Check Point Advisories

RealNetworks Helix Server RTSP SETUP Request Denial of Service (CVE-2009-2534)

Check Point Reference: CPAI-2009-167
Date Published: 27 Aug 2009
Severity: High
Last Updated: Tuesday 27 September, 2011
Source:
Industry Reference:CVE-2009-2534
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description Helix Server is a multi-media server that is designed to serve streaming and static audio and video content. A denial of service vulnerability has been reported in RealNetworks Helix Server. The vulnerability is due to an error in the way RealNetworks Helix Server handles SETUP requests. A remote attacker may trigger this issue by sending a crafted SETUP request to an affected server. Successful exploitation of this issue could create a denial of service condition, as a result of processing the malicious command, causing the system to become non-responsive.

Protection Overview

This protection will detect and block malformed RTSP SETUP requests.

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 / R71 / R70 / R65

  1. In the IPS tab, click Protections and find the RealNetworks Helix Server RTSP SETUP Request Denial of Service protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  RTSP Enforcement Violation.
Attack Information:  RealNetworks Helix server RTSP SETUP request denial of service

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