Check Point Advisories

MailEnable IMAP Service Mailbox Name Buffer Overflow (CVE-2005-3691; CVE-2006-6290)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-331
Date Published:	2 Dec 2009
Severity:	Medium
Last Updated:	Sunday 18 November, 2012
Source:
Industry Reference:	CVE-2005-3691 CVE-2006-6290
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The Internet Message Access Protocol (IMAP) specifies a protocol for the access and manipulation of electronic mail. The protocol permits the manipulation of mailboxes on a remote server and allows a remote client, among other operations, to create, delete, or rename mailboxes on the server side. The MailEnable IMAP server is an implementation of the server side of the IMAP protocol. There exists a buffer overflow vulnerability in the MailEnable IMAP service component. The flaw is caused by insufficient boundary check when handling the mailbox name parameter of several IMAP commands. A malicious remote user may leverage this vulnerability to inject and execute arbitrary code on the target system. An attack may result in either a denial of service condition of the affected service or diversion of the process flow of the affected process. In the case of a successful code execution attack, the affected process will be diverted to attacker supplied code which is injected during the attack. If such an attack is not successful, then a denial of service condition will result. In the case of a denial of service attack, the affected process will terminate and will have to be manually restarted in order to restore functionality.

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 Mailbox Name 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 mailbox name buffer overflow