Check Point Advisories

DNSmasq Response Heap Buffer Overflow (CVE-2017-14491) - Ver2

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0795
Date Published:	15 Apr 2018
Severity:	High
Last Updated:	Tuesday 31 July, 2018
Source:
Industry Reference:	CVE-2017-14491
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	RedHat Enterprise Linux Workstation 7.0 Red Hat Enterprise Linux Desktop 6.0 Red Hat Enterprise Linux Workstation 6.0 RedHat Enterprise Linux Desktop 7.0 Debian Linux 7.0 Debian Linux 7.1 RedHat Enterprise Linux Server 7.0 Canonical Ubuntu Linux 14.04 LTS (Long-Term Support) Canonical Ubuntu Linux 12.04 LTS Red Hat Enterprise Linux Server 6.0
Vulnerability Description	A buffer overflow vulnerability exists in DNSmasq. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.

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

In the IPS tab, click Protections and find the DNSmasq Response Heap Buffer Overflow (CVE-2017-14491) - Ver2 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: Web Server Enforcement Violation.
Attack Information: DNSmasq Response Heap Buffer Overflow (CVE-2017-14491) - Ver2