CVE-2021-36706 Explained : Impact and Mitigation

ProLink PRC2402M V1.0.18 and older versions are affected by a trivial command injection vulnerability in the set_sys_cmd function of the adm.cgi binary. This vulnerability allows an attacker to execute arbitrary commands by passing malicious inputs to the system via the sysCMD parameter.

Understanding CVE-2021-36706

This section provides insights into the nature and impact of the vulnerability.

What is CVE-2021-36706?

The CVE-2021-36706 vulnerability exists in ProLink PRC2402M V1.0.18 and older versions due to improper input validation, allowing attackers to manipulate system commands.

The Impact of CVE-2021-36706

The vulnerability enables threat actors to execute unauthorized commands on the affected systems, potentially leading to complete compromise of the device and unauthorized access to sensitive information.

Technical Details of CVE-2021-36706

Explore the specifics of the vulnerability to better understand its implications.

Vulnerability Description

The flaw arises from the lack of input sanitization in the set_sys_cmd function, enabling command injection via the sysCMD parameter.

Affected Systems and Versions

ProLink PRC2402M V1.0.18 and older versions are confirmed to be impacted by this vulnerability.

Exploitation Mechanism

By sending crafted input to the sysCMD parameter in the adm.cgi binary, threat actors can execute arbitrary commands on the system.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-36706 and prevent potential exploitation.

Immediate Steps to Take

Immediately update to a patched version of the ProLink PRC2402M firmware to eliminate the vulnerability.

Long-Term Security Practices

Implement strict input validation mechanisms and regular security audits to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for firmware updates from the vendor to address security issues and apply patches promptly.