Check Point Advisories

DNS Rebind RPC Unauthenticated Access

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0044
Date Published:	24 Jan 2018
Severity:	Critical
Last Updated:	Wednesday 24 January, 2018
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A DNS rebind vulnerability exists within certain RPC authentication methods. This is due to the way the agent handles update requests. A successful attack could lead to malicious code execution.

Protection Overview

This protection detects 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 R80 / R77 / R75

In the IPS tab, click Protections and find the DNS Rebind RPC Unauthenticated Access 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: DNS Enforcement Violation.
Attack Information: DNS Rebind RPC Unauthenticated Access