CVE-2020-25768 : Security Advisory and Response

Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation, allowing for insert tag injection in front end forms.

Understanding CVE-2020-25768

This CVE involves a vulnerability in Contao versions that could be exploited through insert tag injection in front end forms.

What is CVE-2020-25768?

CVE-2020-25768 refers to the improper input validation issue in Contao versions before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1, enabling the injection of insert tags in front end forms.

The Impact of CVE-2020-25768

This vulnerability allows attackers to inject malicious insert tags, which are then executed when the page is rendered, potentially leading to various security risks.

Technical Details of CVE-2020-25768

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

Contao versions prior to 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 lack proper input validation, enabling the injection of insert tags in front end forms.

Affected Systems and Versions

Contao versions before 4.4.52
Contao 4.9.x before 4.9.6
Contao 4.10.x before 4.10.1

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting insert tags into front end forms, which are then processed and executed when the page is rendered.

Mitigation and Prevention

Protecting systems from CVE-2020-25768 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Contao to versions 4.4.52, 4.9.6, or 4.10.1, which contain fixes for this vulnerability.
Monitor and review front end forms for any suspicious insert tags.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent similar injection attacks.
Educate users on safe form submission practices to avoid inadvertent execution of malicious insert tags.

Patching and Updates

Regularly update Contao to the latest versions to ensure that security patches are applied promptly.