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Insecure Library Loading
Highly critical

Exchange Server TNEF Decoding and MAPI Command Processing Vulnerabilities

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Release Date:  2009-02-10    Last Update:  2009-02-17    Views:  11,915

Secunia Advisory SA33838

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


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

1) An unspecified error exists within the decoding of Transport Neutral Encapsulation Format (TNEF) data. This can be exploited to cause a memory corruption, e.g. when a user opens or previews a specially crafted e-mail message sent in TNEF format or when the Microsoft Exchange Server Information Store processes the specially crafted message.

Successful exploitation may allow execution of arbitrary code.

2) An error exists within the processing of MAPI commands in the EMSMDB2 (Electronic Messaging System Microsoft Data Base, 32 bit build) provider. This can be exploited to cause the application to stop responding by sending a specially crafted MAPI command using the EMSMDB32 provider.

NOTE: This also affects the Microsoft Exchange System Attendant, which uses the EMSMDB32 provider.


Solution:
Apply the patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Reported by the vendor.
2) The vendor credits Bogdan Materna, VoIPshield Systems.

Original Advisory:
MS09-003 (KB959239, KB959897, KB959241):
http://www.microsoft.com/technet/security/bulletin/ms09-003.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: Exchange Server TNEF Decoding and MAPI Command Processing Vulnerabilities

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