http://www.sqlservercentral.com/blogs/brian_kelley/2009/02/11/new-security-bulletin-for-sql-server-2000-2005-ms09-004/

Printed 2014/12/19 10:35PM

New Security Bulletin for SQL Server 2000/2005 (MS09-004)

2009/02/11

Affected Versions:

Unaffected Versions:

Original Vulnerability Report: http://www.securityfocus.com/archive/1/archive/1/499042/100/0/threaded

Microsoft Security Bulletin Link: http://www.microsoft.com/technet/security/bulletin/ms09-004.mspx

Brief Analysis:

The extended stored procedure, sp_replwritetovarbin, has a buffer overflow vulnerability which can be exploited to perform a remote code exploit in the context of the SQL Server service account. The stored procedure is only used for transactional replication.

There is currently a proof of concept showing that the buffer overflow is possible but there is no publicly released exploit code nor are there any active exploits in the wild. There is a workaround which involves disabling the extended stored procedure, either by denying permissions to public or by dropping the extended stored procedure from the SQL Server.


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