GLSA 200409-34: X.org, XFree86: Integer and stack overflows
Posted on: 09/27/2004 06:35 AM

A X.org/XFRee86 security update is available for Gentoo Linux

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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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