Check Point Advisories

Network Time Protocol Arbitrary File Overwrite (CVE-2015-7703)

Check Point Reference: CPAI-2015-1342
Date Published: 26 Nov 2015
Severity: High
Last Updated: Wednesday 16 August, 2023
Industry Reference:CVE-2015-7703
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Network Time Protocol 4.2.x before 4.2.8p4
Network Time Protocol 4.3.x before 4.3.77
Vulnerability Description An arbitrary file overwrite vulnerability exists in the Network Time Protocol. Successful exploitation can lead to data corruption or denial-of-service on the target system.

Protection Overview

This protection will detect and block 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

  1. In the IPS tab, click Protections and find the Network Time Protocol Arbitrary File Overwrite (CVE-2015-7703) 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:  NTP Enforcement Violation.
Attack Information:  Network Time Protocol Arbitrary File Overwrite (CVE-2015-7703)

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