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FreeBSD: VID-96D84238-B500-490B-B6AA-2B77090A0410 (CVE-2023-1393): xorg-server -- Overlay Window Use-After-Free

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FreeBSD: VID-96D84238-B500-490B-B6AA-2B77090A0410 (CVE-2023-1393): xorg-server -- Overlay Window Use-After-Free

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/29/2023
Created
04/04/2023
Added
03/31/2023
Modified
04/10/2023

Description

A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.

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-2023-1393

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