Check Point Advisories

Microsoft Windows DNS Server Spoofing - Ver2 (CVE-2007-3898)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0717
Date Published:	18 May 2015
Severity:	High
Last Updated:	Monday 18 May, 2015
Source:
Industry Reference:	CVE-2007-3898
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	There exits a vulnerability in Microsoft Windows DNS Server. The flaw is caused by predictable transaction identifiers in DNS requests generated. A remote attacker may leverage this vulnerability to use spoofed DNS responses to poison the DNS cache on the target system.

Protection Overview

This protection will detect and block 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 Microsoft Windows DNS Server Spoofing - Ver2 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: Microsoft Windows DNS Server Spoofing - Ver2