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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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