December 9, 2008
Microsoft SharePoint Server is prone to a vulnerability that could let remote attackers gain unauthorized access. A successful exploit will let attackers access certain administrative functions of the SharePoint Server.
- Microsoft SharePoint Server 2007
- Microsoft SharePoint Server 2007 SP1
- Microsoft SharePoint Server 2007 x64
- Microsoft SharePoint Server 2007 x64 SP1
Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.
Microsoft has released a security bulletin and fixes to address this vulnerability.
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