bugtraq - ASLR now built into Vista

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Date: Fri, 26 May 2006 04:22:49 +0100
From: "David Litchfield" <davidl@...software.com>
To: <full-disclosure@...ts.grok.org.uk>, <bugtraq@...urityfocus.com>,
	<ntbugtraq@...tserv.ntbugtraq.com>
Subject: ASLR now built into Vista

Address Space Layout Randomization is now part of Vista as of beta 2 [1] . I 
wrote about ASLR on the Windows platform back in September last year [2] and 
noted that unless you rebase the image exe then little (not none!) is added. 
ASLR in Vista solves this so remote exploitation of overflows has just got a 
lot harder. I've not done a thorough analysis yet but, all going well, this 
is a fantastic way for Microsoft to go and builds on the work done with 
NX/DEP and stack cookies/canaries.

Cheers,
David Litchfield

[1] 
http://msdn.microsoft.com/windowsvista/downloads/products/getthebeta/default.aspx
[2] http://www.ngssoftware.com/papers/xpms.pdf

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