GLSA Advocate
Joined: 12 May 2004 Posts: 2663
|
Posted: Tue Jul 10, 2012 2:26 am Post subject: [ GLSA 201207-04 ] X.Org X Server: Privilege escalation |
|
|
Gentoo Linux Security Advisory
Title: X.Org X Server: Privilege escalation (GLSA 201207-04)
Severity: high
Exploitable: local
Date: July 09, 2012
Bug(s): #412609
ID: 201207-04
Synopsis
A format string vulnerability in X.Org X Server may allow local
privilege escalation or Denial of Service.
Background
The X Window System is a graphical windowing system based on a
client/server model.
Affected Packages
Package: x11-base/xorg-server
Vulnerable: < 1.11.4-r1
Unaffected: >= 1.11.4-r1
Unaffected: >= 1.10.6-r1 < 1.10.7
Unaffected: > 1.9.5 <= 1.9.5-r1
Architectures: All supported architectures
Description
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.
Resolution
All X.Org X Server 1.11.x users should upgrade to the latest version: Code: | # 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: Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.10.6-r1"
| X.Org X Server 1.9.x is not affected.
References
CVE-2012-2118 |
|