Check Point Advisories

DNSmasq Denial of Service (CVE-2017-14495)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0823
Date Published:	3 Oct 2017
Severity:	Critical
Last Updated:	Sunday 22 September, 2024
Source:
Industry Reference:	CVE-2017-14495
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Canonical Ubuntu Linux 16.04 Redhat Enterprise Linux server 7.0 Redhat Enterprise Linux desktop 7.0 Canonical Ubuntu Linux 14.04 Canonical ubuntu Linux 17.04 Redhat enterprise Linux workstation 7.0 Debian Linux 7.0 Debian Linux 7.1 Debian Linux 9.0 Thekelleys DNSmasq 2.77 and below
Vulnerability Description	A denial of service vulnerability exists in DNSmasq. Successful exploitation of this vulnerability would allow a remote attacker to create a denial of service condition 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 DNSmasq Denial of Service (CVE-2017-14495) 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: DNSmasq Denial of Service (CVE-2017-14495)