CVE-2022-26208 : Security Advisory and Response

Totolink A830R, A3100R, A950RG, A800R, A3000RU, and A810R devices have been found to have a command injection vulnerability that allows attackers to execute arbitrary commands.

Understanding CVE-2022-26208

This CVE identifies a command injection vulnerability present in certain Totolink router models.

What is CVE-2022-26208?

The vulnerability exists in the function setWebWlanIdx, specifically in the webWlanIdx parameter of Totolink A830R, A3100R, A950RG, A800R, A3000RU, and A810R devices. Attackers can exploit this flaw to run arbitrary commands.

The Impact of CVE-2022-26208

This vulnerability could lead to unauthorized remote access and control of affected devices, potentially resulting in data breaches or disruptions of network services.

Technical Details of CVE-2022-26208

The technical overview of this vulnerability includes:

Vulnerability Description

The vulnerability allows attackers to execute arbitrary commands through a crafted request.

Affected Systems and Versions

Totolink A830R V5.9c.4729_B20191112, A3100R V4.1.2cu.5050_B20200504, A950RG V4.1.2cu.5161_B20200903, A800R V4.1.2cu.5137_B20200730, A3000RU V5.9c.5185_B20201128, and A810R V4.1.2cu.5182_B20201026 are impacted.

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the webWlanIdx parameter to inject and run malicious commands.

Mitigation and Prevention

To address CVE-2022-26208, consider the following steps:

Immediate Steps to Take

Disable remote management if not needed
Implement network segmentation
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and security patches
Conduct security audits and penetration testing
Educate network users on best security practices

Patching and Updates

Check the Totolink official website for firmware updates and patches to fix the command injection vulnerability.