Check Point Advisories

Novell GroupWise Messenger Accept-Language Header Buffer Overflow (CVE-2006-0992)

Vulnerability
Protection

Check Point Reference:	CPAI-2006-221
Date Published:	27 Oct 2009
Severity:	Critical
Last Updated:	Monday 17 December, 2018
Source:
Industry Reference:	CVE-2006-0992
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Novell GroupWise Messenger is a corporate instant messaging solution targeted towards medium to large enterprise organizations. It facilitates secure communications and policy-based management through Novell's eDirectory product suite. The product is based on a client server model where messaging clients connect to a central server to communicate after successful authentication is performed. A stack buffer overflow vulnerability exists in the Novell GroupWise Messenger product. The vulnerability is caused due to a flaw when verifying specific HTTP headers supplied by the client. An unauthenticated attacker may exploit this vulnerability to inject and execute code on a target host with System privileges. In an attack case where code injection is not successful, the affected service will terminate, dropping all existing connections and refusing further connections until restarted manually. In a sophisticated attack scenario where code injection is successful, the behaviour of the target system 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 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 Novell GroupWise Messenger Accept-Language Header 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: Instant Messenger.
Attack Information: Novell GroupWise Messenger Accept-Language header buffer overflow