Check Point Advisories

ISC BIND apl_42.c INSIST Assertion Failure Denial of Service (CVE-2015-8704)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0150
Date Published:	25 Feb 2016
Severity:	Critical
Last Updated:	Sunday 28 February, 2016
Source:	ISC AA-01335
Industry Reference:	CVE-2015-8704
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	ISC BIND 9.10.0 through 9.10.3-P2 ISC BIND 9.3.0 through 9.8.8 ISC BIND 9.9.0 through 9.9.8-P2 ISC BIND 9.9.3-S1 through 9.9.8-S3
Vulnerability Description	A denial-of-service vulnerability has been reported in BIND DNS package bind9. The vulnerability is due to an error in string format operations that causes the BIND daemon to exit with an INSIST assertion failure when processing certain records. A remote attacker could exploit this vulnerability against Slave, Master, or Recursive servers by sending a malformed record.

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 ISC BIND apl_42.c INSIST 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 apl_42.c INSIST Assertion Failure Denial of Service