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FreeBSD: VID-FFA15B3B-E6F6-11EA-8CBF-54E1AD3D6335 (CVE-2020-14361): xorg-server -- Multiple input validation failures in X server extensions

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FreeBSD: VID-FFA15B3B-E6F6-11EA-8CBF-54E1AD3D6335 (CVE-2020-14361): xorg-server -- Multiple input validation failures in X server extensions

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
08/25/2020
Created
08/28/2020
Added
08/26/2020
Modified
10/20/2020

Description

Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.

From VID-FFA15B3B-E6F6-11EA-8CBF-54E1AD3D6335:

The X.org project reports:

All theses issuses can lead to local privileges elevation on

systems where the X server is running privileged.

The handler for the XkbSetNames request does not validate the

request length before accessing its contents.

An integer underflow exists in the handler for the

XIChangeHierarchy request.

An integer underflow exist in the handler for the XkbSelectEvents

request.

An integer underflow exist in the handler for the CreateRegister

request of the X record extension.

Solution(s)

  • freebsd-upgrade-package-xephyr
  • freebsd-upgrade-package-xorg-dmx
  • freebsd-upgrade-package-xorg-nestserver
  • freebsd-upgrade-package-xorg-server
  • freebsd-upgrade-package-xorg-vfbserver
  • freebsd-upgrade-package-xwayland

References

  • CVE-2020-14361

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