252
Apache prior 2.0.49 htaccess LIMIT directive bypass
HTTP
2004/09/21
Marc Ruef
marc dot ruef at computec dot ch
http://www.computec.ch
computec.ch
Marc Ruef
marc dot ruef at computec dot ch
http://www.computec.ch
computec.ch
2004/11/14
2.0
Corrected the plugin structure and added the accuracy values in 1.1. Improved the pattern matching and introduced the plugin changelog in 2.0
tcp
80
open|send HEAD / HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/1.[0-1] ### *Server: Apache/[0-1].* OR HTTP/1.[0-1] ### *Server: Apache/2.0.[0-3]* OR HTTP/1.[0-1] ### *Server: Apache/2.0.4[0-8]*
80
This plugin was written with the ATK Attack Editor.
FraMe and MaDj0kEr
2004/03/15
http://www.apacheweek.com/issues/97-09-05#configerrors
Apache Software Foundation
apache at apache dot org
http://httpd.apache.org
Apache prior 2.0.49
Apache 2.0.49 and newer or other solutions
Evasion
The remote host is running an Apache web server. A vulnerability has been discovered in the Apache web server prior 2.0.49 that if the requested resource is served by an Apache module and not by Apache Server itself, LIMIT restrictions may not apply. Additionally, CGI/Script resources that do not sufficiently check the calling method may potentially be invoked with methods not listed in the LIMIT clause to evade LIMIT restrictions.
If the web server 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. To make it harder to find the server the daemon could be configured to listen at another port (e.g. 8081). Alternation of the application banner can confuse an attacker and let him determine the wrong software. Additionally limit unwanted connections and communications with firewalling.
Approx. 2 hours
No
http://www.securityfocus.com/bid/9874/exploit/
Yes
Yes
Medium
6
7
9
6
No exploit ir required.
9874
Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427
http://www.apache.org
