A new security update has been released for Gentoo Linux - PEAR XML-RPC, phpxmlrpc: New PHP script injection vulnerability. Here the announcement:

Gentoo Linux Security Advisory GLSA 200508-13
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http://security.gentoo.org/
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Severity: High
Title: PEAR XML-RPC, phpxmlrpc: New PHP script injection
vulnerability
Date: August 24, 2005
Bugs: #102378, #102576
ID: 200508-13

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Synopsis
========

The PEAR XML-RPC and phpxmlrpc libraries allow remote attackers to
execute arbitrary PHP script commands.

Background
==========

The PEAR XML-RPC and phpxmlrpc libraries are both PHP implementations
of the XML-RPC protocol.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-php/PEAR-XML_RPC < 1.4.0 >= 1.4.0
2 dev-php/phpxmlrpc < 1.2-r1 >= 1.2-r1
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------

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

Stefan Esser of the Hardened-PHP Project discovered that the PEAR
XML-RPC and phpxmlrpc libraries were improperly handling XMLRPC
requests and responses with malformed nested tags.

Impact
======

A remote attacker could exploit this vulnerability to inject arbitrary
PHP script code into eval() statements by sending a specially crafted
XML document to web applications making use of these libraries.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All PEAR-XML_RPC users should upgrade to the latest available version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/PEAR-XML_RPC-1.4.0"

All phpxmlrpc users should upgrade to the latest available version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/phpxmlrpc-1.2-r1"

References
==========

[ 1 ] CAN-2005-2498
http://cve.mitre.org/cgi-bin/cvename.cgi?nameÊN-2005-2498
[ 2 ] Hardened-PHP 14/2005 Advisory
http://www.hardened-php.net/advisory_142005.66.html
[ 3 ] Hardened-PHP 15/2005 Advisory
http://www.hardened-php.net/advisory_152005.67.html

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

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

http://security.gentoo.org/glsa/glsa-200508-13.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
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0