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Insecure Library Loading
Moderately critical

Microsoft Windows SMBv2 Multiple Vulnerabilities

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Release Date:  2009-09-08    Last Update:  2010-08-18    Views:  12,998

Secunia Advisory SA36623

Where:

From local network

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.

1) An array indexing error in the srv2.sys kernel driver when processing the Process ID variable of the NEGOTIATE PROTOCOL request can be exploited to dereference out-of-bounds memory via a specially crafted SMB packet.

Successful exploitation may allow execution of arbitrary code.

2) An error in the processing of SMBv2 packets can be exploited to trigger the execution of an infinite loop and hang an affected system via a specially crafted SMBv2 packet.

3) An error when processing SMB command values can be exploited to potentially execute arbitrary code via a specially crafted SMB packet.

NOTE: Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for Itanium-based Systems are not affected by the vulnerabilities.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Laurent Gaffié
2) Reported by the vendor.
3) The vendor credits Matthieu Suiche of the Netherlands Forensics Institute.

Original Advisory:
Microsoft (KB975517):
http://www.microsoft.com/technet/security/Bulletin/MS09-050.mspx

Microsoft:
http://www.microsoft.com/technet/security/advisory/975497.mspx

Laurent Gaffié:
http://g-laurent.blogspot.com/2009/09/windows-vista7-smb20-negotiate-protocol.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 SMBv2 Multiple Vulnerabilities

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