Rule

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Sid
124-3

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Summary:
This event is generated when the smtp pre-processor detects an overly long response from an smtp server. For example, when an attempt is made to exploit a known vulnerability in libesmtp.

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

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Detailed Information:
Buffer overflow in read_smtp_response of protocol.c in libesmtp before 0.8.11 allows a remote SMTP server to (1) execute arbitrary code via a certain response or (2) cause a denial of service via long server responses.

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Affected Systems:
libesmtp libesmtp 1

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Attack Scenarios:
The attacker would need to supply excess data in a response to an smtp command.

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Ease of Attack:
Simple.

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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-2002-1090:
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2002-1090

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