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Gentoo Linux Security Advisory 200705-19

Gentoo Linux Security Advisory 200705-19
Posted May 31, 2007
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200705-19 - Several vulnerabilities were found in PHP, most of them during the Month Of PHP Bugs (MOPB) by Stefan Esser. The most severe of these vulnerabilities are integer overflows in wbmp.c from the GD library and in the substr_compare() PHP 5 function. Ilia Alshanetsky also reported a buffer overflow in the make_http_soap_request() and in the user_filter_factory_create() functions, and Stanislav Malyshev discovered another buffer overflow in the bundled XMLRPC library. Additionally, the session_regenerate_id() and the array_user_key_compare() functions contain a double-free vulnerability. Finally, there exist implementation errors in the Zend engine, in the mb_parse_str(), the unserialize() and the mail() functions and other elements. Versions less than 5.2.2 are affected.

tags | advisory, overflow, php, vulnerability
systems | linux, gentoo
advisories | CVE-2007-1001, CVE-2007-1285, CVE-2007-1286, CVE-2007-1484, CVE-2007-1521, CVE-2007-1583, CVE-2007-1700, CVE-2007-1701, CVE-2007-1711, CVE-2007-1717, CVE-2007-1718, CVE-2007-1864, CVE-2007-1900, CVE-2007-2509, CVE-2007-2510, CVE-2007-2511
SHA-256 | 85b7223b6bfd70f54588716713c6a4f7ef1cdaf921d40a164c836fe16bbb3b6f

Gentoo Linux Security Advisory 200705-19

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Gentoo Linux Security Advisory GLSA 200705-19
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http://security.gentoo.org/
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Severity: High
Title: PHP: Multiple vulnerabilities
Date: May 26, 2007
Bugs: #169372
ID: 200705-19

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Synopsis
========

PHP contains several vulnerabilities including buffer and integer
overflows which could under certain conditions lead to the remote
execution of arbitrary code.

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 < 5.2.2 *>= 4.4.7
>= 5.2.2

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

Several vulnerabilities were found in PHP, most of them during the
Month Of PHP Bugs (MOPB) by Stefan Esser. The most severe of these
vulnerabilities are integer overflows in wbmp.c from the GD library
(CVE-2007-1001) and in the substr_compare() PHP 5 function
(CVE-2007-1375). Ilia Alshanetsky also reported a buffer overflow in
the make_http_soap_request() and in the user_filter_factory_create()
functions (CVE-2007-2510, CVE-2007-2511), and Stanislav Malyshev
discovered another buffer overflow in the bundled XMLRPC library
(CVE-2007-1864). Additionally, the session_regenerate_id() and the
array_user_key_compare() functions contain a double-free vulnerability
(CVE-2007-1484, CVE-2007-1521). Finally, there exist implementation
errors in the Zend engine, in the mb_parse_str(), the unserialize() and
the mail() functions and other elements.

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 5 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/php-5.2.2"

All PHP 4 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/php-4.4.7"

References
==========

[ 1 ] CVE-2007-1001
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1001
[ 2 ] CVE-2007-1285
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1285
[ 3 ] CVE-2007-1286
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1286
[ 4 ] CVE-2007-1484
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1484
[ 5 ] CVE-2007-1521
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1521
[ 6 ] CVE-2007-1583
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1583
[ 7 ] CVE-2007-1700
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1700
[ 8 ] CVE-2007-1701
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1701
[ 9 ] CVE-2007-1711
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1711
[ 10 ] CVE-2007-1717
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1717
[ 11 ] CVE-2007-1718
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1718
[ 12 ] CVE-2007-1864
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1864
[ 13 ] CVE-2007-1900
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1900
[ 14 ] CVE-2007-2509
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2509
[ 15 ] CVE-2007-2510
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2510
[ 16 ] CVE-2007-2511
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2511

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

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

http://security.gentoo.org/glsa/glsa-200705-19.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 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
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