Rule:

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Sid:
5704

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Summary:
This event is generated when an attempt is made to exploit a buffer overflow associated with the several commands of an IMAP service. This event is concerned with data supplied as a parameter to the SELECT command.

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Impact:
A successful attack may cause a denial of service or a buffer overflow and the subsequent execution of arbitrary code on a vulnerable server.

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Detailed Information:
This event is generated when excess data is detected in an IMAP command.  Some IMAP implementations exhibit programming errors that can lead to a buffer overflow condition when excess data is supplied to a static buffer.

A vulnerability exists in the way that the MailEnable IMAP service handles several commands.  An excessively long command argument can trigger a denial of service or a buffer overflow and the subsequent execution of arbitrary code on a vulnerable server.

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Affected Systems:
MailEnable Professional version 1.6 and prior
MailEnable Enterprise version 1.1 and prior

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Attack Scenarios:
An attacker can supplied an overly long command, causing denial of service or a buffer overflow.

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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.

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Contributors:
Sourcefire Vulnerability Research Team
Judy Novak <judy.novak@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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