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Gentoo Linux Security Advisory                           GLSA 200703-21
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                                            http://security.gentoo.org/
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  Severity: High
     Title: PHP: Multiple vulnerabilities
      Date: March 20, 2007
      Bugs: #153911
        ID: 200703-21

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Synopsis
========

PHP contains several vulnerabilities including a heap buffer overflow,
potentially leading to the remote execution of arbitrary code under
certain conditions.

Background
==========

PHP is a widely-used general-purpose scripting language that is
especially suited for Web development and can be embedded into HTML.

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

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  dev-lang/php     < 5.2.1-r3                           >= 5.2.1-r3
                                                         *>= 5.1.6-r11
                                                             *>= 4.4.6

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

Several vulnerabilities were found in PHP by the Hardened-PHP Project
and other researchers. These vulnerabilities include a heap-based
buffer overflow in htmlentities() and htmlspecialchars() if called with
UTF-8 parameters, and an off-by-one error in str_ireplace(). Other
vulnerabilities were also found in the PHP4 branch, including possible
overflows, stack corruptions and a format string vulnerability in the
*print() functions on 64 bit systems.

Impact
======

Remote attackers might be able to exploit these issues in PHP
applications making use of the affected functions, potentially
resulting in the execution of arbitrary code, Denial of Service,
execution of scripted contents in the context of the affected site,
security bypass or information leak.

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-lang/php"

References
==========

  [ 1 ] CVE-2006-5465
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5465
  [ 2 ] CVE-2007-0906
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0906
  [ 3 ] CVE-2007-0907
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0907
  [ 4 ] CVE-2007-0908
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0908
  [ 5 ] CVE-2007-0909
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0909
  [ 6 ] CVE-2007-0910
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0910
  [ 7 ] CVE-2007-0911
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0911
  [ 8 ] CVE-2007-0988
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0988
  [ 9 ] CVE-2007-1286
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1286
  [ 10 ] CVE-2007-1375
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1375
  [ 11 ] CVE-2007-1376
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1376
  [ 12 ] CVE-2007-1380
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1380
  [ 13 ] CVE-2007-1383
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1383
  [ 14 ] PHP 4.4.5 Release Announcement
         http://www.php.net/releases/4_4_5.php
  [ 15 ] PHP 5.2.1 Release Announcement
         http://www.php.net/releases/5_2_1.php

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

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

  http://security.gentoo.org/glsa/glsa-200703-21.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 2007 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