Check Point Advisories

ISC BIND DNAME RRSIG Assertion Failure Denial of Service (CVE-2016-1286)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0354
Date Published:	16 May 2016
Severity:	Critical
Last Updated:	Tuesday 17 May, 2016
Source:	ISC AA-01353
Industry Reference:	CVE-2016-1286
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	ISC BIND 9.10.0 through 9.10.3-P3 ISC BIND 9.2.0 through 9.8.8 ISC BIND 9.9.0 through 9.9.8-P3 ISC BIND 9.9.3-S1 through 9.9.8-S5
Vulnerability Description	A denial-of-service vulnerability exists in ISC BIND9. The vulnerability is due to improperly processing DNAME resource record signature (RRSIG) records. A remote attacker could exploit this vulnerabilities by sending a maliciously crafted DNS packet to a target BIND server.

Protection Overview

This protection detects and blocks 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 DNAME RRSIG 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 DNAME RRSIG Assertion Failure Denial of Service