This update for xen fixes the following issues :

Security vulnerabilities fixed :

CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040)

CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045)

CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-280) (bsc#1115047)

CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in various Bluetooth functions, allowing this to crash qemu process resulting in Denial of Service (DoS). (bsc#1117756).

CVE-2018-18849: Fixed an out of bounds memory access in the LSI53C895A SCSI host bus adapter emulation, which allowed a user and/or process to crash the qemu process resulting in a Denial of Service (DoS).
(bsc#1114423)

Other bugs fixed: Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940)

Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528)

Fixed an issue with live migrations, which used to fail when spectre is enabled on xen boot cmdline (bsc#1116380)

Upstream bug fixes (bsc#1027519)

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.

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

CVE-2018-11806

It was found that the SLiRP networking implementation could use a wrong size when reallocating its buffers, which can be exploited by a priviledged user on a guest to cause denial of service or possibly arbitrary code execution on the host system.

CVE-2018-18849

It was found that the LSI53C895A SCSI Host Bus Adapter emulation was susceptible to an out of bounds memory access, which could be leveraged by a malicious guest user to crash the QEMU process.

CVE-2018-20815

A heap buffer overflow was found in the load_device_tree function, which could be used by a malicious user to potentially execute arbitrary code with the priviledges of the QEMU process.

CVE-2019-9824

William Bowling discovered that the SLiRP networking implementation did not handle some messages properly, which could be triggered to leak memory via crafted messages.

For Debian 8 'Jessie', these problems have been fixed in version 1:2.1+dfsg-12+deb8u11.

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.

This update for qemu fixes the following issues :

Security issues fixed :

CVE-2018-10839: Fixed NE2000 NIC emulation support that 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 (bsc#1110910).

CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111006).

CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111010).

CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
(bsc#1111013)

CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114422).

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 the following issues :

Security issues fixed :

CVE-2018-10839: Fixed NE2000 NIC emulation support that 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 (bsc#1110910).

CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111006).

CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111010).

CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
(bsc#1111013)

CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114422).

Non-security issues fixed: Improving disk performance for qemu on xen (bsc#1100408)

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 xen fixes the following issues :

Security issues fixed :

  - CVE-2018-18849: Fixed an out of bounds memory access     issue was found in the LSI53C895A SCSI Host Bus Adapter     emulation while writing a message in lsi_do_msgin     (bsc#1114423).

  - CVE-2018-18883: Fixed a NULL pointer dereference that     could have been triggered by nested VT-x that where not     properly restricted (XSA-278)(bsc#1114405).

  - CVE-2018-19965: Fixed denial of service issue from     attempting to use INVPCID with a non-canonical addresses     (XSA-279)(bsc#1115045).

  - CVE-2018-19966: Fixed issue introduced by XSA-240 that     could have caused conflicts with shadow paging     (XSA-280)(bsc#1115047).

  - CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB     flushing / improper large page mappings with AMD IOMMUs     (XSA-275)(bsc#1115040).

Non-security issues fixed :

  - Added upstream bug fixes (bsc#1027519).

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

This update for qemu fixes the following issues :

Security issues fixed :

  - CVE-2018-10839: Fixed NE2000 NIC emulation support that     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     (bsc#1110910).

  - CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

  - CVE-2018-17958: Fixed a Buffer Overflow in     rtl8139_do_receive in hw/net/rtl8139.c because an     incorrect integer data type is used (bsc#1111006).

  - CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive     in hw/net/pcnet.c because an incorrect integer data type     is used (bsc#1111010).

  - CVE-2018-17963: Fixed qemu_deliver_packet_iov in     net/net.c that accepts packet sizes greater than     INT_MAX, which allows attackers to cause a denial of     service or possibly have unspecified other impact.
    (bsc#1111013)

  - CVE-2018-18849: Fixed an out of bounds memory access     issue that was found in the LSI53C895A SCSI Host Bus     Adapter emulation while writing a message in     lsi_do_msgin. It could occur during migration if the     'msg_len' field has an invalid value. A user/process     could use this flaw to crash the Qemu process resulting     in DoS (bsc#1114422).

Non-security issues fixed :

  - Improving disk performance for qemu on xen (bsc#1100408)

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

This update for xen fixes the following issues :

Security issues fixed :

CVE-2018-18849: Fixed an out of bounds memory access issue was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin (bsc#1114423).

CVE-2018-18883: Fixed a NULL pointer dereference that could have been triggered by nested VT-x that where not properly restricted (XSA-278)(bsc#1114405).

CVE-2018-19965: Fixed denial of service issue from attempting to use INVPCID with a non-canonical addresses (XSA-279)(bsc#1115045).

CVE-2018-19966: Fixed issue introduced by XSA-240 that could have caused conflicts with shadow paging (XSA-280)(bsc#1115047).

CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB flushing / improper large page mappings with AMD IOMMUs (XSA-275)(bsc#1115040).

Non-security issues fixed: Added upstream bug fixes (bsc#1027519).

Fixed XEN SLE12-SP1 domU hang on SLE12-SP3 HV (bsc#1108940).

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 the following issues :

Security issues fixed :

CVE-2018-10839: Fixed NE2000 NIC emulation support that 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 (bsc#1110910).

CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111006).

CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111010).

CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
(bsc#1111013)

CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114422).

CVE-2018-18438: Fixed integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value (bnc#1112185).

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 the following issues :

Security issues fixed :

CVE-2018-10839: Fixed NE2000 NIC emulation support that 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 (bsc#1110910).

CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

CVE-2018-16847: Fixed an OOB heap buffer r/w access issue that 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 (bsc#1114529).

CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111006).

CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111010).

CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
(bsc#1111013)

CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114422).

Non-security issues fixed: Fix slowness in arm32 emulation (bsc#1112499).

In order to improve spectre mitigation for s390x, add a new feature in the QEMU cpu model to provide the etoken cpu feature for guests (bsc#1107489).

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 the following issues :

Security issues fixed :

  - CVE-2018-10839: Fixed NE2000 NIC emulation support that     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     (bsc#1110910).

  - CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

  - CVE-2018-16847: Fixed an OOB heap buffer r/w access     issue that 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 (bsc#1114529).

  - CVE-2018-17958: Fixed a Buffer Overflow in     rtl8139_do_receive in hw/net/rtl8139.c because an     incorrect integer data type is used (bsc#1111006).

  - CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive     in hw/net/pcnet.c because an incorrect integer data type     is used (bsc#1111010).

  - CVE-2018-17963: Fixed qemu_deliver_packet_iov in     net/net.c that accepts packet sizes greater than     INT_MAX, which allows attackers to cause a denial of     service or possibly have unspecified other impact.
    (bsc#1111013)

  - CVE-2018-18849: Fixed an out of bounds memory access     issue that was found in the LSI53C895A SCSI Host Bus     Adapter emulation while writing a message in     lsi_do_msgin. It could occur during migration if the     'msg_len' field has an invalid value. A user/process     could use this flaw to crash the Qemu process resulting     in DoS (bsc#1114422).

Non-security issues fixed :

  - Fix slowness in arm32 emulation (bsc#1112499).

  - In order to improve spectre mitigation for s390x, add a     new feature in the QEMU cpu model to provide the etoken     cpu feature for guests (bsc#1107489).

This update was imported from the SUSE:SLE-15:Update update project.

This update for qemu fixes the following issues :

Security issues fixed :

CVE-2018-10839: Fixed NE2000 NIC emulation support that 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 (bsc#1110910).

CVE-2018-15746: Fixed qemu-seccomp.c that 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 (bsc#1106222).

CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111006).

CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111010).

CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
(bsc#1111013)

CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114422).

CVE-2018-16847: Fixed an out of bounds r/w buffer access in cmb operations (bsc#1114529).

Non-security issue fixed: Fixed a condition when retry logic does not have been executed in case of data transmit failure or connection hungup (bsc#1108474).

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 cpu model crash on AMD hosts (bz #1640140)

  - CVE-2018-15746: seccomp blacklist is not applied to all     threads (bz #1618357)

  - Fix assertion in address_space_stw_le_cached (bz     #1644728)

  - CVE-2018-10839: ne2000: fix possible out of bound access     (bz #1636429)

  - CVE-2018-17958: rtl8139: fix possible out of bound     access (bz #1636729)

  - CVE-2018-17962: pcnet: fix possible buffer overflow (bz     #1636775)

  - CVE-2018-17963: net: ignore packet size greater than     INT_MAX (bz #1636782)

  - CVE-2018-18849: lsi53c895a: OOB msg buffer access leads     to DoS (bz #1644977)

  - CVE-2018-18954: ppc64: Out-of-bounds r/w stack access in     pnv_lpc_do_eccb (bz #1645442)

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 xen fixes the following issues :

Update to Xen 4.11.1 bug fix release (bsc#1027519)

CVE-2018-17963: Fixed an integer overflow issue in the QEMU emulator, which could occur when a packet with large packet size is processed. A user inside a guest could have used this flaw to crash the qemu process resulting in a Denial of Service (DoS). (bsc#1111014)

CVE-2018-18849: Fixed an out of bounds memory access in the LSI53C895A SCSI host bus adapter emulation, which allowed a user and/or process to crash the qemu process resulting in a Denial of Service (DoS).
(bsc#1114423)

CVE-2018-18883: Fixed an issue related to inproper restriction of nested VT-x, which allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-278) (bsc#1114405)

CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040)

CVE-2018-19963: Fixed the allocation of pages used to communicate with external emulators, which may have cuased Xen to crash, resulting in a Denial of Service (DoS). (XSA-276) (bsc#1115043)

CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045)

CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS) (XSA-280) (bsc#1115047)

CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)

CVE-2018-19964: Fixed the incorrect error handling of p2m page removals, which allowed a guest to cause a deadlock, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-277) (bsc#1115044)

CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in various Bluetooth functions, allowing this to crash qemu process resulting in Denial of Service (DoS). (bsc#1117756).

Other bugs fixed: Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940)

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.

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled NE2000 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-10839)

It was discovered that QEMU incorrectly handled the Slirp networking back-end. A privileged attacker inside the guest 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, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-11806)

Fakhri Zulkifli discovered that the QEMU guest agent incorrectly handled certain QMP commands. An attacker could possibly use this issue to crash the QEMU guest agent, resulting in a denial of service.
(CVE-2018-12617)

Li Qiang discovered that QEMU incorrectly handled NVM Express Controller emulation. An attacker inside the guest 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 18.04 LTS and Ubuntu 18.10. (CVE-2018-16847)

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled RTL8139 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17958)

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled PCNET device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2018-17962)

Daniel Shapira discovered that QEMU incorrectly handled large packet sizes. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17963)

It was discovered that QEMU incorrectly handled LSI53C895A device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-18849)

Moguofang discovered that QEMU incorrectly handled the IPowerNV LPC controller. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-18954)

Zhibin Hu discovered that QEMU incorrectly handled the Plan 9 File System support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2018-19364).

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.

Multiple security issues were discovered in QEMU, a fast processor emulator, which could result in denial of service, the execution of arbitrary code or information disclosure.

In addition this update backports support to passthrough the new md-clear CPU flag added in the intel-microcode update shipped in DSA 4447 to x86-based guests.

This update for xen fixes the following issues :

Security vulnerabilities fixed :

CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040)

CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045)

CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS) (XSA-280) (bsc#1115047)

CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)

CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in various Bluetooth functions, allowing this to crash qemu process resulting in Denial of Service (DoS). (bsc#1117756).

CVE-2018-18849: Fixed an out of bounds memory access in the LSI53C895A SCSI host bus adapter emulation, which allowed a user and/or process to crash the qemu process resulting in a Denial of Service (DoS).
(bsc#1114423)

Fixed an integer overflow in ccid_card_vscard_read(), which allowed for memory corruption. (bsc#1112188)

CVE-2017-13672: Fixed an out of bounds read access during display update (bsc#1056336)

CVE-2018-17958: Fixed an integer overflow leading to a buffer overflow in the rtl8139 component (bsc#1111007)

CVE-2018-17962: Fixed an integer overflow leading to a buffer overflow in the pcnet component (bsc#1111011)

CVE-2018-17963: Fixed an integer overflow in relation to large packet sizes, leading to a denial of service (DoS). (bsc#1111014)

CVE-2018-10839: Fixed an integer overflow leading to a buffer overflow in the ne2000 component (bsc#1110924)

Other bugs fixed: Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940)

Upstream bug fixes (bsc#1027519)

Fixed crashing VMs when migrating between dom0 hosts (bsc#1031382)

Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528)

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 xen fixes the following issues :

Security issues fixed :

CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114423).

CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)

CVE-2018-19665: Fixed an integer overflow in Bluetooth routines allows memory corruption (bsc#1117756).

CVE-2018-18438: Fixed an integer overflow in ccid_card_vscard_read function which allows memory corruption (bsc#1112188).

CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111011).

Fixed an issue which could allow a malicious unprivileged guest userspace process to escalate its privilege to that of other userspace processes in the same guest and potentially thereby to that of the guest operating system (bsc#1126201).

CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB flushing / improper large page mappings with AMD IOMMUs (XSA-275)(bsc#1115040).

CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
(bsc#1111014)

Fixed an issue which could allow an untrusted PV domain with access to a physical device to DMA into its own pagetables leading to privilege escalation (bsc#1126195).

Fixed an issue which could allow a malicious or buggy x86 PV guest kernels can mount a Denial of Service attack affecting the whole system (bsc#1126196)

CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111007).

CVE-2018-10839: Fixed an integer overflow which could lead to a buffer overflow issue (bsc#1110924).

CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp (bsc#1123157).

CVE-2018-19966: Fixed issue introduced by XSA-240 that could have caused conflicts with shadow paging (XSA-280)(bsc#1115047).

CVE-2017-13672: Fixed an out of bounds read access during display update (bsc#1056336).

Fixed multiple access violations introduced by XENMEM_exchange hypercall which could allow a single PV guest to leak arbitrary amounts of memory, leading to a denial of service (bsc#1126192).

Fixed an issue which could allow malicious or buggy guests with passed through PCI devices to be able to escalate their privileges, crash the host, or access data belonging to other guests. Additionally memory leaks were also possible (bsc#1126140).

Fixed a race condition issue which could allow malicious PV guests to escalate their privilege to that of the hypervisor (bsc#1126141).

CVE-2019-9824: Fixed an information leak in SLiRP networking implementation which could allow a user/process to read uninitialised stack memory contents (bsc#1129623).

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 xen fixes the following issues :

Security issues fixed :

CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp (bsc#1123157).

CVE-2017-13672: Fixed an out of bounds read access during display update (bsc#1056336).

Fixed an issue which could allow malicious or buggy guests with passed through PCI devices to be able to escalate their privileges, crash the host, or access data belonging to other guests. Additionally memory leaks were also possible (bsc#1126140)

Fixed a race condition issue which could allow malicious PV guests to escalate their privilege to that of the hypervisor (bsc#1126141).

CVE-2018-18849: Fixed an out of bounds msg buffer access which could lead to denial of service (bsc#1114423).

Fixed an issue which could allow a malicious unprivileged guest userspace process to escalate its privilege to that of other userspace processes in the same guest and potentially thereby to that of the guest operating system (bsc#1126201).

CVE-2018-17958: Fixed an integer overflow leading to a buffer overflow in the rtl8139 component (bsc#1111007)

CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)

CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in various Bluetooth functions, allowing this to crash qemu process resulting in Denial of Service (DoS). (bsc#1117756).

CVE-2019-9824: Fixed an information leak in SLiRP networking implementation which could allow a user/process to read uninitialised stack memory contents (bsc#1129623).

CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040)

CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS) (XSA-280) (bsc#1115047).

CVE-2018-10839: Fixed an integer overflow leading to a buffer overflow in the ne2000 component (bsc#1110924).

CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045).

Fixed an issue which could allow malicious 64bit PV guests to cause a host crash (bsc#1127400).

Fixed an issue which could allow malicious PV guests may cause a host crash or gain access to data pertaining to other guests.Additionally, vulnerable configurations are likely to be unstable even in the absence of an attack (bsc#1126198).

Fixed multiple access violations introduced by XENMEM_exchange hypercall which could allow a single PV guest to leak arbitrary amounts of memory, leading to a denial of service (bsc#1126192).

CVE-2018-17963: Fixed an integer overflow in relation to large packet sizes, leading to a denial of service (DoS). (bsc#1111014).

Fixed an issue which could allow a malicious or buggy x86 PV guest kernels can mount a Denial of Service attack affecting the whole system (bsc#1126196).

Fixed an issue which could allow an untrusted PV domain with access to a physical device to DMA into its own pagetables leading to privilege escalation (bsc#1126195).

CVE-2018-17962: Fixed an integer overflow leading to a buffer overflow in the pcnet component (bsc#1111011)

CVE-2018-18438: Fixed an integer overflow in ccid_card_vscard_read function which could lead to memory corruption (bsc#1112188).

Other issues fixed: Upstream bug fixes (bsc#1027519)

Fixed an issue where XEN SLE12-SP1 domU hangs on SLE12-SP3 HV1108940 (bsc#1108940).

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.

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

  - Memory leak in hw/audio/es1370.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-2017-5526)

  - Memory leak in hw/audio/ac97.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-2017-5525)

  - The xhci_kick_epctx function in hw/usb/hcd-xhci.c in     QEMU (aka Quick Emulator) allows local guest OS     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors related to     control transfer descriptor sequence.(CVE-2017-5973)

  - The sdhci_sdma_transfer_multi_blocks function in     hw/sd/sdhci.c in QEMU (aka Quick Emulator) allows 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.(CVE-2017-5987)

  - 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_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-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)

  - 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)

  - 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)

  - 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)

  - 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)

  - 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 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)

  - The imx_fec_do_tx function in hw/net/imx_fec.c in QEMU     (aka Quick Emulator) does not properly limit the buffer     descriptor count when transmitting packets, which     allows local guest OS administrators to cause a denial     of service (infinite loop and QEMU process crash) via     vectors involving a buffer descriptor with a length of     0 and crafted values in bd.flags.(CVE-2016-7907)

  - 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)

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

  - TSX Asynchronous Abort condition on some CPUs utilizing     speculative execution may allow an authenticated user     to potentially enable information disclosure via a side     channel with local access.(CVE-2019-11135)

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

  - Quick Emulator(Qemu) built with the VMWARE PVSCSI     paravirtual SCSI bus emulation support is vulnerable to     an OOB r/w access issue. It could occur while     processing SCSI commands 'PVSCSI_CMD_SETUP_RINGS' or     'PVSCSI_CMD_SETUP_MSG_RING'. A privileged user inside     guest could use this flaw to crash the Qemu process     resulting in DoS.(CVE-2016-4952)

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

  - 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)

  - 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)

  - QEMU, through version 2.10 and through version 3.1.0,     is vulnerable to an out-of-bounds read of up to 128     bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A     local attacker with permission to execute i2c commands     could exploit this to read stack memory of the qemu     process on the host.(CVE-2019-3812)

  - A flaw was found in QEMU's 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)

  - ** 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)

  - Quick Emulator (QEMU) built with Network Block Device     (NBD) Server support was vulnerable to a null-pointer     dereference issue. The flaw could occur when releasing     a client that was not initialized due to failed     negotiation. A remote user or process could exploit     this flaw to crash the qemu-nbd server (denial of     service).(CVE-2017-9524)

  - Qemu has integer overflows because IOReadHandler and     its associated functions use a signed integer data type     for a size value.(CVE-2018-18438)

  - The Bluetooth subsystem in QEMU mishandles negative     values for length variables, leading to memory     corruption.(CVE-2018-19665)

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.

ID	Name	Product	Family	Published	Updated	Severity
120987	SUSE SLES12 Security Update : xen (SUSE-SU-2019:0020-1)	Nessus	SuSE Local Security Checks	2019/01/07	2020/02/26	high
124720	Debian DLA-1781-1 : qemu security update	Nessus	Debian Local Security Checks	2019/05/10	2020/01/21	high
119453	SUSE SLES12 Security Update : qemu (SUSE-SU-2018:3973-1)	Nessus	SuSE Local Security Checks	2018/12/06	2020/06/09	high
119741	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:4129-1)	Nessus	SuSE Local Security Checks	2018/12/18	2020/03/27	high
119215	SUSE SLES12 Security Update : qemu (SUSE-SU-2018:3912-1)	Nessus	SuSE Local Security Checks	2018/11/27	2020/07/01	high
119642	openSUSE Security Update : xen (openSUSE-2018-1530)	Nessus	SuSE Local Security Checks	2018/12/13	2020/06/04	high
119717	openSUSE Security Update : qemu (openSUSE-2018-1563)	Nessus	SuSE Local Security Checks	2018/12/17	2020/06/04	high
119872	SUSE SLES12 Security Update : qemu (SUSE-SU-2018:4237-1)	Nessus	SuSE Local Security Checks	2018/12/24	2020/03/25	high
119648	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:4070-1)	Nessus	SuSE Local Security Checks	2018/12/13	2020/04/28	high
119454	SUSE SLES11 Security Update : kvm (SUSE-SU-2018:3975-1)	Nessus	SuSE Local Security Checks	2018/12/06	2020/06/09	high
120171	SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2018:3927-1)	Nessus	SuSE Local Security Checks	2019/01/02	2020/03/16	high
119456	SUSE SLES11 Security Update : kvm (SUSE-SU-2018:3987-1)	Nessus	SuSE Local Security Checks	2018/12/06	2020/06/09	high
123389	openSUSE Security Update : qemu (openSUSE-2019-961)	Nessus	SuSE Local Security Checks	2019/03/27	2020/01/27	high
119491	openSUSE Security Update : qemu (openSUSE-2018-1483)	Nessus	SuSE Local Security Checks	2018/12/07	2020/06/04	high
119763	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:4185-1)	Nessus	SuSE Local Security Checks	2018/12/19	2020/03/27	high
120587	Fedora 29 : 2:qemu (2018-87f2ace20d)	Nessus	Fedora Local Security Checks	2019/01/03	2020/06/04	high
120983	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2019:0003-1)	Nessus	SuSE Local Security Checks	2019/01/07	2020/02/26	high
119216	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : qemu vulnerabilities (USN-3826-1)	Nessus	Ubuntu Local Security Checks	2018/11/27	2019/09/18	high
125609	Debian DSA-4454-1 : qemu - security update	Nessus	Debian Local Security Checks	2019/05/31	2019/06/04	high
121004	SUSE SLES11 Security Update : xen (SUSE-SU-2019:13921-1)	Nessus	SuSE Local Security Checks	2019/01/08	2020/02/26	high
123633	SUSE SLES12 Security Update : xen (SUSE-SU-2019:0825-1)	Nessus	SuSE Local Security Checks	2019/04/02	2020/01/27	high
123634	SUSE SLES12 Security Update : xen (SUSE-SU-2019:0827-1)	Nessus	SuSE Local Security Checks	2019/04/02	2020/01/27	high
138009	EulerOS Virtualization 3.0.6.0 : qemu-kvm (EulerOS-SA-2020-1790)	Nessus	Huawei Local Security Checks	2020/07/01	2020/07/06	high

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