CVE-2017-12617 : Vulnerability Insights and Analysis
Learn about CVE-2017-12617, a remote code execution vulnerability in Apache Tomcat versions 7.0.0 to 9.0.0. Find out the impact, affected systems, exploitation method, and mitigation steps.
Apache Tomcat Remote Code Execution Vulnerability
Understanding CVE-2017-12617
What is CVE-2017-12617?
Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46, and 7.0.0 to 7.0.81 were vulnerable to remote code execution through specially crafted HTTP PUT requests.
The Impact of CVE-2017-12617
This vulnerability allowed attackers to upload a JSP file to the server, enabling the execution of arbitrary code on the affected system.
Technical Details of CVE-2017-12617
Vulnerability Description
The flaw in Apache Tomcat versions mentioned above allowed for unauthorized JSP file uploads, leading to remote code execution.
Affected Systems and Versions
- Apache Tomcat 9.0.0.M1 to 9.0.0
- Apache Tomcat 8.5.0 to 8.5.22
- Apache Tomcat 8.0.0.RC1 to 8.0.46
- Apache Tomcat 7.0.0 to 7.0.81
Exploitation Mechanism
Attackers could exploit this vulnerability by sending a specifically crafted request to upload a malicious JSP file to the server, which could then be executed.
Mitigation and Prevention
Immediate Steps to Take
- Disable HTTP PUT requests if not required
- Implement proper input validation mechanisms
- Monitor and restrict file upload capabilities
Long-Term Security Practices
- Keep Apache Tomcat updated with the latest security patches
- Regularly review and update server configurations
Patching and Updates
Apply the necessary security patches provided by Apache Software Foundation to address this vulnerability.