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[ GLSA 201412-06 ] libxml2: Denial of Service
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PostPosted: Wed Dec 10, 2014 10:26 am    Post subject: [ GLSA 201412-06 ] libxml2: Denial of Service Reply with quote

Gentoo Linux Security Advisory

Title: libxml2: Denial of Service (GLSA 201412-06)
Severity: normal
Exploitable: local, remote
Date: December 10, 2014
Bug(s): #525656
ID: 201412-06

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.

Affected Packages

Package: dev-libs/libxml2
Vulnerable: < 2.9.2
Unaffected: >= 2.9.2
Architectures: All supported architectures


Description

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


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.

Resolution

All libxml2 users should upgrade to the latest version:
Code:
# 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

CVE-2014-3660
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