CVE-2017-5651 Explained : Impact and Mitigation
Learn about CVE-2017-5651 affecting Apache Tomcat versions 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
Apache Tomcat versions 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12 are affected by a vulnerability related to HTTP connectors refactoring, potentially leading to information disclosure.
Understanding CVE-2017-5651
This CVE involves a regression in the send file processing of Apache Tomcat versions 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12, which could result in unexpected errors and response mix-up.
What is CVE-2017-5651?
The HTTP connectors refactoring in the mentioned versions introduced an issue where the Processor could be added to the processor cache twice, potentially causing it to be used for multiple requests.
The Impact of CVE-2017-5651
This vulnerability could lead to unexpected errors and response mix-up due to the double addition of the Processor in the processor cache.
Technical Details of CVE-2017-5651
Apache Tomcat versions 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12 are affected by this vulnerability.
Vulnerability Description
The refactoring of HTTP connectors in the mentioned versions introduced a regression in send file processing, allowing the Processor to be added twice to the processor cache.
Affected Systems and Versions
- Product: Apache Tomcat
- Vendor: Apache Software Foundation
- Versions: 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12
Exploitation Mechanism
The rapid completion of send file processing could lead to the double addition of the Processor to the cache, potentially causing it to be used for multiple requests.
Mitigation and Prevention
Immediate Steps to Take:
- Apply the necessary patches provided by Apache Software Foundation.
- Monitor official security channels for updates and advisories.
Long-Term Security Practices:
- Regularly update Apache Tomcat to the latest secure versions.
- Implement network security measures to detect and prevent potential exploits.
- Conduct regular security audits and penetration testing.
Patching and Updates
Ensure that all relevant patches and updates released by Apache Software Foundation are promptly applied.