Check Point Advisories

ISC BIND Integer Overflow (CVE-2021-25216)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1319
Date Published:	5 Dec 2022
Severity:	Critical
Last Updated:	Monday 05 December, 2022
Source:
Industry Reference:	CVE-2021-25216
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	ISC BIND prior to 9.11.31 ISC BIND prior to 9.16.15 ISC BIND prior to 9.17.12 ISC BIND Supported Preview Edition prior to 9.11.31-S1 ISC BIND Supported Preview Edition prior to 9.16.15-S1
Vulnerability Description	An integer overflow vulnerability exists in ISC BIND. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.

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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the ISC BIND Integer Overflow (CVE-2021-25216) 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 Integer Overflow (CVE-2021-25216)