CVE-2021-32668 : Security Advisory and Response
Learn about CVE-2021-32668, a cross-site scripting vulnerability in TYPO3.CMS versions 9.0.0 to 9.5.28, 10.0.0 to 10.4.17, and 11.0.0 to 11.3.0. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
CVE-2021-32668 is a cross-site scripting vulnerability impacting TYPO3.CMS versions 9.0.0 to 9.5.28, 10.0.0 to 10.4.17, and 11.0.0 to 11.3.0. This vulnerability exists in the components QueryGenerator and QueryView when error messages are improperly encoded.
Understanding CVE-2021-32668
This section provides an overview of what CVE-2021-32668 entails.
What is CVE-2021-32668?
CVE-2021-32668 is a cross-site scripting vulnerability found in TYPO3.CMS versions between 9.0.0 to 9.5.28, 10.0.0 to 10.4.17, and 11.0.0 to 11.3.0. The vulnerability in the QueryGenerator and QueryView components allows for both reflected and persistent cross-site scripting under specific conditions.
The Impact of CVE-2021-32668
The impact of CVE-2021-32668 is rated as 'MEDIUM'. It requires a valid backend user account with administrator privileges to exploit the vulnerability. The affected versions have the potential for high confidentiality and integrity impact.
Technical Details of CVE-2021-32668
This section delves into the technical aspects of CVE-2021-32668.
Vulnerability Description
The vulnerability arises due to improper encoding of error messages in TYPO3.CMS, exposing the QueryGenerator and QueryView components to cross-site scripting attacks.
Affected Systems and Versions
TYPO3.CMS versions 9.0.0 to 9.5.28, 10.0.0 to 10.4.17, and 11.0.0 to 11.3.0 are affected by this vulnerability.
Exploitation Mechanism
Exploiting this vulnerability requires a malicious actor to manipulate error messages to inject and execute malicious scripts.
Mitigation and Prevention
To address CVE-2021-32668, immediate and long-term security measures should be implemented.
Immediate Steps to Take
Users are advised to update their TYPO3.CMS installations to versions 9.5.29, 10.4.18, or 11.3.1 that contain patches for this vulnerability.
Long-Term Security Practices
Maintaining regular updates, implementing secure coding practices, and monitoring for security advisories are essential for improving overall security.
Patching and Updates
Regularly check for security updates and apply patches provided by TYPO3 to mitigate the risk of cross-site scripting vulnerabilities.