[USN-4372-1] QEMU vulnerabilities

---------- Forwarded message ---------
From: Marc Deslauriers
Date: May 22, 2020 2:46AM

It was discovered that QEMU incorrectly handled bochs-display devices. A
local attacker in a guest could use this to cause a denial of service or
possibly execute arbitrary code in the host. This issue only affected
Ubuntu 19.10. (CVE-2019-15034)

It was discovered that QEMU incorrectly handled memory during certain VNC
operations. A remote attacker could possibly use this issue to cause QEMU
to consume resources, resulting in a denial of service. This issue only
affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 19.10.
(CVE-2019-20382)

It was discovered that QEMU incorrectly generated QEMU Pointer
Authentication signatures on ARM. A local attacker could possibly use this
issue to bypass PAuth. This issue only affected Ubuntu 19.10.
(CVE-2020-10702)

Ziming Zhang discovered that QEMU incorrectly handled ATI VGA emulation. A
local attacker in a guest could use this issue to cause QEMU to crash,
resulting in a denial of service. This issue only affected Ubuntu 20.04
LTS. (CVE-2020-11869)

Aviv Sasson discovered that QEMU incorrectly handled Slirp networking. A
remote attacker could use this issue to cause QEMU to crash, resulting in a
denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 19.10.
(CVE-2020-1983)

References:
  https://usn.ubuntu.com/4372-1
  CVE-2019-15034, CVE-2019-20382, CVE-2020-10702, CVE-2020-11869,
  CVE-2020-1983