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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Checks for IMAP overflow and SMTP DoS vulnerabilities in MailEnable
Detailed Explanation for this Vulnerability Assessment
The remote mail server is affected by multiple issues.
The remote host is running a version of MailEnable Professional or
MailEnable Enterprise Edition that is prone to the following
- An IMAP Authenticate Request Buffer Overflow Vulnerability
Sending an AUTHENTICATE or LOGIN command with an argument
of 1016 characters or more overflows a stack-based buffer.
A possible hacker can leverage this flaw to overwrite sensitive
program control variables and thereby control execution
flow of the server process.
- An SMTP Malformed EHLO Request Denial Of Service Vulnerability
The SMTP service does not properly handle malformed EHLO
commands and may crash when it encounters an argument
containing the character 0x99. A remote attacker could use
this flaw to crash the SMTP service, thereby denying service
to legitimate users.
See also :
Apply the IMAP and SMTP hotfix from 4th April 2005 located at
http://www.mailenable.com/hotfix/. [Note that this does not fix the
overflow involving an oversize LOGIN command.]
Network Security Threat Level:
Critical / CVSS Base Score : 10
Networks Security ID: 12994, 12995, 13040
Vulnerability Assessment Copyright: This script is Copyright (C) 2005-2007 Tenable Network Security
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