CVE-2019-6264 : Exploit Details and Defense Strategies

A vulnerability was found in Joomla! version 3.9.2 and earlier, specifically in mod_banners, where inadequate escaping could result in a stored cross-site scripting (XSS) vulnerability.

Understanding CVE-2019-6264

This CVE entry describes a stored XSS vulnerability in Joomla! versions prior to 3.9.2, specifically in the mod_banners component.

What is CVE-2019-6264?

CVE-2019-6264 is a security vulnerability in Joomla! that allows attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions.

The Impact of CVE-2019-6264

The vulnerability could be exploited by attackers to perform various malicious activities, such as stealing sensitive information, session hijacking, or defacing websites.

Technical Details of CVE-2019-6264

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

Inadequate escaping in the mod_banners component of Joomla! versions before 3.9.2 allows for the storage of malicious scripts, leading to a stored XSS vulnerability.

Affected Systems and Versions

Affected Version: Joomla! version 3.9.2 and earlier
Component: mod_banners

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the mod_banners component, which are then executed when a user interacts with the affected content.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-6264.

Immediate Steps to Take

Update Joomla! to version 3.9.2 or later to patch the vulnerability.
Regularly monitor and audit the website for any suspicious activities.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Educate developers and administrators on secure coding practices.

Patching and Updates

Apply security patches and updates promptly to ensure the protection of your Joomla! installation.