GLSA-201207-04 : X.Org X Server: Privilege escalation

This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201207-04
(X.Org X Server: Privilege escalation)

The 'LogVHdrMessageVerb()' function in log.c contains a format string
vulnerability.
NOTE: Exposure to this vulnerability is reduced in Gentoo due to X.Org X
Server being built with '-D_FORTIFY_SOURCE=2' by default.

Impact :

A local attacker could gain escalated privileges or cause a Denial of
Service condition.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-201207-04.xml

Solution :

All X.Org X Server 1.11.x users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.11.4-r1'
All X.Org X Server 1.10.x users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=x11-base/xorg-server-1.10.6-r1'
X.Org X Server 1.9.x is not affected.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.3
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 59896 ()

Bugtraq ID: 53150

CVE ID: CVE-2012-2118