Ubuntu Security Update USN-4283-1: QEMU vulnerabilities

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qemu vulnerabilities


A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 19.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
Summary


Several security issues were fixed in QEMU.

Software Description

  • qemu - Machine emulator and virtualizer
Details


Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that QEMU incorrectly handled iSCSI server responses. A remote attacker in control of the iSCSI server could use this issue to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2020-1711)

It was discovered that the QEMU libslirp component incorrectly handled memory. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-7039, CVE-2020-8608)

Update instructions


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

Ubuntu 19.10
qemu - 1:4.0+dfsg-0ubuntu9.4
qemu-system - 1:4.0+dfsg-0ubuntu9.4
qemu-system-arm - 1:4.0+dfsg-0ubuntu9.4
qemu-system-mips - 1:4.0+dfsg-0ubuntu9.4
qemu-system-ppc - 1:4.0+dfsg-0ubuntu9.4
qemu-system-s390x - 1:4.0+dfsg-0ubuntu9.4
qemu-system-sparc - 1:4.0+dfsg-0ubuntu9.4
qemu-system-x86 - 1:4.0+dfsg-0ubuntu9.4
Ubuntu 18.04 LTS
qemu - 1:2.11+dfsg-1ubuntu7.23
qemu-system - 1:2.11+dfsg-1ubuntu7.23
qemu-system-arm - 1:2.11+dfsg-1ubuntu7.23
qemu-system-mips - 1:2.11+dfsg-1ubuntu7.23
qemu-system-ppc - 1:2.11+dfsg-1ubuntu7.23
qemu-system-s390x - 1:2.11+dfsg-1ubuntu7.23
qemu-system-sparc - 1:2.11+dfsg-1ubuntu7.23
qemu-system-x86 - 1:2.11+dfsg-1ubuntu7.23
Ubuntu 16.04 LTS
qemu - 1:2.5+dfsg-5ubuntu10.43
qemu-system - 1:2.5+dfsg-5ubuntu10.43
qemu-system-aarch64 - 1:2.5+dfsg-5ubuntu10.43
qemu-system-arm - 1:2.5+dfsg-5ubuntu10.43
qemu-system-mips - 1:2.5+dfsg-5ubuntu10.43
qemu-system-ppc - 1:2.5+dfsg-5ubuntu10.43
qemu-system-s390x - 1:2.5+dfsg-5ubuntu10.43
qemu-system-sparc - 1:2.5+dfsg-5ubuntu10.43
qemu-system-x86 - 1:2.5+dfsg-5ubuntu10.43

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


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