Rule

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Sid
124-8

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in Microsoft Exchange Server.

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Impact:
Denial of Service. Information disclosure. Loss of integrity. 

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Detailed Information:
Heap-based buffer overflow in the SvrAppendReceivedChunk function in xlsasink.dll in the SMTP service of Exchange Server 2000 and 2003 allows remote attackers to execute arbitrary code via a crafted X-LINK2STATE extended verb request to the SMTP port.

This event can be controlled using the ((smtp)) configuration options.

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Affected Systems:
Microsoft Exchange Server 2000
Microsoft Exchange Server 2003

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Attack Scenarios:


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Ease of Attack:
Medium.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2005-0560:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-0560
  
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