[ GLSA 200602-03 ] Apache: Multiple vulnerabilities

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200602-03
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Apache: Multiple vulnerabilities
      Date: February 06, 2006
      Bugs: #115324, #118875
        ID: 200602-03

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Synopsis
========

Apache can be exploited for cross-site scripting attacks and is
vulnerable to a Denial of Service attack.

Background
==========

The Apache HTTP server is one of the most popular web servers on the
Internet. mod_imap provides support for server-side image maps; mod_ssl
provides secure HTTP connections.

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

    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  net-www/apache      < 2.0.55-r1                      >= 2.0.55-r1
                                                        *>= 2.0.54-r16
                                                          == 1.3.34-r2
                                                        *>= 1.3.34-r11

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

Apache's mod_imap fails to properly sanitize the "Referer" directive of
imagemaps in some cases, leaving the HTTP Referer header unescaped. A
flaw in mod_ssl can lead to a NULL pointer dereference if the site uses
a custom "Error 400" document. These vulnerabilities were reported by
Marc Cox and Hartmut Keil, respectively.

Impact
======

A remote attacker could exploit mod_imap to inject arbitrary HTML or
JavaScript into a user's browser to gather sensitive information.
Attackers could also cause a Denial of Service on hosts using the SSL
module (Apache 2.0.x only).

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Apache users should upgrade to the latest version, depending on
whether they still use the old configuration style
(/etc/apache/conf/*.conf) or the new one (/etc/apache2/httpd.conf).

2.0.x users, new style config:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-www/apache-2.0.55-r1"

2.0.x users, old style config:

    # emerge --sync
    # emerge --ask --oneshot --verbose "=net-www/apache-2.0.54-r16"

1.x users, new style config:

    # emerge --sync
    # emerge --ask --oneshot --verbose "=net-www/apache-1.3.34-r11"

1.x users, old style config:

    # emerge --sync
    # emerge --ask --oneshot --verbose "=net-www/apache-1.3.34-r2"

References
==========

  [ 1 ] CVE-2005-3352
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3352
  [ 2 ] CVE-2005-3357
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3357

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

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

  http://security.gentoo.org/glsa/glsa-200602-03.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 2006 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

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