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Microsoft Windows Kernel Mapped Memory Insecure Permissions

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Description


eEye Digital Security has reported a vulnerability in Microsoft Windows, which can be exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to a race condition in the kernel's Virtual DOS Machine (VDM) implementation. This results in insecure permissions on a mapped memory segment thereby allowing manipulation of the contents.

Successful exploitation allows execution of arbitrary code with escalated privileges.

NOTE: This security issue does not affected Windows for x64 and Itanium-based systems.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Derek Soeder, eEye Digital Security.

Original Advisory:
MS07-022 (KB931784):
http://www.microsoft.com/technet/security/Bulletin/MS07-022.mspx

eEye Digital Security:
http://research.eeye.com/html/advisories/published/AD20070410a.html

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 Kernel Mapped Memory Insecure Permissions

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