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Gentoo: GLSA-201203-04 Normal: libxml2 Denial of Service Issue

gentoo
Calendar Grey March 6, 2012
Dist Gentoo Esm H88
libxml2 Compromise Alert for Gentoo. Immediate update suggested to avert vulnerabilities.
A hash collision vulnerability in libxml2 allows remote attackers to cause a Denial of Service condition.

Summary

libxml2 does not properly randomize hash functions to protect against hash collision attacks.

Topics%20covered

Topics Covered

security advisory denial of service gentoo libxml2 normal severity hash collision

Resolution

All libxml2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.8-r5"

References

[ 1 ] CVE-2012-0841 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0841

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201203-04
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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: libxml2: Denial of Service
Date: March 06, 2012
Bugs: #405261
ID: 201203-04

Topics%20covered

Topics Covered

security advisory denial of service gentoo libxml2 normal severity hash collision

Synopsis

A hash collision vulnerability in libxml2 allows remote attackers to cause a Denial of Service condition.

Background

libxml2 is the XML C parser and toolkit developed for the Gnome project.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libxml2 < 2.7.8-r5 >= 2.7.8-r5

Impact

===== A remote attacker could entice a user or automated system to open a specially crafted XML document with an application using libxml2 resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

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