CVE-2021-33963 : Security Advisory and Response

China Mobile An Lianbao WF-1 router with version 1.0.1 is susceptible to a command injection vulnerability through the /api/ZRMacClone/mac_addr_clone endpoint. Attackers can exploit this flaw to remotely execute commands.

Understanding CVE-2021-33963

This section will delve into what CVE-2021-33963 entails, its impact, technical details, mitigation, and prevention strategies.

What is CVE-2021-33963?

The vulnerability exists in the web interface of China Mobile An Lianbao WF-1 v1.0.1 router, allowing attackers to execute arbitrary commands remotely.

The Impact of CVE-2021-33963

The command injection vulnerability in the router's web interface poses a significant risk as threat actors can exploit it to gain unauthorized access and execute malicious commands.

Technical Details of CVE-2021-33963

Let's explore the technical aspects of the CVE-2021-33963 vulnerability.

Vulnerability Description

The vulnerability occurs in the macType parameter of the /api/ZRMacClone/mac_addr_clone endpoint, enabling remote command execution.

Affected Systems and Versions

The issue impacts China Mobile An Lianbao WF-1 routers running version 1.0.1.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted POST requests with malicious parameters to the specified endpoint.

Mitigation and Prevention

Discover the strategies to mitigate and prevent exploitation of CVE-2021-33963.

Immediate Steps to Take

Ensure access controls are in place, restrict network access to vulnerable devices, and monitor for any suspicious activities.

Long-Term Security Practices

Regularly update router firmware, apply security patches, conduct security assessments, and educate users on safe online practices.

Patching and Updates

Stay informed about security updates released by the vendor, promptly apply patches to eliminate the vulnerability and enhance the router's security.