CVE-2019-16698 : Security Advisory and Response

The TYPO3 extension direct_mail version 5.2.2 has a vulnerability that allows unauthorized access to frontend user data.

Understanding CVE-2019-16698

This CVE involves a missing access check in the direct_mail extension for TYPO3, potentially exposing sensitive user information.

What is CVE-2019-16698?

The direct_mail extension in TYPO3 up to version 5.2.2 lacks proper access controls, enabling users with limited permissions to view and export data of frontend users subscribed to newsletters.

The Impact of CVE-2019-16698

This vulnerability could lead to unauthorized access to sensitive user data, compromising user privacy and potentially exposing personal information.

Technical Details of CVE-2019-16698

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The direct_mail extension in TYPO3 version 5.2.2 fails to enforce access restrictions in the backend module, allowing unauthorized users to access frontend user data.

Affected Systems and Versions

Product: TYPO3
Version: direct_mail extension up to 5.2.2

Exploitation Mechanism

Unauthorized users with restricted permissions to the fe_users table can exploit this vulnerability to access and export data of frontend users subscribed to newsletters.

Mitigation and Prevention

To address CVE-2019-16698, consider the following mitigation strategies:

Immediate Steps to Take

Update the direct_mail extension to the latest secure version.
Restrict access to sensitive user data within the TYPO3 backend.

Long-Term Security Practices

Regularly review and update access control policies within TYPO3.
Educate users on data privacy and security best practices.

Patching and Updates

Apply security patches promptly to ensure the direct_mail extension is up to date with the latest security fixes.