full-disclosure - [ GLSA 200807-06 ] Apache: Denial of Service

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Date: Thu, 10 Jul 2008 00:00:06 +0200
From: Robert Buchholz <rbu@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200807-06 ] Apache: Denial of Service

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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@...too.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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