CVE-2021-41750 : What You Need to Know
Learn about CVE-2021-41750, a cross-site scripting vulnerability in SEOmatic plugin 3.4.10 for Craft CMS 3. Explore its impact, technical details, affected systems, and mitigation steps.
A detailed overview of CVE-2021-41750, a cross-site scripting vulnerability in the SEOmatic plugin 3.4.10 for Craft CMS 3.
Understanding CVE-2021-41750
This section provides insights into the nature of the vulnerability.
What is CVE-2021-41750?
CVE-2021-41750 is a cross-site scripting (XSS) vulnerability present in the SEOmatic plugin 3.4.10 for Craft CMS 3. This vulnerability allows remote attackers to inject arbitrary web scripts.
The Impact of CVE-2021-41750
The presence of this vulnerability could enable attackers to inject malicious web scripts, potentially compromising the security and integrity of the affected system.
Technical Details of CVE-2021-41750
Exploring the specific technical aspects of the vulnerability.
Vulnerability Description
The vulnerability exists in the SEOmatic plugin 3.4.10 for Craft CMS 3, specifically through a GET request to /index.php?action=seomatic/file/seo-file-link. Attackers can inject arbitrary web scripts via the url parameter, which contains the base64 encoded URL of a malicious web page/file, and the fileName parameter, which specifies an arbitrary filename with the intended content-type for rendering in the user's browser.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions Affected: 3.4.10
Exploitation Mechanism
Attackers exploit this vulnerability by sending a GET request to a specific URL with crafted parameters, allowing them to inject malicious scripts into the web page.
Mitigation and Prevention
Understanding how to mitigate the risks associated with CVE-2021-41750.
Immediate Steps to Take
- Upgrade the SEOmatic plugin to a non-vulnerable version.
- Implement input validation mechanisms to prevent script injection.
- Monitor and filter input parameters for potentially malicious content.
Long-Term Security Practices
- Regularly audit and update third-party plugins for security patches.
- Educate developers on secure coding practices to prevent XSS vulnerabilities.
Patching and Updates
Ensure timely application of security patches and updates to the SEOmatic plugin to mitigate the risk of XSS attacks.