CVE-2019-19850 : What You Need to Know

A vulnerability was found in versions prior to TYPO3 8.7.30, 9.x before 9.5.12, and 10.x before 10.2.2, allowing potential SQL injection attacks through mishandling of escaping user-submitted content.

Understanding CVE-2019-19850

This CVE identifies a security flaw in TYPO3 versions that could lead to SQL injection attacks.

What is CVE-2019-19850?

This CVE pertains to a vulnerability in TYPO3 versions prior to 8.7.30, 9.x before 9.5.12, and 10.x before 10.2.2, where the mishandling of escaping user-submitted content in the class QueryGenerator exposes it to potential SQL injection attacks.

The Impact of CVE-2019-19850

The vulnerability could be exploited if the system extension ext:lowlevel is installed, and a backend user with administrator privileges exists.

Technical Details of CVE-2019-19850

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from the mishandling of escaping user-submitted content in the class QueryGenerator, making it susceptible to SQL injection attacks.

Affected Systems and Versions

TYPO3 versions prior to 8.7.30
TYPO3 9.x before 9.5.12
TYPO3 10.x before 10.2.2

Exploitation Mechanism

To exploit this vulnerability, the system extension ext:lowlevel must be installed, and a backend user with administrator privileges is required.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial.

Immediate Steps to Take

Update TYPO3 to versions 8.7.30, 9.5.12, or 10.2.2 to mitigate the risk.
Ensure the ext:lowlevel system extension is up to date.

Long-Term Security Practices

Regularly monitor and audit user-submitted content handling.
Implement the principle of least privilege for backend users.

Patching and Updates

Apply security patches promptly to address known vulnerabilities.