CVE-2019-7739 : Exploit Details and Defense Strategies

Joomla! version earlier than 3.9.3 has a vulnerability related to the text filter behavior in the Global Configuration.

Understanding CVE-2019-7739

A problem has been identified in Joomla! version earlier than 3.9.3 where the text filter called "No Filtering" can override the settings of its sub-elements in the Global Configuration, potentially surprising users due to lack of explanation.

What is CVE-2019-7739?

This CVE relates to an issue in Joomla! versions prior to 3.9.3 where the behavior of the "No Filtering" text filter can lead to unexpected outcomes for users.

The Impact of CVE-2019-7739

The vulnerability could confuse users as the intended behavior of the text filter may not be clearly communicated in the configuration dialog.

Technical Details of CVE-2019-7739

Vulnerability Description

The "No Filtering" text filter in Joomla! versions before 3.9.3 can override child settings in the Global Configuration, potentially causing confusion.

Affected Systems and Versions

Affected Version: Joomla! versions earlier than 3.9.3

Exploitation Mechanism

Attackers could potentially exploit this vulnerability to mislead users due to the lack of clear explanation in the configuration dialog.

Mitigation and Prevention

Immediate Steps to Take

Update Joomla! to version 3.9.3 or later to mitigate the vulnerability.
Educate users about the behavior of the text filter to prevent confusion.

Long-Term Security Practices

Regularly update Joomla! and other software to address security issues promptly.

Patching and Updates

Stay informed about security advisories and apply patches as soon as they are available.