[ GLSA 200411-18 ] Apache 2.0: Denial of Service by memory consumption

[Matthias Geerdsen <vorlon () gentoo org>]

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200411-18
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: Apache 2.0: Denial of Service by memory consumption
      Date: November 10, 2004
      Bugs: #70138
        ID: 200411-18

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A flaw in Apache 2.0 could allow a remote attacker to cause 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  net-www/apache      < 2.0.52-r1                      >= 2.0.52-r1
                                                                 < 2.0

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

Chintan Trivedi discovered a vulnerability in Apache httpd 2.0 that is
caused by improper enforcing of the field length limit in the
header-parsing code.

Impact
======

By sending a large amount of specially-crafted HTTP GET requests a
remote attacker could cause a Denial of Service of the targeted system.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Apache 2.0 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-www/apache-2.0.52-r1"

References
==========

  [ 1 ] CAN-2004-0942
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0942
  [ 2 ] Security vulnerabilities in Apache httpd 2.0
        http://www.apacheweek.com/features/security-20

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

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

  http://security.gentoo.org/glsa/glsa-200411-18.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/2.0

Attachment: signature.asc
Description: OpenPGP digital signature