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Check Point Advisories

Dnsmasq Heap Based Overflow Remote Code Execution (CVE-2017-14491)

Check Point Reference: CPAI-2017-0821
Date Published: 3 Oct 2017
Severity: Critical
Last Updated: 3 Oct 2017
Industry Reference:CVE-2017-14491
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? Dnsmasq before 2.78
Vulnerability Description A remote code execution vulnerability exists in Dnsmasq. remote, unauthenticated attacker can exploit this vulnerability by sending crafted queries under certain circumstances.

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 Dnsmasq Heap Based Overflow Remote Code Execution (CVE-2017-14491) 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:  Dnsmasq Heap Based Overflow Remote Code Execution (CVE-2017-14491)

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