USN-4467-1: QEMU vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• qemu - Machine emulator and virtualizer

Details

Ziming Zhang and VictorV discovered that the QEMU SLiRP networking
implementation incorrectly handled replying to certain ICMP echo requests.
An attacker inside a guest could possibly use this issue to leak host
memory to obtain sensitive information. This issue only affected Ubuntu
18.04 LTS. (CVE-2020-10756)

Eric Blake and Xueqiang Wei discovered that the QEMU NDB implementation
incorrectly handled certain requests. A remote attacker could possibly use
this issue to cause QEMU to crash, resulting in a denial of service. This
issue only affected Ubuntu 20.04 LTS. (CVE-2020-10761)

Ziming Zhang discovered that the QEMU SM501 graphics driver incorrectly
handled certain operations. An attacker inside a guest could use this issue
to cause QEMU to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2020-12829)

It was discovered that the QEMU SD memory card implementation incorrectly
handled certain memory operations. An attacker inside a guest could
possibly use this issue to cause QEMU to crash, resulting in a denial of
service. (CVE-2020-13253)

Ren Ding and Hanqing Zhao discovered that the QEMU ES1370 audio driver
incorrectly handled certain invalid frame counts. An attacker inside a
guest could possibly use this issue to cause QEMU to crash, resulting in a
denial of service. (CVE-2020-13361)

Ren Ding and Hanqing Zhao discovered that the QEMU MegaRAID SAS SCSI driver
incorrectly handled certain memory operations. An attacker inside a guest
could possibly use this issue to cause QEMU to crash, resulting in a denial
of service. (CVE-2020-13362)

Alexander Bulekov discovered that QEMU MegaRAID SAS SCSI driver incorrectly
handled certain memory space operations. An attacker inside a guest could
possibly use this issue to cause QEMU to crash, resulting in a denial of
service. (CVE-2020-13659)

Ren Ding, Hanqing Zhao, Alexander Bulekov, and Anatoly Trosinenko
discovered that the QEMU incorrectly handled certain msi-x mmio operations.
An attacker inside a guest could possibly use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2020-13754)

It was discovered that QEMU incorrectly handled certain memory copy
operations when loading ROM contents. If a user were tricked into running
an untrusted kernel image, a remote attacker could possibly use this issue
to run arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu
18.04 LTS. (CVE-2020-13765)

Ren Ding, Hanqing Zhao, and Yi Ren discovered that the QEMU ATI video
driver incorrectly handled certain index values. An attacker inside a guest
could possibly use this issue to cause QEMU to crash, resulting in a denial
of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-13800)

Ziming Zhang discovered that the QEMU OSS audio driver incorrectly handled
certain operations. An attacker inside a guest could possibly use this
issue to cause QEMU to crash, resulting in a denial of service. This issue
only affected Ubuntu 20.04 LTS. (CVE-2020-14415)

Ziming Zhang discovered that the QEMU XGMAC Ethernet controller incorrectly
handled packet transmission. An attacker inside a guest could use this
issue to cause QEMU to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2020-15863)

Ziming Zhang discovered that the QEMU e1000e Ethernet controller
incorrectly handled packet processing. An attacker inside a guest could
possibly use this issue to cause QEMU to crash, resulting in a denial of
service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
(CVE-2020-16092)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04

• qemu - 1:4.2-3ubuntu6.4
• qemu-system - 1:4.2-3ubuntu6.4
• qemu-system-arm - 1:4.2-3ubuntu6.4
• qemu-system-mips - 1:4.2-3ubuntu6.4
• qemu-system-ppc - 1:4.2-3ubuntu6.4
• qemu-system-s390x - 1:4.2-3ubuntu6.4
• qemu-system-sparc - 1:4.2-3ubuntu6.4
• qemu-system-x86 - 1:4.2-3ubuntu6.4
• qemu-system-x86-microvm - 1:4.2-3ubuntu6.4
• qemu-system-x86-xen - 1:4.2-3ubuntu6.4

Ubuntu 18.04

• qemu - 1:2.11+dfsg-1ubuntu7.31
• qemu-system - 1:2.11+dfsg-1ubuntu7.31
• qemu-system-mips - 1:2.11+dfsg-1ubuntu7.31
• qemu-system-ppc - 1:2.11+dfsg-1ubuntu7.31
• qemu-system-s390x - 1:2.11+dfsg-1ubuntu7.31
• qemu-system-sparc - 1:2.11+dfsg-1ubuntu7.31
• qemu-system-x86 - 1:2.11+dfsg-1ubuntu7.31

Ubuntu 16.04

• qemu - 1:2.5+dfsg-5ubuntu10.45
• qemu-system - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-aarch64 - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-arm - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-mips - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-ppc - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-s390x - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-sparc - 1:2.5+dfsg-5ubuntu10.45
• qemu-system-x86 - 1:2.5+dfsg-5ubuntu10.45

After a standard system update you need to restart all QEMU virtual
machines to make all the necessary changes.

References

• CVE-2020-10756
• CVE-2020-10761
• CVE-2020-12829
• CVE-2020-13253
• CVE-2020-13361
• CVE-2020-13362
• CVE-2020-13659
• CVE-2020-13754
• CVE-2020-13765
• CVE-2020-13800
• CVE-2020-14415
• CVE-2020-15863
• CVE-2020-16092

Related notices

• USN-4437-1: libslirp0, libslirp, libslirp-dev
• USN-4467-2: qemu-user, qemu-system-x86, qemu-common, qemu-user-static, qemu-system-aarch64, qemu-system-sparc, qemu-keymaps, qemu-system, qemu-guest-agent, qemu, qemu-system-arm, qemu-system-ppc, qemu-system-misc, qemu-kvm, qemu-system-common, qemu-system-mips, qemu-utils