CVE-2018-6393 : Security Advisory and Response

FreePBX versions 10.13.66-32bit and 14.0.1.24 have a disputed vulnerability allowing post-authentication SQL injection. The vendor claims this is intentional to grant users direct SQL table modification and shell script execution.

Understanding CVE-2018-6393

This CVE involves a controversial SQL injection vulnerability in FreePBX versions 10.13.66-32bit and 14.0.1.24.

What is CVE-2018-6393?

The versions mentioned have a vulnerability that permits SQL injection post authentication. The vendor argues this is deliberate to enable users to modify SQL tables and run shell scripts directly after logging into the administration interface.

The Impact of CVE-2018-6393

The disputed nature of this vulnerability raises concerns about intentional design choices that could potentially lead to unauthorized access and manipulation of data.

Technical Details of CVE-2018-6393

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows for SQL injection after authentication, providing users with the ability to directly modify SQL tables and run shell scripts without the need for input validation.

Affected Systems and Versions

FreePBX versions 10.13.66-32bit and 14.0.1.24

Exploitation Mechanism

The vulnerability can be exploited post-authentication by injecting SQL commands through the order parameter.

Mitigation and Prevention

Protecting systems from CVE-2018-6393 is crucial to prevent unauthorized access and data manipulation.

Immediate Steps to Take

Monitor vendor updates and security advisories regularly.
Implement strict access controls and authentication mechanisms.
Consider limiting user privileges to minimize the impact of potential exploitation.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on secure coding practices and the risks of SQL injection vulnerabilities.

Patching and Updates

Apply vendor-recommended patches and updates promptly to address the vulnerability and enhance system security.