USN-4191-1: QEMU vulnerabilities
qemu vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
Several security issues were fixed in QEMU.
Software Description
- qemu - Machine emulator and virtualizer
Details
It was discovered that the LSI SCSI adapter emulator implementation in QEMU did not properly validate executed scripts. A local attacker could use this to cause a denial of service. (CVE-2019-12068)
Sergej Schumilo, Cornelius Aschermann and Simon Wörner discovered that the qxl paravirtual graphics driver implementation in QEMU contained a null pointer dereference. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-12155)
Riccardo Schirone discovered that the QEMU bridge helper did not properly validate network interface names. A local attacker could possibly use this to bypass ACL restrictions. (CVE-2019-13164)
It was discovered that a heap-based buffer overflow existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service or possibly execute arbitrary code in the host. (CVE-2019-14378)
It was discovered that a use-after-free vulnerability existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-15890)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- qemu - 1:4.0+dfsg-0ubuntu9.1
- qemu-kvm - 1:4.0+dfsg-0ubuntu9.1
- qemu-system-common - 1:4.0+dfsg-0ubuntu9.1
- qemu-system-gui - 1:4.0+dfsg-0ubuntu9.1
- qemu-system-x86 - 1:4.0+dfsg-0ubuntu9.1
- qemu-user-static - 1:4.0+dfsg-0ubuntu9.1
- qemu-utils - 1:4.0+dfsg-0ubuntu9.1
- Ubuntu 19.04
- qemu - 1:3.1+dfsg-2ubuntu3.6
- qemu-kvm - 1:3.1+dfsg-2ubuntu3.6
- qemu-system-common - 1:3.1+dfsg-2ubuntu3.6
- qemu-system-gui - 1:3.1+dfsg-2ubuntu3.6
- qemu-system-x86 - 1:3.1+dfsg-2ubuntu3.6
- qemu-user-static - 1:3.1+dfsg-2ubuntu3.6
- qemu-utils - 1:3.1+dfsg-2ubuntu3.6
- Ubuntu 18.04 LTS
- qemu - 1:2.11+dfsg-1ubuntu7.20
- qemu-kvm - 1:2.11+dfsg-1ubuntu7.20
- qemu-system-common - 1:2.11+dfsg-1ubuntu7.20
- qemu-system-x86 - 1:2.11+dfsg-1ubuntu7.20
- qemu-user-static - 1:2.11+dfsg-1ubuntu7.20
- qemu-utils - 1:2.11+dfsg-1ubuntu7.20
- Ubuntu 16.04 LTS
- qemu - 1:2.5+dfsg-5ubuntu10.42
- qemu-kvm - 1:2.5+dfsg-5ubuntu10.42
- qemu-system-common - 1:2.5+dfsg-5ubuntu10.42
- qemu-system-x86 - 1:2.5+dfsg-5ubuntu10.42
- qemu-user-static - 1:2.5+dfsg-5ubuntu10.42
- qemu-utils - 1:2.5+dfsg-5ubuntu10.42
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
from Ubuntu Security Notices https://ift.tt/2KkYG8X