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Gentoo: GLSA-201402-03 Normal: Pixman Integer Underflow Denial of Service

gentoo
Calendar Grey February 2, 2014
Scroller Gentoo
The recent Gentoo Linux advisory GLSA 202303-01 highlights a buffer overflow vulnerability in Pixman, which could lead to possible Denial of Service (DoS) attacks.
An integer underflow vulnerability in Pixman may allow a context-dependent attacker to cause Denial of Service.

Summary

The trapezoid handling code in Pixman contains an integer underflow vulnerability.

Topics%20covered

Topics Covered

security advisory denial of service gentoo normal integer underflow pixman

Resolution

All Pixman users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=x11-libs/pixman-0.32.4"
Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying these packages.

References

[ 1 ] CVE-2013-6425 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-6425

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201402-03
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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.

Severity: Normal
Title: Pixman: User-assisted execution of arbitrary code
Date: February 02, 2014
Bugs: #493292
ID: 201402-03

Topics%20covered

Topics Covered

security advisory denial of service gentoo normal integer underflow pixman

Synopsis

An integer underflow vulnerability in Pixman may allow a context-dependent attacker to cause Denial of Service.

Background

Pixman is a pixel manipulation library.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-libs/pixman < 0.32.4 >= 0.32.4

Impact

===== A context-dependent attacker could entice a user to open a specially crafted file using an application linked against Pixman, possibly resulting in execution of arbitrary code with the privileges of the process, or a Denial of Service condition.

Workaround

There is no known workaround at this time.