CVE-2019-19983 : Security Advisory and Response

Fast Velocity Minify WordPress plugin versions prior to 2.7.7 expose the web root path of the active WordPress application when FVM Debug Mode is enabled.

Understanding CVE-2019-19983

This CVE involves a vulnerability in the Fast Velocity Minify WordPress plugin that can lead to the exposure of sensitive information.

What is CVE-2019-19983?

The Fast Velocity Minify WordPress plugin, specifically versions prior to 2.7.7, allows for the identification of the complete web root path of the active WordPress application. To take advantage of this vulnerability, the FVM Debug Mode must be activated, and an admin-ajax request must make use of the fastvelocity_min_files action.

The Impact of CVE-2019-19983

This vulnerability has a CVSS base score of 4.3, indicating a medium severity level. The impact includes low confidentiality impact, no integrity impact, and low privileges required to exploit the vulnerability.

Technical Details of CVE-2019-19983

The technical aspects of the CVE provide insight into the vulnerability and its implications.

Vulnerability Description

The Fast Velocity Minify WordPress plugin, before version 2.7.7, exposes the full web root path of the running WordPress application when specific conditions are met.

Affected Systems and Versions

Product: Fast Velocity Minify WordPress plugin
Vendor: N/A
Versions Affected: Prior to 2.7.7

Exploitation Mechanism

To exploit this vulnerability, the following conditions must be met:

FVM Debug Mode enabled
Admin-ajax request utilizing the fastvelocity_min_files action

Mitigation and Prevention

Addressing and preventing the exploitation of CVE-2019-19983 is crucial for maintaining the security of WordPress installations.

Immediate Steps to Take

Update Fast Velocity Minify plugin to version 2.7.7 or later
Disable FVM Debug Mode if not required
Monitor admin-ajax requests for suspicious activity

Long-Term Security Practices

Regularly update WordPress plugins and themes
Implement least privilege access controls
Conduct security audits and penetration testing

Patching and Updates

Apply patches and updates promptly to mitigate known vulnerabilities