qemu vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
* Ubuntu 20.04 LTS
* Ubuntu 18.04 LTS
* Ubuntu 16.04 LTS
Summary
Several security issues were fixed in QEMU.
Software Description
* 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 LTS
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 LTS
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 LTS
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
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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
--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)