Check Point Advisories

Apache HTTP Server Server-Side Request Forgery (CVE-2021-40438)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-0772
Date Published:	18 Oct 2021
Severity:	Critical
Last Updated:	Tuesday 03 January, 2023
Source:
Industry Reference:	CVE-2021-40438
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Apache HTTP Server 2.4.48 and earlier
Vulnerability Description	A Server Side Request Forgery vulnerability exists in Apache HTTP Server. A remote attacker may exploit this issue by making a specially crafted HTTP request. Successful exploitation would allow attackers to create HTTP requests on behalf of the vulnerable server.

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

In the IPS tab, click Protections and find the Apache HTTP Server Server-Side Request Forgery (CVE-2021-40438) 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: Web Server Enforcement Violation.
Attack Information: Apache HTTP Server Server-Side Request Forgery (CVE-2021-40438)