On 6/19/07, H D Moore <[EMAIL PROTECTED]> wrote: > ... > Many commercial IPS products fail to decode HTTP requests which use 0x0c, > 0x0b, and 0x0d instead of the normal 0x20/0x09 separators. > ... > A request which contains multiple CRLF sequences instead of a valid method > is processed by Apache, yet ignored by most IPS engines
you can use many more than that. fill spaces with non printable and apache (and a few others) will eat it fine. \x01-\x1f, except ESC, maybe CR/LF depending on placement... is there a page somewhere that details which web servers handle sloppy input? (i bet the embedded httpd's are the most resistant) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
