Apache Tomcat Multiple Vulnerabilities

Some vulnerabilities have been identified in Apache Tomcat, which can be exploited by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service).

1. An error within the NIO connector when transferring files using sendfile over HTTPS can be exploited to trigger an infinite loop and cause excessive consumption of CPU resources.
2. An error within the FormAuthenticator component when handling authentication requests can be exploited to bypass the authentication mechanism via a specially crafted request.
3. An error within the "doFilter()" method when accessing protected resources can be exploited to bypass the CSRF prevention filter and access the resource without a session identifier.