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Gentoo Linux Security Advisory GLSA 200409-34
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http://security.gentoo.org/
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Severity: Normal
Title: X.org, XFree86: Integer and stack overflows in libXpm
Date: September 27, 2004
Bugs: #64152
ID: 200409-34
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Synopsis
========
libXpm, the X Pixmap library that is a part of the X Window System,
contains multiple stack and integer overflows that may allow a
carefully-crafted XPM file to crash applications linked against
libXpm, potentially allowing the execution of arbitrary code.
Background
==========
XFree86 and X.org are both implementations of the X Window System.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-base/xorg-x11 < 6.7.0-r2 *>= 6.7.0-r2
== 6.8.0 >= 6.8.0-r1
2 x11-base/xfree < 4.3.0-r7 >= 4.3.0-r7
-------------------------------------------------------------------
# Package 2 [x11-base/xfree] only applies to ALPHA and x86 users.
NOTE: Any packages listed without architecture tags apply to all
architectures...
-------------------------------------------------------------------
NOTE: Usage of XFree86 is deprecated on the AMD64, HPPA, IA64,
MIPS, PPC and SPARC architectures: XFree86 users on those
architectures should switch to X.org rather than upgrading
XFree86.
-------------------------------------------------------------------
2 affected packages
-------------------------------------------------------------------
Description
===========
Chris Evans has discovered multiple integer and stack overflow
vulnerabilities in the X Pixmap library, libXpm, which is a part of the
X Window System. These overflows can be exploited by the execution of a
malicious XPM file, which can crash applications that are dependent on
libXpm.
Impact
======
A carefully-crafted XPM file could crash applications that are linked
against libXpm, potentially allowing the execution of arbitrary code
with the privileges of the user running the application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All X.org users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=x11-base/xorg-x11-6.7.0-r2"
# emerge ">=x11-base/xorg-x11-6.7.0-r2"
All XFree86 users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=x11-base/xfree-4.3.0-r7"
# emerge ">=x11-base/xfree-4.3.0-r7"
Note: Usage of XFree86 is deprecated on the AMD64, HPPA, IA64, MIPS,
PPC and SPARC architectures: XFree86 users on those architectures
should switch to X.org rather than upgrading XFree86.
References
==========
[ 1 ] X.org Security Advisory
http://freedesktop.org/pipermail/xorg/2004-September/003196.html
[ 2 ] X11R6.8.1 Release Notes
http://freedesktop.org/pipermail/xorg/2004-September/003172.html
[ 3 ] CAN-2004-0687
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0687
[ 4 ] CAN-2004-0688
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0688
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200409-34.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/1.0
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