Check Point Advisories

Novell NetMail IMAP APPEND Command Buffer Overflow (CVE-2006-6425)

Vulnerability
Protection

Check Point Reference:	CPAI-2006-319
Date Published:	19 Oct 2009
Severity:	High
Last Updated:	Monday 19 October, 2009
Source:
Industry Reference:	CVE-2006-6425
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Novell NetMail is an electronic mail server product. Novell NetMail supports various email access and exchange protocols, including IMAP. 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 NetMail IMAP server is a server side implementation of the IMAP protocol. There exists a buffer overflow vulnerability in the Novell NetMail IMAP service. The flaw manifests itself when the affected product processes a crafted IMAP APPEND command. An authenticated remote attacker can exploit this vulnerability to cause a denial of service condition or inject and execute arbitrary code with the privileges of the IMAP server process. In an attack case where code injection is not successful, the attacked service may stop functioning. In a more sophisticated attack where code injection is successful, the behaviour of the target host is entirely dependent on the intended function of the injected code. The code in such a case would execute within the security context of the affected service, which is in Administrators Group on Windows platforms by default.

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 Novell NetMail IMAP APPEND 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: Novell NetMail IMAP APPEND command buffer overflow