Check Point Advisories

SonicWall Email Security Privilege Escalation (CVE-2021-20021)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1111
Date Published:	6 Apr 2022
Severity:	Critical
Last Updated:	Wednesday 06 April, 2022
Source:
Industry Reference:	CVE-2021-20021
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	SonicWall Email Security version 10.0.9.x
Vulnerability Description	A privilege escalation exists in SonicWall Email Security. Successful exploitation of this vulnerability would allow a remote attacker to gain unauthorized access to 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 Email Security Privilege Escalation (CVE-2021-20021) 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 Email Security Privilege Escalation (CVE-2021-20021)