Check Point Advisories

InterNetNews NULL Path Denial of Service

Vulnerability
Protection

Check Point Reference:	CPAI-2004-106
Date Published:	4 Nov 2009
Severity:	Medium
Last Updated:	Wednesday 04 November, 2009
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The InterNetNews package (INN) is a complete Usenet system. It includes innd, an NNTP server, and nnrpd, a newsreading server. A vulnerability exists in the 'innd' daemon of InterNetNews (INN), which handles NNTP connections. This vulnerability can be create a denial of service condition. A successful exploit attempt will cause the 'innd' process to terminate due to an access violation.

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 InterNetNews NULL Path Denial of Service 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: NNTP Protection Violation.
Attack Information: InterNetNews NULL path denial of service