Check Point Advisories

Microsoft Windows DHCP Server Denial of Service (CVE-2019-1206)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-1837
Date Published:	27 Feb 2020
Severity:	High
Last Updated:	Thursday 27 February, 2020
Source:
Industry Reference:	CVE-2019-1206
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2 Microsoft Windows Server 2016 Microsoft Windows Server 2019 Microsoft Windows Server version 1803 (Server Core Installation) Microsoft Windows Server version 1903 (Server Core installation)
Vulnerability Description	A remote code execution exists in the DHCP Server component of Microsoft Windows. The vulnerability is due to improper handling of DHCP failover packets leading to memory corruption. A remote attacker can exploit this vulnerability by sending crafted DHCP failover packets to the target server. Successful exploitation could result in the server abnormally terminating, resulting in a denial-of-service condition.

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 Server Denial of Service (CVE-2019-1206) 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: Windows SMB Protection Violation.
Attack Information: Microsoft Windows DHCP Server Denial of Service (CVE-2019-1206)