CVE-2021-36787 : Vulnerability Insights and Analysis
Learn about CVE-2021-36787, a cross-site scripting vulnerability in femanager extension for TYPO3. Find out the impact, affected versions, and mitigation steps.
The femanager extension before 5.5.1 and 6.x before 6.3.1 for TYPO3 has a cross-site scripting (XSS) vulnerability via a crafted SVG document.
Understanding CVE-2021-36787
This CVE involves a security issue in the femanager extension for TYPO3 that could allow malicious actors to carry out XSS attacks.
What is CVE-2021-36787?
The vulnerability in the femanager extension before versions 5.5.1 and 6.3.1 in TYPO3 permits XSS attacks through a specifically manipulated SVG file.
The Impact of CVE-2021-36787
This security flaw could lead to unauthorized execution of scripts by threat actors, potentially compromising the integrity and confidentiality of user data.
Technical Details of CVE-2021-36787
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises due to improper handling of SVG documents by the femanager extension, allowing attackers to insert and execute malicious scripts.
Affected Systems and Versions
The issue impacts TYPO3 instances using femanager versions prior to 5.5.1 and 6.3.1.
Exploitation Mechanism
Malicious actors can exploit this vulnerability by uploading a specially crafted SVG document, triggering the XSS payload execution.
Mitigation and Prevention
Taking immediate action to mitigate the vulnerability is crucial to prevent exploitation.
Immediate Steps to Take
Users are advised to update the femanager extension to versions 5.5.1 or 6.3.1 to address the XSS vulnerability. Additionally, avoid uploading untrusted SVG files.
Long-Term Security Practices
Regularly update TYPO3 extensions and maintain awareness of security advisories to stay protected against emerging threats.
Patching and Updates
Stay informed about security updates released by TYPO3 and promptly apply patches to eliminate known vulnerabilities.