one or more security updates.

Description :

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

- 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-2017-7493: 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-2017-7377: 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-2017-5973: 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 in
hw/usb/hcd-ohci.c 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-2017-8380: 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-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-2017-7471: 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).

- Fix privilege escalation in TCG mode of QEMU. This is
not considered a security issue by the upstream project,
but is included as additional hardening (bsc#1030624)

- Fix potential DoS in virtfs

- CVE-2016-10028: The Virtio GPU Device emulator support
was vulnerable to an out of bounds memory access issue
allowing a guest user to crash the Qemu process instance
on a host, resulting in DoS (bsc#1017084, bsc#1016503)

- CVE-2016-10029: The Virtio GPU Device emulator support
was vulnerable to an OOB read issue allowing a guest
user to crash the Qemu process instance resulting in Dos
(bsc#1017081, bsc#1016504)

- 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). This non-security issue was fixed :

- Enable MONITOR/MWAIT support for guests (bsc#1031142)

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.

See also :

https://bugzilla.suse.com/1016503
https://bugzilla.suse.com/1016504
https://bugzilla.suse.com/1017081
https://bugzilla.suse.com/1017084
https://bugzilla.suse.com/1020427
https://bugzilla.suse.com/1021741
https://bugzilla.suse.com/1025109
https://bugzilla.suse.com/1025311
https://bugzilla.suse.com/1028184
https://bugzilla.suse.com/1028656
https://bugzilla.suse.com/1030624
https://bugzilla.suse.com/1031142
https://bugzilla.suse.com/1032075
https://bugzilla.suse.com/1034866
https://bugzilla.suse.com/1034908
https://bugzilla.suse.com/1035406
https://bugzilla.suse.com/1035950
https://bugzilla.suse.com/1036211
https://bugzilla.suse.com/1037242
https://bugzilla.suse.com/1037334
https://bugzilla.suse.com/1037336
https://bugzilla.suse.com/1039495
https://bugzilla.suse.com/1042159
https://bugzilla.suse.com/1042800
https://bugzilla.suse.com/1042801
https://bugzilla.suse.com/1043073
https://bugzilla.suse.com/1043296
https://www.suse.com/security/cve/CVE-2016-10028.html
https://www.suse.com/security/cve/CVE-2016-10029.html
https://www.suse.com/security/cve/CVE-2016-9602.html
https://www.suse.com/security/cve/CVE-2016-9603.html
https://www.suse.com/security/cve/CVE-2017-5579.html
https://www.suse.com/security/cve/CVE-2017-5973.html
https://www.suse.com/security/cve/CVE-2017-5987.html
https://www.suse.com/security/cve/CVE-2017-6505.html
https://www.suse.com/security/cve/CVE-2017-7377.html
https://www.suse.com/security/cve/CVE-2017-7471.html
https://www.suse.com/security/cve/CVE-2017-7493.html
https://www.suse.com/security/cve/CVE-2017-7718.html
https://www.suse.com/security/cve/CVE-2017-7980.html
https://www.suse.com/security/cve/CVE-2017-8086.html
https://www.suse.com/security/cve/CVE-2017-8112.html
https://www.suse.com/security/cve/CVE-2017-8309.html
https://www.suse.com/security/cve/CVE-2017-8379.html
https://www.suse.com/security/cve/CVE-2017-8380.html
https://www.suse.com/security/cve/CVE-2017-9330.html
https://www.suse.com/security/cve/CVE-2017-9373.html
https://www.suse.com/security/cve/CVE-2017-9374.html
https://www.suse.com/security/cve/CVE-2017-9375.html
https://www.suse.com/security/cve/CVE-2017-9503.html
http://www.nessus.org/u?a4caa63d

Solution :

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t
patch SUSE-SLE-RPI-12-SP2-2017-1102=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2017-1102=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2017-1102=1

To bring your system up-to-date, use 'zypper patch'.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.6
(CVSS2#E:U/RL:U/RC:C)
Public Exploit Available : false