Check Point Advisories

Microsoft Windows CredSSP MITM Remote Code Execution (CVE-2018-0886)

Check Point Reference: CPAI-2018-0190
Date Published: 28 Mar 2018
Severity: High
Last Updated: Tuesday 26 September, 2023
Source: Microsoft CVE-2018-0886
Industry Reference:CVE-2018-0886
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Windows 7
Windows RT 8.1
Windows 8.1
Windows 10
Windows 10 Version 1511
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1703 for 32-bit Systems
Windows 10 Version 1703 for x64-based Systems
Windows 10 Version 1709 for 32-bit Systems
Windows 10 Version 1709 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for Itanium-Based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server, version 1709 (Server Core Installation)
Vulnerability Description A remote code execution vulnerability exists in CredSSP. The vulnerability due to how CredSSP validates request during the authentication process. A remote attacker can exploit this vulnerability by sending a specially crafted RDP request to the 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 R81 / R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Microsoft Windows CredSSP MITM Remote Code Execution (CVE-2018-0886) 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:  RDP Enforcement Violation.
Attack Information:  Microsoft Windows CredSSP MITM Remote Code Execution (CVE-2018-0886)

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