[ GLSA 200406-09 ] Horde-Chora: Remote code execution

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200406-09
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Horde-Chora: Remote code execution
      Date: June 15, 2004
      Bugs: #53800
        ID: 200406-09

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Synopsis
========

A vulnerability in Chora allows remote code execution and file upload.

Background
==========

Chora is a PHP-based SVN/CVS repository viewer by the HORDE project.

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

    -------------------------------------------------------------------
     Package              /   Vulnerable   /                Unaffected
    -------------------------------------------------------------------
  1  net-www/horde-chora        < 1.2.2                       >= 1.2.2

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

A vulnerability in the diff viewer of Chora allows an attacker to
inject shellcode. An attacker can exploit PHP's file upload
functionality to upload a malicious binary to a vulnerable server,
chmod it as executable, and run the file.

Impact
======

An attacker could remotely execute arbitrary binaries with the
permissions of the PHP script, conceivably allowing further
exploitation of local vulnerabilities and remote root access.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All users are advised to upgrade to the latest version of Chora:

    # emerge sync

    # emerge -pv ">=net-www/horde-chora-1.2.2"
    # emerge ">=net-www/horde-chora-1.2.2"

References
==========

  [ 1 ] e-matters Advisory
        http://security.e-matters.de/advisories/102004.html

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

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

     http://security.gentoo.org/glsa/glsa-200406-09.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 Technologies, 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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