Check Point Advisories

NetSupport Manager Client Remote Handshake Messages Buffer Overflow (CVE-2011-0404)

Check Point Reference: CPAI-2011-077
Date Published: 14 Mar 2011
Severity: Critical
Last Updated: 14 Feb 2016
Industry Reference:CVE-2011-0404
Protection Provided by:

Security Gateway
R80, R77, R76, R75

Who is Vulnerable?
Vulnerability Description NetSupport Manager is a remote PC support and desktop management system which functions on many platforms. It is considered as a replacement for typical remote desktop applications such as Windows Terminal Service.A buffer overflow vulnerability has been reported in NetSupport Manager client daemon process. The vulnerability is due to a boundary error in the NetSupport Manager client daemon process while handling remote handshake messages on port 5405/TCP. A remote attacker could exploit this issue by sending a malicious request to the target client service. Successful exploitation of this vulnerability would allow injection and execution of arbitrary code on the vulnerable system and may terminate the service causing denial of service condition.

Protection Overview

This protection will detect and block malicious requests sent to the vulnerable client service.

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 / R76 / R75

  1. In the IPS tab, click Protections and find the NetSupport Manager Client Remote Handshake Messages Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

This protection's log will contain the following information:

Attack Name:  RDP Enforcement Violation.
Attack Information:  NetSupport Manager client remote handshake messages buffer overflow

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