CVE-2022-35536 Explained : Impact and Mitigation

A command injection vulnerability with CVE ID CVE-2022-35536 has been found in WAVLINK routers, including models WN572HP3, WN533A8, WN530H4, WN535G3, and WN531P3. This vulnerability in the qos.cgi script allows attackers to execute arbitrary commands via the parameters qos_bandwith and qos_dat in the /qos.shtml page.

Understanding CVE-2022-35536

This section will provide an overview of the CVE-2022-35536 vulnerability affecting WAVLINK routers.

What is CVE-2022-35536?

The vulnerability in the qos.cgi script of WAVLINK routers allows threat actors to perform command injections through specific parameters, potentially leading to unauthorized remote code execution.

The Impact of CVE-2022-35536

Exploitation of this vulnerability could result in severe consequences, including unauthorized access, data breaches, and complete compromise of affected routers.

Technical Details of CVE-2022-35536

Let's delve deeper into the technical aspects of CVE-2022-35536 to understand the vulnerability better.

Vulnerability Description

The lack of input validation on the parameters qos_bandwith and qos_dat in the qos.cgi script enables attackers to inject and execute malicious commands on the router.

Affected Systems and Versions

WAVLINK routers models WN572HP3, WN533A8, WN530H4, WN535G3, and WN531P3 are confirmed to be impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted requests containing malicious commands to the vulnerable parameters, potentially gaining unauthorized access.

Mitigation and Prevention

Understanding how to mitigate and prevent the exploitation of CVE-2022-35536 is crucial for ensuring the security of WAVLINK routers.

Immediate Steps to Take

Users are advised to restrict access to the affected web interfaces and consider applying security patches or updates provided by WAVLINK to address the vulnerability.

Long-Term Security Practices

Implementing network segmentation, strong access controls, and regular security audits can contribute to your long-term security posture.

Patching and Updates

Regularly check for and apply firmware updates and security patches released by WAVLINK to mitigate the risk posed by CVE-2022-35536.