Check Point Advisories

Tenda AX3 Router Buffer Overflow (CVE-2021-46393; CVE-2021-46394)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1148
Date Published:	30 Mar 2022
Severity:	Critical
Last Updated:	Wednesday 30 March, 2022
Source:
Industry Reference:	CVE-2021-46393 CVE-2021-46394
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Tenda AX3 Router V16.03.12.10_CN
Vulnerability Description	A stack buffer overflow vulnerability exists in Tenda AX3 Router. Successful exploitation of this vulnerability could result in a remote code execution with carefully crafted overflow data.

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 Tenda AX3 Router Buffer Overflow (CVE-2021-46393) 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: Application Servers Protection Violation.
Attack Information: Tenda AX3 Router Buffer Overflow (CVE-2021-46393)