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Gentoo Linux Security Advisory 201401-07

Gentoo Linux Security Advisory 201401-07
Posted Jan 10, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201401-7 - Multiple Denial of Service vulnerabilities have been found in libxslt. Versions less than 1.1.28 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2012-2870, CVE-2012-2893, CVE-2012-6139, CVE-2013-4520
SHA-256 | f23dd72c3b893d110a45c420e9dac3a0ca04e3ad16ed8dc28007045c29b7bbf2

Gentoo Linux Security Advisory 201401-07

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 201401-07
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http://security.gentoo.org/
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Severity: Normal
Title: libxslt: Denial of Service
Date: January 10, 2014
Bugs: #433603, #436284, #463236, #496114
ID: 201401-07

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Synopsis
========

Multiple Denial of Service vulnerabilities have been found in libxslt.

Background
==========

libxslt is the XSLT C library developed for the GNOME project. XSLT is
an XML language to define transformations for XML.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libxslt < 1.1.28 >= 1.1.28

Description
===========

Multiple vulnerabilities have been found in libxslt:

* Multiple errors exist in pattern.c and functions.c (CVE-2012-2870,
CVE-2012-6139).
* A double-free error exists in templates.c (CVE-2012-2893).
* A NULL pointer dereference in keys.c (CVE-2012-6139).
* An error in handling stylesheets containing DTDs (CVE-2013-4520).

Impact
======

A remote attacker could entice a user to process a specially crafted
file in an application linked against libxslt, possibly resulting in a
Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libxslt users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxslt-1.1.28"

Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these
packages.

References
==========

[ 1 ] CVE-2012-2870
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2870
[ 2 ] CVE-2012-2893
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2893
[ 3 ] CVE-2012-6139
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6139
[ 4 ] CVE-2013-4520
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4520

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201401-07.xml

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.

License
=======

Copyright 2014 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5
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