Check Point Advisories

ISC BIND DNSSEC Key Parsing buffer.c Denial of Service (CVE-2015-5722)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-1188
Date Published:	7 Oct 2015
Severity:	Critical
Last Updated:	Monday 30 November, 2015
Source:	ISC AA-01287
Industry Reference:	CVE-2015-5722
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	ISC BIND 9.0.0 through 9.8.8 ISC BIND 9.10.0 through 9.10.2-P3 ISC BIND 9.9.0 through 9.9.7-P2
Vulnerability Description	A denial of service vulnerability exists in ISC BIND. The vulnerability is due to an error in buffer.c while parsing certain malformed DNSSEC keys. A remote attacker can exploit this vulnerability by sending crafted queries under certain circumstances. Successful exploitation will result in a denial of service condition.

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 DNSSEC Key Parsing buffer.c 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 DNSSEC Key Parsing buffer.c Denial of Service