CVE-2021-36705 : What You Need to Know

In ProLink PRC2402M V1.0.18 and older, a vulnerability exists in the set_TR069 function in the adm.cgi binary. An attacker can exploit this to perform a command injection by manipulating the TR069_local_port parameter.

Understanding CVE-2021-36705

This section will delve into the details of CVE-2021-36705, shedding light on its impact, technical aspects, and mitigation strategies.

What is CVE-2021-36705?

The vulnerability in ProLink PRC2402M V1.0.18 and earlier versions allows attackers to execute arbitrary commands through the TR069_local_port parameter in the adm.cgi binary.

The Impact of CVE-2021-36705

This vulnerability can lead to unauthorized command execution, enabling malicious actors to take control of the affected system and potentially compromise sensitive data.

Technical Details of CVE-2021-36705

Let's explore the technical aspects of CVE-2021-36705, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The flaw in the set_TR069 function allows threat actors to inject and execute arbitrary commands by manipulating the TR069_local_port parameter directly within the system.

Affected Systems and Versions

ProLink PRC2402M V1.0.18 and older versions are vulnerable to this exploit, putting these systems at risk of command injections.

Exploitation Mechanism

By tampering with the TR069_local_port parameter in the adm.cgi binary, attackers can pass malicious commands directly to the system, compromising its integrity.

Mitigation and Prevention

Discover the essential steps to mitigate the risks posed by CVE-2021-36705 and prevent potential security breaches.

Immediate Steps to Take

It is crucial to update the ProLink PRC2402M firmware to the latest version that contains patches for the identified vulnerability. Additionally, restricting access to the affected function can help reduce the attack surface.

Long-Term Security Practices

Implementing network segmentation, regularly monitoring system logs for suspicious activities, and conducting security awareness training for users can enhance overall security posture.

Patching and Updates

Stay informed about security advisories from the vendor and promptly apply any patches or updates released to address known vulnerabilities, ensuring a proactive approach to cybersecurity.