Check Point Advisories

ISC BIND rndc Control Channel Interface Assertion Failure Denial of Service (CVE-2017-3138)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0468
Date Published:	5 Jun 2017
Severity:	Medium
Last Updated:	Monday 05 June, 2017
Source:	ISC
Industry Reference:	CVE-2017-3138
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	ISC BIND 9.10.0 through 9.10.4-P6 ISC BIND 9.10.4 through 9.10.4-P7 ISC BIND 9.10.5b1 through 9.10.5rc2 ISC BIND 9.11.0 through 9.11.0-P4 ISC BIND 9.11.1b1 through 9.11.1rc2 ISC BIND 9.8.0 through 9.8.8-P1 ISC BIND 9.9.0 through 9.9.9-P6 ISC BIND 9.9.10b1 through 9.9.10rc2 ISC BIND 9.9.3-S1 through 9.9.9-S8 ISC BIND 9.9.9 through 9.9.9-P7 ISC BIND 9.9.9-S1 through 9.9.9-S9
Vulnerability Description	A denial-of-service vulnerability exist in ISC BIND. The vulnerability is due to improper handling of a null command string sent to rndc control channel interface. A remote, authenticated attacker could exploit this vulnerability by sending a maliciously crafted packet to the rndc control channel interface of a target BIND server. Successful exploitation could lead to denial-of-service conditions.

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 ISC BIND rndc Control Channel Interface Assertion Failure 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: DNS Enforcement Violation.
Attack Information: ISC BIND rndc Control Channel Interface Assertion Failure Denial of Service