CVE-2021-42575 : What You Need to Know
Learn about CVE-2021-42575, a vulnerability in OWASP Java HTML Sanitizer before 20211018.1 affecting SELECT, STYLE, and OPTION elements. Find mitigation strategies and steps to protect your system.
The OWASP Java HTML Sanitizer before 20211018.1 has vulnerabilities related to the SELECT, STYLE, and OPTION elements.
Understanding CVE-2021-42575
This CVE involves security issues in the OWASP Java HTML Sanitizer that result in inadequate enforcement of policies for specific HTML elements.
What is CVE-2021-42575?
The OWASP Java HTML Sanitizer version before 20211018.1 fails to apply proper policies for the SELECT, STYLE, and OPTION HTML elements, leaving the system vulnerable to exploitation.
The Impact of CVE-2021-42575
The vulnerability allows attackers to potentially bypass security measures and execute malicious code by leveraging the inadequately sanitized SELECT, STYLE, and OPTION elements.
Technical Details of CVE-2021-42575
The technical aspects of the CVE highlight the specific details of the vulnerability.
Vulnerability Description
The OWASP Java HTML Sanitizer before 20211018.1 lacks robust policy enforcement for the SELECT, STYLE, and OPTION elements, leading to potential security breaches.
Affected Systems and Versions
- Affected Version: OWASP Java HTML Sanitizer before 20211018.1
- All versions prior to 20211018.1 are susceptible to this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious input utilizing the affected SELECT, STYLE, and OPTION elements to execute unauthorized actions.
Mitigation and Prevention
Protect your system from CVE-2021-42575 by following these security measures.
Immediate Steps to Take
- Update the OWASP Java HTML Sanitizer to version 20211018.1 or newer.
- Implement strict input validation to mitigate the risk of code injection.
Long-Term Security Practices
- Regularly scan and test your applications for vulnerabilities.
- Educate developers on secure coding practices to prevent similar issues.
Patching and Updates
- Stay informed about security patches released by OWASP for the Java HTML Sanitizer.
- Apply timely updates and patches to ensure your system is protected from known vulnerabilities.