This script is Copyright (C) 1999-2014 Tenable Network Security, Inc.
The remote mail server has a buffer overflow vulnerability.
The remote host appears to be running a vulnerable version of CMail.
Issuing a long argument to the 'MAIL FROM' command can result in a
buffer overflow. An attack would look something similar to :
MAIL FROM: AAA[...]AAA@nessus.org
Where AAA[...]AAA contains more than 8000 'A's.
A remote attacker could exploit this issue to crash the mail server,
or possibly to execute arbitrary code.
See also :
Contact the vendor for a fix.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.1
Public Exploit Available : true