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Re: HIPS Buffer Overflow Protection - Bypass
From: <dfullerton () mantor org>
Date: Wed, 15 Nov 2006 14:43:59 -0500

Bart,

Basically this means that this HIPS does not detect nor protect against this buffer overflow. Looks like the only thing 
detected by the IPS was the different Metasploit payload except the “adduser” one (the actual shellcode signature). 
Consequently, we can say that any custom payload would go undetected. Signature-based recognition is one part of the 
whole detection picture and looks like this IPS can’t do much in others portions of detection/prevention for this 
vulnerability such as stack protection (write and execution of stack memory segment) and heuristic.

Danny Fullerton
IT security Specialist
Mantor Organization

___________________________________
NOCC, http://nocc.sourceforge.net



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