GEN:SID 1:3071
Message IMAP status literal overflow attempt
Summary This event is generated when an attempt is made to exploit a buffer
overflow associated with the several commands of the Mercury Mail IMAP service.
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 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.
Corrective Action Upgrade to the latest non-affected version of the software.
Additional References  
Rule References bugtraq: 11775