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Check Point Advisories

HomeMatic Remote Code Execution (CVE-2021-33032)

Check Point Reference: CPAI-2021-0540
Date Published: 13 Oct 2021
Severity: Critical
Last Updated: 13 Oct 2021
Source:
Industry Reference:CVE-2021-33032
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? HomeMatic CCU2 firmware through 2.57.5, HomeMatic CCU3 firmware through 3.57.5.
Vulnerability Description A remote code execution vulnerability exists in Homematic. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.

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

  1. In the IPS tab, click Protections and find the HomeMatic Remote Code Execution (CVE-2021-33032) 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:  Web Client Enforcement Violation.
Attack Information:  HomeMatic Remote Code Execution (CVE-2021-33032)

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