CVE-2021-45742 : Vulnerability Insights and Analysis

TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a command injection vulnerability in the "Main" function. This vulnerability allows attackers to execute arbitrary commands via the QUERY_STRING parameter.

Understanding CVE-2021-45742

This CVE identifies a command injection vulnerability in TOTOLINK A720R v4.1.5cu.470_B20200911.

What is CVE-2021-45742?

The CVE-2021-45742 CVE record relates to a specific vulnerability in TOTOLINK A720R, allowing malicious actors to execute unauthorized commands using the QUERY_STRING parameter.

The Impact of CVE-2021-45742

The exploitation of this vulnerability could lead to unauthorized command execution on affected systems, potentially resulting in unauthorized access or further compromise of the targeted system.

Technical Details of CVE-2021-45742

This section provides specific technical details regarding the CVE.

Vulnerability Description

The vulnerability exists in the "Main" function of TOTOLINK A720R v4.1.5cu.470_B20200911, enabling threat actors to execute arbitrary commands through the QUERY_STRING parameter.

Affected Systems and Versions

Affected Product: TOTOLINK A720R v4.1.5cu.470_B20200911
Affected Version: Not Applicable

Exploitation Mechanism

The vulnerability allows attackers to inject malicious commands via the QUERY_STRING parameter, leading to the execution of unauthorized commands.

Mitigation and Prevention

Protective measures and steps to mitigate the impact of CVE-2021-45742.

Immediate Steps to Take

It is recommended to restrict access to vulnerable devices to trusted entities only.
Implement firewall rules to filter and sanitize incoming requests, especially those containing parameters susceptible to injection attacks.

Long-Term Security Practices

Regularly monitor and update all network-connected devices to address known vulnerabilities promptly.
Conduct security audits and penetration testing to uncover and address potential security weaknesses.

Patching and Updates

Vendor patches or updates should be applied as soon as they are made available to mitigate the vulnerability effectively.