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FreeBSD: VID-9FA7B139-C1E9-409E-BED0-006AADCF5845 (CVE-2022-4283): xorg-server -- Multiple security issues in X server extensions

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FreeBSD: VID-9FA7B139-C1E9-409E-BED0-006AADCF5845 (CVE-2022-4283): xorg-server -- Multiple security issues in X server extensions

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
12/14/2022
Created
01/17/2023
Added
01/13/2023
Modified
01/13/2023

Description

A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.

Solution(s)

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

References

  • CVE-2022-4283
  • USN-5778-1

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