Check Point Advisories

PHP Core timelib_meridian Heap Buffer Overflow (CVE-2017-16642)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-1004
Date Published:	20 Nov 2017
Severity:	Critical
Last Updated:	Monday 20 November, 2017
Source:
Industry Reference:	CVE-2017-16642
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A heap-based buffer overflow vulnerability exists in PHP core function timelib_meridian. The vulnerability is due to improper validation of user input. A remote attacker can exploit the vulnerability by sending a crafted request with a malformed time attribute.

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 PHP Core timelib_meridian Heap Buffer Overflow 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: PHP Core timelib_meridian Heap Buffer Overflow