[ GLSA 200807-06 ] Apache: Denial of Service

[Robert Buchholz <rbu () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200807-06
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Apache: Denial of Service
      Date: July 09, 2008
      Bugs: #222643, #227111
        ID: 200807-06

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Synopsis
========

Multiple vulnerabilities in Apache might lead to a Denial of Service.

Background
==========

The Apache HTTP server is one of the most popular web servers on the
Internet.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  www-servers/apache       < 2.2.9                         >= 2.2.9

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

Multiple vulnerabilities have been discovered in Apache:

* Dustin Kirkland reported that the mod_ssl module can leak memory
  when the client reports support for a compression algorithm
  (CVE-2008-1678).

* Ryujiro Shibuya reported that the ap_proxy_http_process_response()
  function in the mod_proxy module does not limit the number of
  forwarded interim responses (CVE-2008-2364).

* sp3x of SecurityReason reported a Cross-Site Request Forgery
  vulnerability in the balancer-manager in the mod_proxy_balancer
  module (CVE-2007-6420).

Impact
======

A remote attacker could exploit these vulnerabilities by connecting to
an Apache httpd, by causing an Apache proxy server to connect to a
malicious server, or by enticing a balancer administrator to connect to
a specially-crafted URL, resulting in a Denial of Service of the Apache
daemon.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Apache users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-servers/apache-2.2.9"

References
==========

  [ 1 ] CVE-2007-6420
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6420
  [ 2 ] CVE-2008-1678
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1678
  [ 3 ] CVE-2008-2364
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2364

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

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

  http://security.gentoo.org/glsa/glsa-200807-06.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 2008 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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