| Plugin ID | 141 |
| Plugin name | Cerbere HTTP Proxy prior 1.2 HTTP Host field Denial of Service |
| Plugin filename | Cerbere HTTP Proxy prior 1.2 HTTP Host field Denial of Service.plugin |
| Plugin filesize | 3109 bytes |
| Plugin family | Firewalls |
| 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 | 2004/09/03 |
| 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 | Corrected the plugin structure and added the accuracy values in 1.1. Improved the pattern matching and introduced the plugin changelog in 2.0 |
| Plugin protocol | tcp |
| Plugin port | 80 |
| Plugin procedure detection | open|send GET http://www.computec.ch HTTP/1.0\nProxy-Connection: Keep-Alive\n\n|sleep|close|pattern_exists HTTP/#.# ### *Cerbère Proxy Server r*0* OR HTTP/#.# ### *Cerbère Proxy Server r*1.[0-2]* |
| Plugin detection accuracy | 80 |
| Plugin comment | This plugin was written with the ATK Attack Editor and it is inspired by the Nessus plugin. |
| Bug affected | Cerbere HTTP Proxy prior 1.2 |
| Bug not affected | Cerbere HTTP Proxy newer than 1.2 or other proxy servers |
| Bug vulnerability class | Buffer Overflow |
| Bug description | A Cerbere HTTP proxy server prior 1.2 seems to be running or proxying the web requests. This version is vulnerable to a denial of service attack in the Host:-field. An attacker may craft a malicious HTTP request with a large field to deny service to legetimate users. |
| Bug solution | Upgrade to the latest version of this software and firewall unwanted requests or install another proxy solution. |
| Bug fixing time | Approx. 30 minutes |
| Bug exploit availability | Maybe |
| Bug exploit url | http://www.securityfocus.com/bid/11085/exploit/ |
| Bug remote | Yes |
| Bug local | Yes |
| Bug severity | Medium |
| Bug popularity | 7 |
| Bug simplicity | 8 |
| Bug impact | 8 |
| Bug risk | 7 |
| Bug Nessus risk | Medium |
| Bug check tools | Nessus is able to do the same check. |
| Source SecurityFocus BID | 11085 |
| Source Nessus ID | 14640 |
| 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://www.computec.ch |