| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 201207-04 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: High |
| 8 |
Title: X.Org X Server: Privilege escalation |
| 9 |
Date: July 09, 2012 |
| 10 |
Bugs: #412609 |
| 11 |
ID: 201207-04 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
A format string vulnerability in X.Org X Server may allow local |
| 19 |
privilege escalation or Denial of Service. |
| 20 |
|
| 21 |
Background |
| 22 |
========== |
| 23 |
|
| 24 |
The X Window System is a graphical windowing system based on a |
| 25 |
client/server model. |
| 26 |
|
| 27 |
Affected packages |
| 28 |
================= |
| 29 |
|
| 30 |
------------------------------------------------------------------- |
| 31 |
Package / Vulnerable / Unaffected |
| 32 |
------------------------------------------------------------------- |
| 33 |
1 x11-base/xorg-server < 1.11.4-r1 >= 1.11.4-r1 |
| 34 |
*>= 1.10.6-r1 |
| 35 |
*<= 1.9.5-r1 |
| 36 |
|
| 37 |
Description |
| 38 |
=========== |
| 39 |
|
| 40 |
The "LogVHdrMessageVerb()" function in log.c contains a format string |
| 41 |
vulnerability. |
| 42 |
|
| 43 |
NOTE: Exposure to this vulnerability is reduced in Gentoo due to X.Org |
| 44 |
X Server being built with "-D_FORTIFY_SOURCE=2" by default. |
| 45 |
|
| 46 |
Impact |
| 47 |
====== |
| 48 |
|
| 49 |
A local attacker could gain escalated privileges or cause a Denial of |
| 50 |
Service condition. |
| 51 |
|
| 52 |
Workaround |
| 53 |
========== |
| 54 |
|
| 55 |
There is no known workaround at this time. |
| 56 |
|
| 57 |
Resolution |
| 58 |
========== |
| 59 |
|
| 60 |
All X.Org X Server 1.11.x users should upgrade to the latest version: |
| 61 |
|
| 62 |
# emerge --sync |
| 63 |
# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.11.4-r1" |
| 64 |
|
| 65 |
All X.Org X Server 1.10.x users should upgrade to the latest version: |
| 66 |
|
| 67 |
# emerge --sync |
| 68 |
# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.10.6-r1" |
| 69 |
|
| 70 |
X.Org X Server 1.9.x is not affected. |
| 71 |
|
| 72 |
References |
| 73 |
========== |
| 74 |
|
| 75 |
[ 1 ] CVE-2012-2118 |
| 76 |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2118 |
| 77 |
|
| 78 |
Availability |
| 79 |
============ |
| 80 |
|
| 81 |
This GLSA and any updates to it are available for viewing at |
| 82 |
the Gentoo Security Website: |
| 83 |
|
| 84 |
http://security.gentoo.org/glsa/glsa-201207-04.xml |
| 85 |
|
| 86 |
Concerns? |
| 87 |
========= |
| 88 |
|
| 89 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 90 |
confidentiality and security of our users' machines is of utmost |
| 91 |
importance to us. Any security concerns should be addressed to |
| 92 |
security@g.o or alternatively, you may file a bug at |
| 93 |
https://bugs.gentoo.org. |
| 94 |
|
| 95 |
License |
| 96 |
======= |
| 97 |
|
| 98 |
Copyright 2012 Gentoo Foundation, Inc; referenced text |
| 99 |
belongs to its owner(s). |
| 100 |
|
| 101 |
The contents of this document are licensed under the |
| 102 |
Creative Commons - Attribution / Share Alike license. |
| 103 |
|
| 104 |
http://creativecommons.org/licenses/by-sa/2.5 |
Archives