<plugin_id>236</plugin_id>
<plugin_name>Apache 2.0.35 to 2.0.50 apr-util library IPv6 URL parsing denial of service</plugin_name>
<plugin_family>HTTP</plugin_family>
<plugin_created_date>2004/09/16</plugin_created_date>
<plugin_created_name>Marc Ruef</plugin_created_name>
<plugin_created_email>marc dot ruef at computec dot ch</plugin_created_email>
<plugin_created_web>http://www.computec.ch</plugin_created_web>
<plugin_created_company>computec.ch</plugin_created_company>
<plugin_updated_name>Marc Ruef</plugin_updated_name>
<plugin_updated_email>marc dot ruef at computec dot ch</plugin_updated_email>
<plugin_updated_web>http://www.computec.ch</plugin_updated_web>
<plugin_updated_company>computec.ch</plugin_updated_company>
<plugin_updated_date>2004/11/14</plugin_updated_date>
<plugin_version>2.0</plugin_version>
<plugin_changelog>Enhanced the solution text in version 1.1. Corrected the plugin structure and added the accuracy values in 1.2. Added the product produce information in version 1.3. Improved the pattern matching and introduced the plugin changelog in 2.0</plugin_changelog>
<plugin_protocol>tcp</plugin_protocol>
<plugin_port>80</plugin_port>
<plugin_procedure_detection>open|send HEAD / HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/1.[0-1] ### *Server: Apache/2.0.[3-4][0-9]* OR HTTP/1.[0-1] ### *Server: Apache/2.0.50*</plugin_procedure_detection>
<plugin_detection_accuracy>80</plugin_detection_accuracy>
<plugin_comment>This plugin was written with the ATK Attack Editor.</plugin_comment>
<bug_published_email>vulteam at niscc dot gov dot uk</bug_published_email>
<bug_published_web>http://www.niscc.gov.uk</bug_published_web>
<bug_published_company>NISCC</bug_published_company>
<bug_published_date>2004/09/15</bug_published_date>
<bug_advisory>http://www.uniras.gov.uk/vuls/2004/403518/</bug_advisory>
<bug_produced_name>Apache Software Foundation</bug_produced_name>
<bug_produced_email>apache at apache dot org</bug_produced_email>
<bug_produced_web>http://httpd.apache.org</bug_produced_web>
<bug_affected>Apache 2.0.35 to 2.0.50</bug_affected>
<bug_not_affected>Apache web servers newer than 2.0.50 or other web servers</bug_not_affected>
<bug_vulnerability_class>Denial Of Service</bug_vulnerability_class>
<bug_description>The remote host is running an Apache web server. The installed version comes with a vulnerable apr-util library. An attacker may be able to crash the server by using a corrupt IPv6 URI.</bug_description>
<bug_solution>If the web server and/or IPv6 support is not used it should be de-installed or de-activated. Install the newest patch or bugfix to solve the problem or upgrade to the latest software version which is not vulnerable anymore. Additionally limit unwanted connections and communications with firewalling.</bug_solution>
<bug_fixing_time>Approx. 30 minutes</bug_fixing_time>
<bug_exploit_availability>No</bug_exploit_availability>
<bug_exploit_url>http://www.securityfocus.com/bid/11187/exploit/</bug_exploit_url>
<bug_remote>Yes</bug_remote>
<bug_local>Yes</bug_local>
<bug_severity>Medium</bug_severity>
<bug_popularity>5</bug_popularity>
<bug_simplicity>6</bug_simplicity>
<bug_impact>7</bug_impact>
<bug_risk>6</bug_risk>
<source_cve>CAN-2004-0786</source_cve>
<source_securityfocus_bid>11187</source_securityfocus_bid>
<source_secunia_id>12540</source_secunia_id>
<source_scip_id>843</source_scip_id>
<source_heise_news>51138</source_heise_news>
<source_heise_security>51138</source_heise_security>
<source_literature>Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427</source_literature>
<source_misc>http://httpd.apache.org/download.cgi</source_misc>