Check Point Advisories

SonicWall SMA Directory Traversal (CVE-2021-20040)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-2131
Date Published:	13 Mar 2024
Severity:	High
Last Updated:	Wednesday 13 March, 2024
Source:
Industry Reference:	CVE-2021-20040
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	SonicWall Sma 200 Firmware 10.2.0.8-37sv SonicWall Sma 200 Firmware 10.2.1.1-19sv
Vulnerability Description	A directory traversal vulnerability exists in SonicWall Sma 200 Firmware. Successful exploitation of this vulnerability would allow a remote attacker to list directories 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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the SonicWall SMA Directory Traversal (CVE-2021-20040) 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: SonicWall SMA Directory Traversal (CVE-2021-20040)