CVE-2022-47121 Explained : Impact and Mitigation

A stack overflow vulnerability was discovered in Tenda A15 V15.13.07.13 through the wepkey parameter, potentially allowing attackers to perform remote code execution.

Understanding CVE-2022-47121

This section will provide insights into the impact, technical details, and mitigation strategies related to CVE-2022-47121.

What is CVE-2022-47121?

CVE-2022-47121 refers to a stack overflow vulnerability found in Tenda A15 V15.13.07.13 that can be exploited via the wepkey parameter in the /goform/WifiBasicSet path.

The Impact of CVE-2022-47121

The vulnerability could be exploited by remote attackers to trigger a stack overflow, potentially leading to arbitrary code execution and compromising the affected system.

Technical Details of CVE-2022-47121

In this section, the specific details of the vulnerability, affected systems, and exploitation mechanism will be discussed.

Vulnerability Description

The vulnerability arises due to improper handling of user-supplied input through the wepkey parameter, leading to a stack overflow condition.

Affected Systems and Versions

Tenda A15 V15.13.07.13 is confirmed to be affected by this vulnerability, exposing systems running this version to exploitation.

Exploitation Mechanism

Attackers can exploit the vulnerability by sending a specially crafted request with a malicious payload to the wepkey parameter, overflowing the stack and potentially executing arbitrary code.

Mitigation and Prevention

This section outlines the immediate steps to take and long-term security practices to mitigate the risk posed by CVE-2022-47121.

Immediate Steps to Take

Users are advised to update Tenda A15 firmware to a non-vulnerable version, apply security best practices, and monitor network traffic for any suspicious activity.

Long-Term Security Practices

Implementing network segmentation, restricting access to critical systems, and regularly updating software and security patches can enhance the overall security posture of the environment.

Patching and Updates

Vendor-supplied patches should be applied promptly to remediate the vulnerability and protect systems from potential exploitation.