GLSA 200409-34: X.org, XFree86: Integer and stack overflows in libXpm

http://security.gentoo.org/

Severity:	normal
Title:	X.org, XFree86: Integer and stack overflows in libXpm
Date:	09/27/2004
Bugs:	#64152
ID:	200409-34

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	Architecture(s)
x11-base/xorg-x11	< 6.7.0-r2	>= 6.7.0-r2	All supported architectures
x11-base/xfree	< 4.3.0-r7	>= 4.3.0-r7	alpha, x86
x11-base/xfree	< 4.3.0-r7		amd64, hppa, ia64, mips, ppc, sparc

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

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 https://bugs.gentoo.org.