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Insecure Library Loading
Highly critical

Microsoft Windows SMB Client Multiple Vulnerabilities

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Description


Some vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to compromise a user's system.

1) A memory allocation error exists in the Microsoft Server Message Block (SMB) client implementation when parsing SMB responses.

2) An error in the Microsoft Server Message Block (SMB) client implementation when handling SMB transaction responses with e.g. an incorrect "Data Offset" field can be exploited to corrupt memory via a specially crafted SMB transaction response.

3) An error in the Microsoft Server Message Block (SMB) client implementation when parsing SMB transaction responses can be exploited to corrupt memory via a specially crafted SMB transaction response.

4) An error exists in the Microsoft Server Message Block (SMB) client implementation when handling SMB responses.

Successful exploitation of these vulnerabilities allows execution of arbitrary code, but requires that a user is tricked into connecting to a malicious SMB server, e.g. via a specially crafted web site.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) The vendor credits Mark Rabinovich of Visuality Systems Ltd.
2-4) Laurent Gaffié of stratsec

Original Advisory:
MS10-020 (KB980232):
http://www.microsoft.com/technet/security/Bulletin/MS10-020.mspx

stratsec:
http://archives.neohapsis.com/archives/fulldisclosure/2010-04/0204.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 SMB Client Multiple Vulnerabilities

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