CVE-2021-30230 : What You Need to Know
Learn about CVE-2021-30230, a command injection vulnerability in China Mobile An Lianbao WF-1 router 1.0.1 that allows remote attackers to execute arbitrary commands. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
The api/ZRFirmware/set_time_zone interface in China Mobile An Lianbao WF-1 router 1.0.1 has a vulnerability that allows remote attackers to execute arbitrary commands using shell metacharacters in the zonename parameter.
Understanding CVE-2021-30230
This CVE entry describes a command injection vulnerability in the China Mobile An Lianbao WF-1 router 1.0.1 that enables attackers to run arbitrary commands remotely.
What is CVE-2021-30230?
The api/ZRFirmware/set_time_zone interface in the router allows attackers to execute unauthorized commands by exploiting shell metacharacters in the zonename parameter.
The Impact of CVE-2021-30230
The exploit permits remote attackers to gain unauthorized access and control over the affected router, potentially leading to data theft, network compromise, and other malicious activities.
Technical Details of CVE-2021-30230
This section provides an overview of the vulnerability's technical aspects.
Vulnerability Description
The vulnerability arises from improper input validation in the zonename parameter of the api/ZRFirmware/set_time_zone interface, which can be exploited by attackers to inject and execute arbitrary commands.
Affected Systems and Versions
The vulnerability affects China Mobile An Lianbao WF-1 router version 1.0.1.
Exploitation Mechanism
Attackers can exploit the vulnerability by injecting malicious shell metacharacters into the zonename parameter of the affected router, leading to command execution.
Mitigation and Prevention
Protecting systems from CVE-2021-30230 requires immediate action and long-term security practices.
Immediate Steps to Take
- Disable remote access to the router if not necessary.
- Apply security patches provided by the vendor.
- Implement network segmentation to limit the router's exposure.
Long-Term Security Practices
- Regularly update router firmware to the latest version.
- Conduct security audits and penetration testing on network devices.
Patching and Updates
Vendor-supplied patches must be promptly applied to eliminate the vulnerability and enhance the security of the router.