Check Point Advisories

Zyxel ZyWALL Command Injection (CVE-2023-28771)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0356
Date Published:	6 Jun 2023
Severity:	Critical
Last Updated:	Wednesday 13 November, 2024
Source:
Industry Reference:	CVE-2023-28771
Protection Provided by:	Security Gateway R81, R80
Who is Vulnerable?	Zyxel ZyWALL USG firmware version 4.60 prior to 4.73 Zyxel ZyWALL VPN firmware version 4.60 prior to 5.35 Zyxel ZyWALL USG FLEX firmware version 4.60 prior to 5.35 Zyxel ZyWALL ATP firmware version 4.60 prior to 5.35
Vulnerability Description	A command injection vulnerability exists in Zyxel ZyWALL. Successful exploitation of this vulnerability would allow remote attackers to execute arbitrary OS commands in the effected 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

In the IPS tab, click Protections and find the Zyxel ZyWALL Command Injection (CVE-2023-28771) 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: Zyxel ZyWALL Command Injection (CVE-2023-28771)