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Microsoft Windows win32k.sys Driver Privilege Escalation Vulnerabilities

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Description


Some vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious, local users to gain escalated privileges.

1) An error in the Win32k kernel-mode driver (win32k.sys) when validating input passed from user mode can be exploited to execute arbitrary code in kernel-mode.

2) An error in the Win32k kernel-mode driver (win32k.sys) when validating input passed from user mode can be exploited to execute arbitrary code in kernel-mode.

3) A validation error in the Win32k kernel-mode driver (win32k.sys) when handling window class pointers can be exploited to execute arbitrary code in kernel-mode.

4) A validation error in the Win32k kernel-mode driver (win32k.sys) when handling window class pointers can be exploited to execute arbitrary code in kernel-mode.

5) An error in the Win32k kernel-mode driver (win32k.sys) when validating input passed from user mode can be exploited to corrupt memory.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Tarjei Mandt, Norman.

Original Advisory:
MS11-012 (KB2479628)
http://www.microsoft.com/technet/security/bulletin/ms11-012.mspx

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Windows win32k.sys Driver Privilege Escalation Vulnerabilities

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