Check Point Advisories

Ipswitch IMail Server Mailing List Message Subject Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2010-142
Date Published:	15 Aug 2010
Severity:	High
Last Updated:	Sunday 15 August, 2010
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The Ipswitch IMail Server is a mail server product geared towards medium to large size organizations. It contains implementations of POP3, IMAP4, and SMTP servers. The SMTP server module is installed and started in a default installation. A buffer overflow vulnerability has been reported in Ipswitch IMail Server. The vulnerability is due a boundary error in the imailsrv.exe which handles messages sent to the imailsrv. The vulnerable code does not properly handle messages that are sent to certain mailing lists and have a crafted "Subject" header. A remote attacker can exploit this issue by sending a crafted message to the affected service. Successful exploitation of this vulnerability can lead to arbitrary code execution under the context of the System user.

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 Ipswitch IMail Server Mailing List Message Subject 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: SMTP Protection Violation.
Attack Information: Ipswitch IMail server mailing list message subject buffer overflow