Check Point Advisories

Novell GroupWise Internet Agent iCalendar Parsing Denial of Service - Improved Performance (CVE-2011-3827)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-636
Date Published:	28 Oct 2012
Severity:	High
Last Updated:	Sunday 12 January, 2014
Source:
Industry Reference:	CVE-2011-3827
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A denial of service vulnerability has been reported in Novell GroupWise Internet Agent. The vulnerability is due to insufficient validation of certain data when parsing a received iCalendar message. A remote attacker could exploit this vulnerability by enticing a target user to open a specially crafted link. Successful exploitation would result in a denial-of-service condition.

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 Internet Agent iCalendar Parsing Denial of Service - Improved Performance 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: SMTP Protection Violation.
Attack Information: Novell GroupWise Internet Agent iCalendar parsing denial of service - improved performance