CVE-2020-15241 Explained : Impact and Mitigation

TYPO3 Fluid Engine (package

typo3fluid/fluid

) before versions 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5, or 2.6.1 is vulnerable to cross-site scripting when using the ternary conditional operator in templates. This vulnerability affects TYPO3 versions 8.7.25 and 9.5.6.

Understanding CVE-2020-15241

TYPO3 Fluid Engine is susceptible to cross-site scripting due to improper input validation.

What is CVE-2020-15241?

This CVE identifies a security flaw in TYPO3 Fluid Engine that allows attackers to execute malicious scripts in the context of a user's browser.

The Impact of CVE-2020-15241

The vulnerability can lead to unauthorized access, data theft, and potential manipulation of content on affected websites.

Technical Details of CVE-2020-15241

TYPO3 Fluid Engine's vulnerability is detailed below:

Vulnerability Description

The issue arises from improper handling of user input, specifically when using the ternary conditional operator in templates.

Affected Systems and Versions

TYPO3 Fluid versions before 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5, and 2.6.1
TYPO3 versions 8.7.25 and 9.5.6

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into templates using the ternary conditional operator.

Mitigation and Prevention

Protect your systems from CVE-2020-15241 with the following measures:

Immediate Steps to Take

Update TYPO3 Fluid Engine to versions 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5, or 2.6.1
Apply patches provided by TYPO3 to fix the vulnerability

Long-Term Security Practices

Regularly monitor and update all software components
Educate developers on secure coding practices

Patching and Updates

Stay informed about security advisories from TYPO3
Implement timely updates and patches to address known vulnerabilities