Check Point Advisories

MailEnable IMAP Service Invalid Command Buffer Overflow (CVE-2004-2501)

Vulnerability
Protection

Check Point Reference:	CPAI-2006-282
Date Published:	5 Nov 2009
Severity:	High
Last Updated:	Thursday 05 November, 2009
Source:
Industry Reference:	CVE-2004-2501
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	MailEnable is an email server suite for the Microsoft Windows platform. The product supports various popular mail transfer protocols such as SMTP, POP3 and IMAP. The components of the MailEnable product are installed as individual services on the system, called Connectors. A stack buffer overflow vulnerability exists in the MailEnable IMAP service. The specific flaw is due to improper boundary checking when handling the command continuation form of parameters passed to IMAP commands. An attacker may exploit the vulnerability to create a denial of service condition or possibly inject and execute arbitrary code on a vulnerable system. If the attack is not successful in code injection and execution, the target IMAP server process will terminate upon exploitation. If an attack results in successful code injection and its subsequent execution, the behaviour of the target host will depend on the intention of the attacker. Note that any code execution will be within the security context of the affected service, normally System.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the MailEnable IMAP Service Invalid Command Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: IMAP Protocol Violation.
Attack Information: MailEnable IMAP Service invalid command buffer overflow