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Gentoo: 201412-06 Standard: Libxml2 Denial of Service Threat Notice

gentoo
Calendar Grey December 10, 2014
Scroller Gentoo
An important security notice from Gentoo highlights a critical Denial of Service flaw in libxml2 that necessitates an urgent update for safeguarding systems.
A vulnerability in libxml2 could result in Denial of Service.

Summary

parser.c in libxml2 before 2.9.2 does not properly prevent entity expansion even when entity substitution has been disabled.

Topics%20covered

Topics Covered

security advisory denial of service gentoo libxml2 normal severity

Resolution

All libxml2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.2"
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-2014-3660 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3660

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201412-06
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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: December 10, 2014
Bugs: #525656
ID: 201412-06

Topics%20covered

Topics Covered

security advisory denial of service gentoo libxml2 normal severity

Synopsis

A vulnerability in libxml2 could result in Denial of Service.

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 < 2.9.2 >= 2.9.2

Impact

===== A context-dependent attacker could entice a user to a specially crafted XML file using an application linked against libxml2, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.