bugtraq - [REVERSEMODE ADVISORY] MS06-030 - Microsoft Mrxsmb.sys privilege escalation advisory

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Date: Wed, 14 Jun 2006 00:00:56 +0200
From: Reversemode <advisories@...ersemode.com>
To: bugtraq@...urityfocus.com
Subject: [REVERSEMODE ADVISORY] MS06-030 - Microsoft Mrxsmb.sys privilege
 escalation advisory

Microsoft Server Message Block Redirector Driver (mrxsmb.sys)does not
verify  user-mode buffer properly, allowing to any user to overwrite any
desired memory address. The successful exploitation results in Ring0
code execution.

+ Paper/Advisory: -Reversing mrxsmb.sys. Chapter I "Getting Ring0"-(pdf)
+ Exploit code (c source code)

Both two can be downloaded at www.reversemode.com

This issue has been addressed in the recent bulletin, MS06-030 .

Ruben Santamarta,
www.reversemode.com