CVE-2022-36108 : Security Advisory and Response

A detailed overview of the Cross-Site Scripting vulnerability in typo3/cms-core affecting TYPO3 versions 10.3.0 to 10.4.32 and 11.0.0 to 11.5.16.

Understanding CVE-2022-36108

This CVE details a cross-site scripting vulnerability in TYPO3's CMS core, impacting versions 10.3.0 to 10.4.32 and 11.0.0 to 11.5.16.

What is CVE-2022-36108?

The vulnerability lies in the

f:asset.css

view helper in TYPO3, allowing for cross-site scripting when user input is used as variables in the CSS.

The Impact of CVE-2022-36108

With a CVSS base score of 6.5 (Medium Severity), this vulnerability could result in unauthorized script execution and potential data manipulation.

Technical Details of CVE-2022-36108

In-depth technical insights into the vulnerability and its implications.

Vulnerability Description

The vulnerability in TYPO3's

f:asset.css

view helper enables malicious actors to execute cross-site scripting attacks by injecting code into CSS variables.

Affected Systems and Versions

TYPO3 versions 10.3.0 to 10.4.32 and 11.0.0 to 11.5.16 are confirmed to be affected by this vulnerability.

Exploitation Mechanism

Exploitation involves crafting malicious inputs that get processed as part of CSS variables, leading to the execution of arbitrary scripts.

Mitigation and Prevention

Key steps to mitigate the risk and prevent exploitation of CVE-2022-36108 in TYPO3.

Immediate Steps to Take

Update TYPO3 to versions 10.4.32 or 11.5.16, which contain fixes for the cross-site scripting vulnerability in the

f:asset.css

view helper.

Long-Term Security Practices

Implement input validation mechanisms, security best practices, and continuous monitoring to safeguard against similar vulnerabilities.

Patching and Updates

Regularly apply security patches and updates provided by TYPO3 to ensure the CMS remains protected against known vulnerabilities.