| Plugin ID | 227 |
| Plugin name | Apache prior 2.0.51-dev mod_dav denial of service |
| Plugin filename | Apache prior 2.0.51-dev mod_dav denial of service.plugin |
| Plugin filesize | 3955 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 | 2004/09/15 |
| 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 | Added Bugtraq and Misc. data in version 1.1. Corrected the plugin structure and added the accuracy values in 1.2. 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/2.0.5[0-1]* |
| Plugin detection accuracy | 80 |
| Plugin comment | I don't know if it is possible to detect dev versions by banner-grabbing. That is why this plugin may be not 100 % accurate. But the Nessus plugin has the same limitations. |
| Bug published email | info at apache dot org |
| Bug published web | http://www.apache.org |
| Bug published company | Apache Team |
| Bug published date | 2004/09/15 |
| Bug advisory | http://www.apache.org/dist/httpd/Announcement2.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 2.0.51-dev |
| Bug not affected | Apache web servers newer than 2.0.51-dev or other web servers |
| Bug vulnerability class | Denial Of Service |
| Bug description | The remote host is running an Apache web server prior 2.0.51-dev. The module mod_dav is vulnerable to a denial of service attack if a special sequence of LOCK-requests is sent. These methods have to be supported by the target system. |
| Bug solution | If the web server and/or dav 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/11185/exploit/ |
| Bug remote | Yes |
| Bug local | Yes |
| Bug severity | Medium |
| Bug popularity | 6 |
| Bug simplicity | 6 |
| Bug impact | 7 |
| Bug risk | 6 |
| Bug Nessus risk | High |
| Bug check tools | Nessus is able to do the same check. |
| Source CVE | CAN-2004-0493 |
| Source SecurityFocus BID | 11185 |
| Source Secunia ID | 12527 |
| Source scipID | 841 |
| 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=31183 |