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Alerts This Week
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Gentoo: GLSA-201409-08 Normal: libxml2 Denial of Service Issue

gentoo
Calendar Grey September 19, 2014
Scroller Gentoo
Uncover the details of a libxml2 vulnerability that empowers remote adversaries to carry out Denial of Service attacks on Gentoo platforms.
A vulnerability in libxml2 allows a remote attacker to cause Denial of Service.

Summary

A vulnerability in the xmlParserHandlePEReference() function of parser.c, when expanding entity references, can be exploited to consume large amounts of memory and cause a crash or hang.

Topics%20covered

Topics Covered

security advisory denial of service gentoo remote attack libxml2 system exploit normal severity

Resolution

All libxml2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.1-r4"

References

[ 1 ] CVE-2014-0191 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0191

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201409-08
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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: September 19, 2014
Bugs: #509834
ID: 201409-08

Topics%20covered

Topics Covered

security advisory denial of service gentoo remote attack libxml2 system exploit normal severity

Synopsis

A vulnerability in libxml2 allows a remote attacker to cause 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 < 2.9.1-r4 >= 2.9.1-r4

Impact

===== A remote attacker may be able to cause Denial of Service via a specially crafted XML file containing malicious attributes.

Workaround

There is no known workaround at this time.