CVE-2022-40868 : Security Advisory and Response

This article provides details about CVE-2022-40868, a stack overflow vulnerability found in Tenda W20E router V15.11.0.6. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2022-40868

CVE-2022-40868 is a vulnerability identified in Tenda W20E router V15.11.0.6, specifically in the function formDelDhcpRule with the request /goform/delDhcpRules/.

What is CVE-2022-40868?

The CVE-2022-40868 vulnerability is a stack overflow vulnerability that allows attackers to potentially execute arbitrary code on affected devices, posing a significant security risk.

The Impact of CVE-2022-40868

This vulnerability can be exploited by malicious actors to compromise the security and integrity of the Tenda W20E router V15.11.0.6, leading to unauthorized access and potential data breaches.

Technical Details of CVE-2022-40868

The technical details of CVE-2022-40868 include:

Vulnerability Description

The stack overflow vulnerability occurs in the function formDelDhcpRule with the request /goform/delDhcpRules/, allowing for potential remote code execution.

Affected Systems and Versions

Tenda W20E router V15.11.0.6 is confirmed to be affected by this vulnerability, potentially exposing all devices running this version to exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted requests to the affected router, triggering the stack overflow condition and gaining unauthorized access.

Mitigation and Prevention

Understanding the severity of CVE-2022-40868, it is crucial to take immediate action to secure impacted devices.

Immediate Steps to Take

Disable remote management of the router if not required.
Regularly monitor network traffic for any suspicious activity.

Long-Term Security Practices

Keep router firmware up to date to ensure patches for known vulnerabilities are applied.
Implement strong network segregation and access controls to limit exposure to potential attacks.

Patching and Updates

Check with Tenda for any available patches or firmware updates that address CVE-2022-40868 and apply them promptly to mitigate the vulnerability.