Check Point Advisories

Citrix Presentation Server IMA Invalid Event Data Length Denial of Service (CVE-2006-5861)

Vulnerability
Protection

Check Point Reference:	CPAI-2006-280
Date Published:	1 Dec 2009
Severity:	High
Last Updated:	Thursday 10 March, 2022
Source:
Industry Reference:	CVE-2006-5861
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The Citrix MetaFrame products are remote access and application publishing products built on Citrix' Independent Computing Architecture (ICA). The products allow for access and control of the remote hosts as well as deploying applications. There exists a memory access violation vulnerability in Citrix MetaFrame Presentation server. The flaw is due to improper handling of user supplied data in the messages. This issue can be exploited by an unauthenticated attacker to terminate the IMA service of Citrix MetaFrame Presentation server, causing a denial of service condition. In a successful attack case, the affected Independent Management Architecture service will terminate abnormally. The service will be unavailable until it is restarted manually.

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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Citrix Presentation Server IMA Invalid Event Data Length 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: Citrix ICA Protection Violation.
Attack Information: Citrix Presentation Server IMA Invalid Event Data Length Denial of Service