Check Point Advisories

ISC BIND TKEY Queries Assertion Failure (CVE-2015-5477)

Check Point Reference: CPAI-2015-1084
Date Published: 22 Dec 2020
Severity: Critical
Last Updated: Tuesday 22 December, 2020
Source:
Industry Reference:CVE-2015-5477
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? BIND 9 from BIND 9.1.0 (inclusive) through BIND 9.9.7-P1 and BIND 9.10.2-P2
Vulnerability Description A denial of service vulnerability has been reported in ISC BIND DNS servers. The vulnerability is due to the way that the DNS server improperly handles invalid TKEY resource records. A remote attacker may exploit this issue by sending a specially crafted DNS query to a DNS server. Successful exploitation may cause the server to crash, resulting in a denial of service condition.

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

  1. In the IPS tab, click Protections and find the ISC BIND TKEY Queries Assertion Failure (CVE-2015-5477) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  DNS Enforcement Violation.
Attack Information:  ISC BIND TKEY Queries Assertion Failure (CVE-2015-5477)

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