CVE-2020-5726 Explained : Impact and Mitigation

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.

Understanding CVE-2020-5726

This CVE involves an SQL injection vulnerability in the Grandstream UCM6200 series.

What is CVE-2020-5726?

CVE-2020-5726 is an SQL injection vulnerability in the Grandstream UCM6200 series before version 1.0.20.22, allowing remote unauthenticated attackers to access user passwords.

The Impact of CVE-2020-5726

The vulnerability enables attackers to execute SQL injection attacks via the CTI server on port 8888, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2020-5726

This section provides detailed technical information about the CVE.

Vulnerability Description

Type: SQL Injection (CWE-89)
Description: Vulnerability in the Grandstream UCM6200 series before 1.0.20.22

Affected Systems and Versions

Product: Grandstream UCM6200 series
Versions Affected: 1.0.20.20 and below

Exploitation Mechanism

Attackers can exploit the vulnerability via the CTI server on port 8888 by using a crafted username to access user passwords.

Mitigation and Prevention

Protect your systems from CVE-2020-5726 with the following steps:

Immediate Steps to Take

Update to version 1.0.20.22 or above to patch the vulnerability.
Restrict access to the CTI server to authorized users only.

Long-Term Security Practices

Regularly monitor and audit network traffic for suspicious activities.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Apply security patches and updates promptly to ensure protection against known vulnerabilities.