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Gentoo Linux Security Advisory                           GLSA 200511-08
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: PHP: Multiple vulnerabilities
      Date: November 13, 2005
      Bugs: #107602, #111032
        ID: 200511-08

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Synopsis
========

PHP suffers from multiple issues, resulting in security functions
bypass, local Denial of service, cross-site scripting or PHP variables
overwrite.

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 and also stand-alone in a CLI.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  dev-php/php         < 4.4.0-r4                      *>= 4.3.11-r4
                                                           >= 4.4.0-r4
  2  dev-php/mod_php     < 4.4.0-r8                      *>= 4.3.11-r4
                                                           >= 4.4.0-r8
  3  dev-php/php-cgi     < 4.4.0-r5                      *>= 4.3.11-r5
                                                           >= 4.4.0-r5
    -------------------------------------------------------------------
     3 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Multiple vulnerabilities have been found and fixed in PHP:

* a possible $GLOBALS variable overwrite problem through file upload
  handling, extract() and import_request_variables() (CVE-2005-3390)

* a local Denial of Service through the use of the session.save_path
  option (CVE-2005-3319)

* an issue with trailing slashes in allowed basedirs (CVE-2005-3054)

* an issue with calling virtual() on Apache 2, allowing to bypass
  safe_mode and open_basedir restrictions (CVE-2005-3392)

* a problem when a request was terminated due to memory_limit
  constraints during certain parse_str() calls (CVE-2005-3389)

* The curl and gd modules allowed to bypass the safe mode
  open_basedir restrictions (CVE-2005-3391)

* a cross-site scripting (XSS) vulnerability in phpinfo()
  (CVE-2005-3388)

Impact
======

Attackers could leverage these issues to exploit applications that are
assumed to be secure through the use of proper register_globals,
safe_mode or open_basedir parameters. Remote attackers could also
conduct cross-site scripting attacks if a page calling phpinfo() was
available. Finally, a local attacker could cause a local Denial of
Service using malicious session.save_path options.

Workaround
==========

There is no known workaround that would solve all issues 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 ] CVE-2005-3054
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3054
  [ 2 ] CVE-2005-3319
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3319
  [ 3 ] CVE-2005-3388
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3388
  [ 4 ] CVE-2005-3389
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3389
  [ 5 ] CVE-2005-3390
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3390
  [ 6 ] CVE-2005-3391
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3391
  [ 7 ] CVE-2005-3392
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3392

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

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

  http://security.gentoo.org/glsa/glsa-200511-08.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