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  3. Microsoft Exchange Server RSS Feed Remote Denial of Service Vulnerability

Microsoft Exchange Server RSS Feed Remote Denial of Service Vulnerability

Risk

Medium

Date Discovered

December 11, 2012

Description

Microsoft Exchange Server is prone to a remote denial-of-service vulnerability. Successful exploits will allow attackers to cause the affected computer to become unresponsive, denying service to legitimate users.

Technologies Affected

  • Microsoft Exchange Server 2007 SP 1
  • Microsoft Exchange Server 2007 SP2
  • Microsoft Exchange Server 2007 SP3
  • Microsoft Exchange Server 2010 SP1
  • Microsoft Exchange Server 2010 SP2

Recommendations

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 required. Restricting access to only trusted computers and networks might greatly reduce the likelihood of exploits.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Deploy NIDS to monitor network traffic for anomalous or suspicious activity. Monitor logs generated by NIDS and by the server itself for evidence of attacks against the server.
The vendor has released an advisory and fixes. Please see the references for more information.

Credits

Microsoft
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Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
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