Check Point Advisories

HTTP User Agent Remote Code Execution

Check Point Reference: CPAI-2022-0281
Date Published: 8 Jun 2022
Severity: Critical
Last Updated: Tuesday 23 August, 2022
Source:
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable?
Vulnerability Description HTTP headers let the client and the server pass arbitrary information with an HTTP request User Agent field. A remote attacker may use the User Agent header to run arbitrary code on an affected 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 HTTP User Agent Remote Code Execution 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 Server Enforcement Violation.
Attack Information:  HTTP User Agent Remote Code Execution

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