CVE-2020-18331 Explained : Impact and Mitigation

This CVE record pertains to a directory traversal vulnerability found in the ChinaMobile PLC Wireless Router model GPN2.4P21-C-CN.

Understanding CVE-2020-18331

This vulnerability allows attackers to exploit the router via the getpage parameter in /cgi-bin/webproc.

What is CVE-2020-18331?

The CVE-2020-18331 vulnerability is a directory traversal issue in the ChinaMobile PLC Wireless Router model GPN2.4P21-C-CN, affecting the firmware version W2000EN-01.

The Impact of CVE-2020-18331

This vulnerability could potentially allow unauthorized access to sensitive files and data on the affected router, leading to information disclosure and potential system compromise.

Technical Details of CVE-2020-18331

The following are technical details regarding this CVE:

Vulnerability Description

The vulnerability arises from improper input validation in the getpage parameter of the router's web interface, enabling attackers to navigate directories and access unauthorized files.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: n/a (status: affected)

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the getpage parameter in the /cgi-bin/webproc path to traverse directories and access restricted files.

Mitigation and Prevention

To address CVE-2020-18331, consider the following steps:

Immediate Steps to Take

Disable remote access to the router's web interface if not required.
Implement strong access controls and authentication mechanisms.
Regularly monitor and audit network traffic for any suspicious activities.

Long-Term Security Practices

Keep router firmware up to date with the latest security patches.
Conduct regular security assessments and penetration testing on the network infrastructure.

Patching and Updates

Check for firmware updates from the router manufacturer and apply patches promptly to mitigate the vulnerability.