USN-4283-1: QEMU vulnerabilities

Releases

• Ubuntu 19.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• 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

• 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

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

References

• CVE-2020-1711
• CVE-2020-7039
• CVE-2020-8608

Related notices

• USN-4632-1: slirp
• USN-7094-1: qemu-system-x86-microvm, qemu-system-s390x, qemu-utils, qemu-system-x86, qemu-common, qemu-system-common, qemu-system-modules-spice, qemu-user-static, qemu-system-arm, qemu-block-extra, qemu-system, qemu-system-misc, qemu-user-binfmt, qemu-system-sparc, qemu-kvm, qemu-system-gui, qemu, qemu-keymaps, qemu-system-modules-opengl, qemu-user, qemu-block-supplemental, qemu-guest-agent, qemu-system-aarch64, qemu-system-xen, qemu-system-x86-xen, qemu-system-mips, qemu-system-data, qemu-system-ppc