Description
Apache Tomcat 6.x before 6.0.45, 7.x before 7.0.68, 8.x before 8.0.31, and 9.x before 9.0.0.M2 does not place org.apache.catalina.manager.StatusManagerServlet on the org/apache/catalina/core/RestrictedServlets.properties list, which allows remote authenticated users to bypass intended SecurityManager restrictions and read arbitrary HTTP requests, and consequently discover session ID values, via a crafted web application.
Mitigation
We recommend upgrading to a version of this component that is not vulnerable to this specific issue.
Workaround for versions including and above 6.x:
Add the below line to the `RestrictedServlets.properties` file:
```
org.apache.catalina.manager.StatusManagerServlet=restricted
```