Check Point Advisories

Microsoft Host Integration Server SNA Protocol Denial of Service (MS11-082; CVE-2011-2007)

Check Point Reference: CPAI-2011-466
Date Published: 11 Oct 2011
Severity: High
Last Updated: Sunday 20 September, 2015
Source:
Industry Reference:CVE-2011-2007
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description Multiple denial of service vulnerabilities have been reported in Microsoft Host Integration Server (HIS). The vulnerabilities are due to an error in the way Microsoft HIS handles UDP and TCP traffic. A remote attacker may exploit these vulnerabilities by sending a specially crafted packet to an affected server listening on UDP port 1478 or TCP ports 1477 and 1478. Successful exploitation could allow a remote attacker to cause snabase.exe, snaserver.exe, snalink.exe, or mngagent.exe to stop responding, resulting in a DoS condition.

Protection Overview

This protection will detect and block attempts to send malformed packets to the server.

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

  1. In the IPS tab, click Protections and find the Microsoft Host Integration Server SNA Protocol Denial of Service (MS11-082) 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:  Application Servers Protection Violation.
Attack Information:  Microsoft Host Integration Server SNA protocol denial of service (MS11-082)

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