Check Point Advisories

Microsoft Windows DHCP Client Remote Code Execution (CVE-2019-0726)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-0563
Date Published:	1 May 2019
Severity:	Critical
Last Updated:	Sunday 19 May, 2019
Source:
Industry Reference:	CVE-2019-0726
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows 10 version 1803 Microsoft Windows Server 2019 Microsoft Windows Server 2019 (Server Core installation) Microsoft Windows Server version 1803 (Server Core Installation)
Vulnerability Description	A remote code execution vulnerability exists in Microsoft DHCP Client. The vulnerability is due to improper processing of DHCP response messages, causing memory corruption. A remote attacker could exploit this vulnerability by sending maliciously crafted DHCP responses to a vulnerable target.

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 Microsoft Windows DHCP Client Remote Code Execution (CVE-2019-0726) 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: DHCP Protection Violation.
Attack Information: Microsoft Windows DHCP Client Remote Code Execution (CVE-2019-0726)