CVE-2020-21726 Explained : Impact and Mitigation

OpenSNS v6.1.0 contains a blind SQL injection vulnerability in /Controller/ChinaCityController.class.php via the cid parameter.

Understanding CVE-2020-21726

This CVE identifies a blind SQL injection vulnerability in OpenSNS v6.1.0.

What is CVE-2020-21726?

The vulnerability exists in the ChinaCityController.class.php file of OpenSNS v6.1.0, allowing attackers to execute SQL injection via the cid parameter.

The Impact of CVE-2020-21726

This vulnerability could lead to unauthorized access to sensitive data, data manipulation, and potential data loss.

Technical Details of CVE-2020-21726

The technical aspects of this CVE are as follows:

Vulnerability Description

Type: Blind SQL Injection
Location: /Controller/ChinaCityController.class.php
Parameter: cid

Affected Systems and Versions

Product: OpenSNS
Version: v6.1.0

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting malicious SQL queries through the cid parameter, potentially gaining unauthorized access to the database.

Mitigation and Prevention

To address CVE-2020-21726, follow these mitigation steps:

Immediate Steps to Take

Disable or sanitize user inputs to prevent SQL injection attacks.
Regularly monitor and review database logs for any suspicious activities.

Long-Term Security Practices

Implement input validation and parameterized queries to mitigate SQL injection vulnerabilities.
Keep software and systems up to date with the latest security patches.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Educate developers and users on secure coding practices.

Patching and Updates

Apply patches or updates provided by the software vendor to fix the SQL injection vulnerability in OpenSNS v6.1.0.