| Plugin ID | 137 |
| Plugin name | Apache prior 2.0.50 mod_ssl Denial of Service |
| Plugin filename | Apache prior 2.0.50 mod_ssl Denial of Service.plugin |
| Plugin filesize | 3946 bytes |
| Plugin family | HTTP |
| Plugin created name | Marc Ruef |
| Plugin created email | marc dot ruef at computec dot ch |
| Plugin created web | http://www.computec.ch |
| Plugin created company | computec.ch |
| Plugin created date | 2004/09/02 |
| Plugin updated name | Marc Ruef |
| Plugin updated email | marc dot ruef at computec dot ch |
| Plugin updated web | http://www.computec.ch |
| Plugin updated company | computec.ch |
| Plugin updated date | 2004/11/14 |
| Plugin version | 2.0 |
| Plugin changelog | Deleted a not needed sleep command before the send command in version 1.1. Added the ISS X-Force and SecurityFocus BID data in version 1.2. Corrected the bug_published data in version 1.3. Corrected the plugin structure and added the accuracy values in 1.4. Improved the pattern matching and introduced the plugin changelog in 2.0 |
| Plugin protocol | tcp |
| Plugin port | 80 |
| Plugin procedure detection | open|send HEAD / HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/1.[0-1] ### *Server: Apache/2.0.[0-4][0-9]* OR HTTP/1.[0-1] ### *Server: Apache/2.0.50* |
| Plugin detection accuracy | 80 |
| Plugin comment | This plugin was written with the ATK Attack Editor. |
| Bug published name | Mick Wall |
| Bug published email | mick at mickandwendy dot com |
| Bug published web | http://www.mickandwendy.com |
| Bug published date | 2004/09/01 |
| Bug advisory | http://rhn.redhat.com/errata/RHSA-2004-349.html |
| Bug produced name | Apache Software Foundation |
| Bug produced email | apache at apache dot org |
| Bug produced web | http://httpd.apache.org |
| Bug affected | Apache web server prior 2.0.50 |
| Bug not affected | Apache web servers newer than 2.0.50 or other web servers |
| Bug vulnerability class | Denial Of Service |
| Bug description | The remote host is running an Apache web server prior 2.0.50. The module mod_ssl is vulnerable to a denial of service attack. An attacker can cause a large consumation of CPU usage if closing a SSL connection on a specific situation. |
| Bug solution | If the web server and/or ssh 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 fixing time | Approx. 30 minutes |
| Bug exploit availability | No |
| Bug exploit url | http://www.securityfocus.com/bid/9826/exploit/ |
| Bug remote | Yes |
| Bug local | Yes |
| Bug severity | Medium |
| Bug popularity | 7 |
| Bug simplicity | 6 |
| Bug impact | 8 |
| Bug risk | 7 |
| Source CVE | CAN-2004-0748 |
| Source SecurityFocus BID | 9826 |
| Source Secunia ID | 12434 |
| Source scipID | 821 |
| Source ISS X-Force ID | 17200 |
| Source RedHat Security Advisory ID | RHSA-2004-349 |
| 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 Misc. | http://nagoya.apache.org/bugzilla/show_bug.cgi?id=29964 |