CVE-2016-7943

Published: 13 December 2016

The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving length fields, which trigger out-of-bounds write operations.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
libx11 Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	upstream	Released (1.6.4)
	trusty	Released (2:1.6.2-1ubuntu2.1)
	xenial	Released (2:1.6.3-1ubuntu2.1)
	yakkety	Ignored (end of life)
	zesty	Ignored (end of life)
	artful	Ignored (end of life)
	bionic	Released (2:1.6.4-1)
	Patches: upstream: https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8c29f1607a31dac0911e45a0dd3d74173822b3c9

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Bugs

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=840439

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