| Plugin ID | 280 |
| Plugin name | Apache prior 2.0.52 Multiple Spaces CPU Overload Denial-of-Service |
| Plugin filename | Apache prior 2.0.52 Multiple Spaces CPU Overload Denial-of-Service.plugin |
| Plugin filesize | 3120 bytes |
| Plugin family | Denial of Service |
| Plugin created name | David Nester |
| Plugin created email | david at icrew dot org |
| Plugin created web | http://www.icrew.org |
| Plugin created company | iCrew Security |
| Plugin created date | 2004/12/05 |
| 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 | 2004/12/06 |
| Plugin version | 1.0 |
| Plugin protocol | tcp |
| Plugin port | 80 |
| Plugin procedure detection | open|send HEAD / HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/#.# ### *Apache/1.#* OR HTTP/#.# ### *Apache/2.0.[0-4]* OR HTTP/#.# ### *Apache/2.0.5[0-2]* |
| Plugin detection accuracy | 80 |
| Plugin comment | This plugin was written with the ATK Attack Editor. |
| Bug published name | Chintan Trivedi |
| Bug published email | chesschintan at gmail dot com |
| Bug published web | |
| Bug published date | 2004/01/01 |
| Bug produced name | Apache Software Foundation |
| Bug produced email | apache at apache dot org |
| Bug produced web | http://httpd.apache.org |
| Bug not affected | Other versions or solutions |
| Bug vulnerability class | Denial Of Service |
| Bug description | Through this vulnerability, a user is able to create a denial of service by issuing a HTTP GET request with several thousand spaces. This will cause CPU overhead to increase to a point of denial of service. This can be exploited by a remote, unauthenticated user. |
| Bug solution | This is resolved in Apache httpd 2.0.53-dev. Be aware that this is a development release. |
| Bug fixing time | Approx. 1 hour |
| Bug exploit availability | Yes |
| Bug exploit url | http://securitytracker.com/id?1012083 |
| Bug remote | Yes |
| Bug local | No |
| Bug severity | High |
| Bug popularity | 5 |
| Bug simplicity | 8 |
| Bug impact | 9 |
| Bug risk | 6 |
| Bug Nessus risk | High |
| Bug ISS Scanner rating | High |
| Source CVE | CAN-2004-0942 |
| 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.apacheweek.com/features/security-13 |