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FreeBSD: VID-3C7BA82A-D3FB-11EA-9ABA-0C9D925BBBC0 (CVE-2020-14347): xorg-server -- Pixel Data Uninitialized Memory Information Disclosure

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FreeBSD: VID-3C7BA82A-D3FB-11EA-9ABA-0C9D925BBBC0 (CVE-2020-14347): xorg-server -- Pixel Data Uninitialized Memory Information Disclosure

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
07/31/2020
Created
08/05/2020
Added
08/02/2020
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-3C7BA82A-D3FB-11EA-9ABA-0C9D925BBBC0:

The X.org project reports:

Allocation for pixmap data in AllocatePixmap() does not initialize

the memory in xserver, it leads to leak uninitialize heap memory to

clients. When the X server runs with elevated privileges.

This flaw can lead to ASLR bypass, which when combined with other

flaws (known/unknown) could lead to lead to privilege elevation in

the client.

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-2020-14347

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