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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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Gentoo Linux Security Advisory                           GLSA 200410-04
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: PHP: Memory disclosure and arbitrary location file upload
      Date: October 06, 2004
      Bugs: #64223
        ID: 200410-04

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Synopsis
========

Two bugs in PHP may allow the disclosure of portions of memory and
allow remote attackers to upload files to arbitrary locations.

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           < 4.3.9                           >= 4.3.9
  2  dev-php/mod_php       < 4.3.9                            >= 4.3.9
  3  dev-php/php-cgi       < 4.3.9                            >= 4.3.9
    -------------------------------------------------------------------
     3 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Stefano Di Paola discovered two bugs in PHP. The first is a parse error
in php_variables.c that could allow a remote attacker to view the
contents of the target machine's memory. Additionally, an array
processing error in the SAPI_POST_HANDLER_FUNC() function inside
rfc1867.c could lead to the $_FILES array being overwritten.

Impact
======

A remote attacker could exploit the first vulnerability to view memory
contents. On a server with a script that provides file uploads, an
attacker could exploit the second vulnerability to upload files to an
arbitrary location. On systems where the HTTP server is allowed to
write in a HTTP-accessible location, this could lead to remote
execution of arbitrary commands with the rights of the HTTP server.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PHP, mod_php and php-cgi users should upgrade to the latest stable
version:

    # emerge sync

    # emerge -pv ">=dev-php/php-4.3.9"
    # emerge ">=dev-php/php-4.3.9"

    # emerge -pv ">=dev-php/mod_php-4.3.9"
    # emerge ">=dev-php/mod_php-4.3.9"

    # emerge -pv ">=dev-php/php-cgi-4.3.9"
    # emerge ">=dev-php/php-cgi-4.3.9"

References
==========

  [ 1 ] Secunia Advisory
        http://secunia.com/advisories/12560/
  [ 2 ] BugTraq post regarding the php_variables.c issue
        http://www.securityfocus.com/archive/1/375294
  [ 3 ] BugTraq post regarding the rfc1867.c issue
        http://www.securityfocus.com/archive/1/375370

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

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

  http://security.gentoo.org/glsa/glsa-200410-04.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 2004 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/1.0
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