CVE-2021-30234 : Exploit Details and Defense Strategies

China Mobile An Lianbao WF-1 router 1.0.1 is affected by CVE-2021-30234, which allows remote attackers to execute arbitrary commands. Here's what you need to know about this vulnerability.

Understanding CVE-2021-30234

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-30234.

What is CVE-2021-30234?

The api/ZRIGMP/set_MLD_PROXY interface in the affected router enables remote attackers to execute arbitrary commands via shell metacharacters in the MLD_PROXY_WAN_CONNECT parameter.

The Impact of CVE-2021-30234

The vulnerability exposes the router to the risk of unauthorized command execution by malicious actors, potentially leading to system compromise and data breaches.

Technical Details of CVE-2021-30234

Let's delve deeper into the specific technical aspects of this vulnerability to understand its implications better.

Vulnerability Description

The flaw in the api/ZRIGMP/set_MLD_PROXY interface allows attackers to inject shell metacharacters in the MLD_PROXY_WAN_CONNECT parameter, providing an avenue for unauthorized command execution.

Affected Systems and Versions

China Mobile An Lianbao WF-1 router version 1.0.1 is confirmed to be impacted by this vulnerability, making systems with this configuration vulnerable to exploitation.

Exploitation Mechanism

Remote threat actors can exploit this vulnerability by sending specially crafted requests to the affected interface, enabling them to execute arbitrary commands on the target device.

Mitigation and Prevention

To safeguard your systems from potential exploitation of CVE-2021-30234, consider the following mitigation strategies and best practices.

Immediate Steps to Take

It is crucial to apply security patches provided by the vendor to address the vulnerability promptly. Additionally, restrict network access to the router to trusted entities only.

Long-Term Security Practices

Implement stringent network access controls, conduct regular security audits, and keep systems updated with the latest security patches to mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

Regularly check for security advisories from the vendor and apply patches as soon as they are released to ensure your systems are protected against known vulnerabilities.