Check Point Advisories

RealNetworks Helix Server SNMP Master Agent TCP Connection Denial of Service (CVE-2012-1923)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-289
Date Published:	21 Oct 2012
Severity:	Low
Last Updated:	Tuesday 31 October, 2017
Source:
Industry Reference:	CVE-2012-1923
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A denial of service vulnerability has been reported in RealNetworks Helix server. The vulnerability is due to an error in the way the SNMP Master Agent process handles connection terminations on TCP port 705. A remote attacker can exploit this issue by connecting to the target server on port 705/TCP and then closing the connection. Successful exploitation would cause the SNMP Master Agent service to crash, resulting in a denial of service condition.

Protection Overview

This protection will detect and block attempts to establish connections on TCP port 705.

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 RealNetworks Helix Server SNMP Master Agent TCP Connection 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: Application Servers Protection Violation.
Attack Information: RealNetworks Helix Server SNMP master agent TCP connection denial of service