bugtraq - ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel Vulnerability

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Date: Tue, 8 Feb 2011 19:11:29 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>,
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel
 Vulnerability

ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-064

February 8, 2011

-- CVE ID:
CVE-2011-0045

-- CVSS:
6.8, (AV:L/AC:L/Au:S/C:C/I:C/A:C)

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Windows XP

-- Vulnerability Details:
This vulnerability allows local attackers to execute arbitrary code from
the context of kernelspace on vulnerable installations of Microsoft
Windows. The ability to make a system call is required in order to
exploit this vulnerability.

The specific flaw exists within the kernel's support for Trace Events.
Due to a bad type conversion, the kernel will use a truncated length for
allocating data from userspace. When populating this buffer the kernel
will use a differing length causing a buffer overflow. This will cause
memory corruption and can lead to code execution under the context of
the kernel.

-- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://www.microsoft.com/technet/security/bulletin/ms11-011.mspx

-- Disclosure Timeline:
2010-09-29 - Vulnerability reported to vendor
2011-02-08 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * std_logic

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