File: 3076.txt

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Rule:

--
Sid:
3076

--
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
"unsubscribe" command.

--
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.

--
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 Mercury Mail 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.

--
Affected Systems:
	Pegasus Mail Mercury Mail Transport System 3.32
	Pegasus Mail Mercury Mail Transport System 4.01a

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

--
Ease of Attack:
Simple.

--
False Positives:
None known.

--
False Negatives:
None known.

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

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

--
Additional References:

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