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Gentoo Linux Security Advisory 200509-19

Gentoo Linux Security Advisory 200509-19
Posted Sep 28, 2005
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200509-19 - PHP makes use of a private copy of libpcre which is subject to an integer overflow leading to a heap overflow (see GLSA 200508-17). It also ships with an XML-RPC library affected by a script injection vulnerability (see GLSA 200508-13). Versions less than 4.4.0-r1 are affected.

tags | advisory, overflow, php
systems | linux, gentoo
advisories | CVE-2005-2491, CVE-2005-2498
SHA-256 | c7a1f559573619bdacd54a3d4bece4a1a706e5cf86234d5dbd089768b44b19a0

Gentoo Linux Security Advisory 200509-19

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Gentoo Linux Security Advisory GLSA 200509-19
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http://security.gentoo.org/
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Severity: Normal
Title: PHP: Vulnerabilities in included PCRE and XML-RPC libraries
Date: September 27, 2005
Bugs: #102373
ID: 200509-19

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Synopsis
========

PHP makes use of an affected PCRE library and ships with an affected
XML-RPC library and is therefore potentially vulnerable to remote
execution of arbitrary code.

Background
==========

PHP is a general-purpose scripting language widely used to develop
web-based applications. It can run inside a web server using the
mod_php module or the CGI version of PHP, or can run stand-alone in a
CLI.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-php/php < 4.4.0-r1 *>= 4.3.11-r1
>= 4.4.0-r1
2 dev-php/mod_php < 4.4.0-r2 *>= 4.3.11-r1
>= 4.4.0-r2
3 dev-php/php-cgi < 4.4.0-r2 *>= 4.3.11-r2
>= 4.4.0-r2
-------------------------------------------------------------------
3 affected packages on all of their supported architectures.
-------------------------------------------------------------------

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

PHP makes use of a private copy of libpcre which is subject to an
integer overflow leading to a heap overflow (see GLSA 200508-17). It
also ships with an XML-RPC library affected by a script injection
vulnerability (see GLSA 200508-13).

Impact
======

An attacker could target a PHP-based web application that would use
untrusted data as regular expressions, potentially resulting in the
execution of arbitrary code. If web applications make use of the
XML-RPC library shipped with PHP, they are also vulnerable to remote
execution of arbitrary PHP code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PHP users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose dev-php/php

All mod_php users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose dev-php/mod_php

All php-cgi users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose dev-php/php-cgi

References
==========

[ 1 ] CAN-2005-2491
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2491
[ 2 ] CAN-2005-2498
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2498
[ 3 ] GLSA 200508-13
http://www.gentoo.org/security/en/glsa/glsa-200508-13.xml
[ 4 ] GLSA 200508-17
http://www.gentoo.org/security/en/glsa/glsa-200508-17.xml

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

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

http://security.gentoo.org/glsa/glsa-200509-19.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


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