CVE-2022-25136 Explained : Impact and Mitigation

A command injection vulnerability in TOTOLINK Technology routers T6 V3 and T10 V2 allows attackers to execute arbitrary commands via a crafted MQTT packet.

Understanding CVE-2022-25136

This CVE-2022-25136 identifies a critical command injection vulnerability in specific TOTOLINK routers, potentially enabling attackers to run arbitrary commands through a malicious MQTT packet.

What is CVE-2022-25136?

The CVE-2022-25136 refers to a flaw present in the meshSlaveUpdate function of TOTOLINK Technology routers T6 V3 and T10 V2. This vulnerability allows threat actors to execute unauthorized commands leveraging a meticulously created MQTT packet.

The Impact of CVE-2022-25136

Exploitation of this vulnerability can lead to severe consequences, including unauthorized access to the routers, manipulation of network configurations, and potential compromise of the entire network connected to the affected devices.

Technical Details of CVE-2022-25136

This section delves into the technical aspects associated with CVE-2022-25136.

Vulnerability Description

The vulnerability resides in the function meshSlaveUpdate of TOTOLINK routers T6 V3 and T10 V2. Attackers can exploit this flaw by sending specifically crafted MQTT packets to execute arbitrary commands on the affected devices.

Affected Systems and Versions

TOTOLINK routers T6 V3 with firmware version T6_V3_V4.1.5cu.748_B20211015 and T10 V2 with firmware version V4.1.8cu.5207_B20210320 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by sending a malicious MQTT packet to the routers' meshSlaveUpdate function, allowing threat actors to execute unauthorized commands remotely.

Mitigation and Prevention

To address CVE-2022-25136 and enhance your network security, consider applying the following measures:

Immediate Steps to Take

Disable remote management access to the routers if not needed.
Implement strong and unique passwords for router access.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update router firmware to the latest version.
Configure firewalls to restrict unauthorized access.
Conduct security audits to identify and mitigate vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by TOTOLINK for your routers. Apply updates promptly to safeguard against known vulnerabilities.