CVE-2021-45990 : What You Need to Know

Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a command injection vulnerability that allows attackers to execute arbitrary commands via the pic_name parameter.

Understanding CVE-2021-45990

This CVE involves a command injection vulnerability in Tenda routers G1 and G3.

What is CVE-2021-45990?

The vulnerability in Tenda routers G1 and G3 allows attackers to run arbitrary commands through the uploadPicture function.

The Impact of CVE-2021-45990

This vulnerability could enable malicious actors to gain unauthorized access to the routers, compromising the security and integrity of the network.

Technical Details of CVE-2021-45990

This section provides in-depth technical information about the vulnerability.

Vulnerability Description

The command injection vulnerability in Tenda routers G1 and G3 occurs in the uploadPicture function, permitting the execution of arbitrary commands.

Affected Systems and Versions

Affected systems: Tenda routers G1 and G3
Affected version: v15.11.0.17(9502)_CN

Exploitation Mechanism

Attackers exploit this vulnerability by manipulating the pic_name parameter to inject and execute malicious commands.

Mitigation and Prevention

Protecting against and addressing the CVE-2021-45990 vulnerability is crucial.

Immediate Steps to Take

Disable remote administration of the routers if not required
Implement strong and unique passwords for router access

Long-Term Security Practices

Regularly update router firmware to patch known vulnerabilities
Monitor network traffic for any suspicious activities

Patching and Updates

Ensure timely installation of security patches provided by Tenda to address the command injection vulnerability.