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Check Point Advisories

PowerDNS Recursor Denial of Service (CVE-2017-15120)

Check Point Reference: CPAI-2018-1113
Date Published: 28 Nov 2018
Severity: High
Last Updated: 25 Dec 2018
Industry Reference:CVE-2017-15120
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? PowerDNS Recursor before 4.0.8.
Vulnerability Description A denial of service vulnerability exists PowerDNS Recursor. The vulnerability is due to a NULL pointer dereference. An unauthenticated remote attacker could exploit this vulnerability by sending a specially crafted DNS query to a vulnerable server. Successful exploitation would result in a crash of the server process leading to denial of service.

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 PowerDNS Recursor Denial of Service (CVE-2017-15120) 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:  PowerDNS Recursor Denial of Service (CVE-2017-15120)

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