Check Point Advisories

Tenda W20E Stack Overflow (CVE-2022-40855)

Check Point Reference: CPAI-2022-0859
Date Published: 8 Dec 2022
Severity: Critical
Last Updated: Thursday 08 December, 2022
Source:
Industry Reference:CVE-2022-40855
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Tenda W20E router V15.11.0.6
Vulnerability Description A stack overflow vulnerability exists in Tenda W20E. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.

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

  1. In the IPS tab, click Protections and find the Tenda W20E Stack Overflow (CVE-2022-40855) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  Tenda W20E Stack Overflow (CVE-2022-40855)

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