Full Disclosure mailing list archives
Re: IPS Evasion with the Apache HTTP Server
From: 3APA3A <3APA3A () SECURITY NNOV RU>
Date: Wed, 20 Jun 2007 16:21:27 +0400
Dear H D Moore, --Tuesday, June 19, 2007, 11:20:41 PM, you wrote to full-disclosure () lists grok org uk: HDM> $ echo -ne "\r\n\r\n\r\n\r\n\r\n /buggy.php HTTP/1.0\r\n\r\n" | \ HDM> nc webserver 80 According to recommendations of RFC 2616, section 4.1 Web server or proxy server should ignore \r\n before request for compatibility with odd clients sending trailing \r\n with POST requests via keep-alive connections: In the interest of robustness, servers SHOULD ignore any empty line(s) received where a Request-Line is expected. In other words, if the server is reading the protocol stream at the beginning of a message and receives a CRLF first, it should ignore the CRLF. $ echo -ne " /buggy.php HTTP/1.0\r\n\r\n" | nc webserver 80 Does the same job. This problem (unsupported request method) was already reported by Michal Majchrowicz, see http://securityvulns.com/Qdocument846.html -- ~/ZARAZA http://securityvulns.com/ Электрические шоки очень полезны для формирования характера. (Лем) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- IPS Evasion with the Apache HTTP Server H D Moore (Jun 19)
- Re: IPS Evasion with the Apache HTTP Server coderman (Jun 19)
- Re: IPS Evasion with the Apache HTTP Server Valdis . Kletnieks (Jun 19)
- Re: IPS Evasion with the Apache HTTP Server coderman (Jun 19)
- Re: IPS Evasion with the Apache HTTP Server Valdis . Kletnieks (Jun 19)
- Re: IPS Evasion with the Apache HTTP Server 3APA3A (Jun 20)
- Re: IPS Evasion with the Apache HTTP Server Jamie Riden (Jun 20)
- Re: IPS Evasion with the Apache HTTP Server 3APA3A (Jun 20)
- Re: IPS Evasion with the Apache HTTP Server H D Moore (Jun 20)
- Re: IPS Evasion with the Apache HTTP Server H D Moore (Jun 20)
- Re: IPS Evasion with the Apache HTTP Server Jamie Riden (Jun 20)
- Re: IPS Evasion with the Apache HTTP Server coderman (Jun 19)