Check Point Advisories

Novell GroupWise WebAccess Basic Authentication Buffer Overflow (CVE-2007-2171)

Vulnerability
Protection

Check Point Reference:	CPAI-2007-257
Date Published:	26 Nov 2009
Severity:	High
Last Updated:	Thursday 26 November, 2009
Source:
Industry Reference:	CVE-2007-2171
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Novell GroupWise is an enterprise collaboration system that provides secure e-mail, calendaring, scheduling, and instant messaging. GroupWise also includes task management, contact management, document management, and other productivity tools. GroupWise can be used on the users' desktop and can be deployed on multiple platforms such as Linux, Windows, or Macintosh. There exists a stack buffer overflow vulnerability in Novell GroupWise WebAccess. The vulnerability is due to a boundary error when processing crafted HTTP requests. A remote unauthenticated attacker could exploit this vulnerability by sending overly long authentication string to the service. Successful exploitation would allow for arbitrary code injection and execution with the privileges of the server process, usually System/root. In an attack case where code injection is not successful the affected application will terminate abnormally. Restoration of the functionality, in such a case, would require manual restart of the affected system. In a more sophisticated attack, where code injection is successful, the behaviour of the target 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 service process, which is 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 Novell GroupWise WebAccess Basic Authentication 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: Application Servers Protection Violation.
Attack Information: Novell GroupWise WebAccess basic authentication buffer overflow