CVE-2021-36707 : Vulnerability Insights and Analysis

In ProLink PRC2402M V1.0.18 and older, a vulnerability exists in the set_ledonoff function in the adm.cgi binary, allowing for a command injection attack when the led_cmd parameter value is passed directly to do_system.

Understanding CVE-2021-36707

This CVE identifies a trivial command injection vulnerability in versions of ProLink PRC2402M V1.0.18 and earlier, posing a security risk for affected systems.

What is CVE-2021-36707?

The vulnerability in ProLink PRC2402M V1.0.18 and older arises from insecure handling of user input, enabling attackers to inject arbitrary commands through the led_cmd parameter.

The Impact of CVE-2021-36707

Exploitation of this vulnerability could lead to unauthorized command execution, potentially compromising the security and integrity of the affected system.

Technical Details of CVE-2021-36707

The technical details of CVE-2021-36707 highlight the specific aspects of the vulnerability.

Vulnerability Description

The vulnerability allows threat actors to execute unauthorized commands by manipulating the led_cmd parameter in the set_ledonoff function of the adm.cgi binary.

Affected Systems and Versions

ProLink PRC2402M V1.0.18 and earlier versions are affected by this vulnerability, exposing systems running these versions to potential exploitation.

Exploitation Mechanism

Attackers can exploit CVE-2021-36707 by crafting malicious input for the led_cmd parameter, which is executed without proper validation, leading to command injection.

Mitigation and Prevention

To address CVE-2021-36707, immediate action and long-term security measures are essential.

Immediate Steps to Take

System administrators should apply security patches or updates provided by ProLink to remediate the vulnerability. It is crucial to restrict access to vulnerable components and monitor for any unauthorized activity.

Long-Term Security Practices

Establishing robust input validation mechanisms and implementing least privilege access can help prevent command injection attacks. Regular security audits and employee training on secure coding practices are also recommended.

Patching and Updates

Keeping systems up to date with the latest software patches and security updates is critical in preventing exploitation of known vulnerabilities such as CVE-2021-36707.