Description
In Apache Tomcat 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12, the refactoring of the HTTP connectors introduced a regression in the send file processing. If the send file processing completed quickly, it was possible for the Processor to be added to the processor cache twice. This could result in the same Processor being used for multiple requests which in turn could lead to unexpected errors and/or response mix-up.
Remediation
References
Related Vulnerabilities
TYPO3 Permissions, Privileges, and Access Controls Vulnerability (CVE-2013-7081)
WordPress Plugin Contact Form DB-Elementor Cross-Site Request Forgery (1.5)
Apache HTTP Server Improper Locking Vulnerability (CVE-2002-1850)
WordPress Plugin Top 10-Popular posts for WordPress Multiple Vulnerabilities (3.2.4)
Coppermine Cross-site Scripting (XSS) Vulnerability (CVE-2015-3921)