https://bz.apache.org/bugzilla/show_bug.cgi?id=61424
Bug ID: 61424
Summary: Obtaining a StackOverflowError when running Tomcat 8.5
or 9 with SecurityManager, a
javax.management.remote.JMXPrincipal entry is present
in catalina.policy file and Subject.doAs method is
called.
Product: Tomcat 8
Version: 8.5.20
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: robert.gher...@museglobal.ro
Target Milestone: ----
Created attachment 35231
--> https://bz.apache.org/bugzilla/attachment.cgi?id=35231&action=edit
Project used to reproduce the StackOverflowError
When run Tomcat 8.5.20 with SecurityManager and catalina.policy contains an
javax.management.remote.JMXPrincipal entry and Subject.doAs method is called,
then a StackOverflowError is thrown.
Same error is reproducible in Tomcat 9.0.0.M26, but is not present in Tomcat
8.0.45.
The test was made using JDK 1.8.0_144.
In order to reproduce this error, we build a short example(see JMXSubject.war
in attachment) containing a simple servlet with the following source code:
package servlet;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.security.Principal;
import java.security.PrivilegedExceptionAction;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.security.auth.Subject;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/")
public class MyServlet extends HttpServlet {
private static final long serialVersionUID = -1647039991464261998L;
@Override
protected void doGet(HttpServletRequest reqest, HttpServletResponse response)
throws ServletException, IOException {
Object doAsResult = null;
Set<Principal> principals = new HashSet<>();
principals.add(new Principal() {
@Override
public String getName() {
return "myName";
}
});
Subject subject = new Subject(false, principals, Collections.EMPTY_SET,
Collections.EMPTY_SET);
try {
doAsResult = Subject.doAs(subject, new
PrivilegedExceptionAction<Object>() {
public Object run() throws IllegalAccessException,
InvocationTargetException {
return System.currentTimeMillis();
}
});
} catch (Exception e) {
e.printStackTrace();
}
response.getWriter().println("CurrentTimeMillis: " + doAsResult);
}
}
Step to reproduce:
1) Deploy the provided JMXSubject.war web project (which also includes in the
archive the source code) in ${catalina.home}/webapps folder.
2) Add in ${catalina.home}/conf/catalina.policy file the following lines:
grant codeBase "file:/-" {
permission java.security.AllPermission;
};
grant principal javax.management.remote.JMXPrincipal "jmx" {
permission java.security.AllPermission;
};
3) Start server with SecurityManager:
catalina.bat run -security
4) Access the following page: http://localhost:8080/JMXSubject
Now the following exception is thrown in tomcat 8.5.20:
javax.servlet.ServletException
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:337)
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:170)
java.security.AccessController.doPrivileged(Native Method)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:282)
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:279)
java.security.AccessController.doPrivileged(Native Method)
javax.security.auth.Subject.doAsPrivileged(Subject.java:549)
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:314)
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:253)
Root Cause
java.lang.StackOverflowError
java.security.AccessController.doPrivileged(Native Method)
java.io.FilePermission.init(FilePermission.java:203)
java.io.FilePermission.<init>(FilePermission.java:277)
java.lang.SecurityManager.checkRead(SecurityManager.java:888)
java.io.File.isDirectory(File.java:844)
sun.net.www.ParseUtil.fileToEncodedURL(ParseUtil.java:269)
sun.security.provider.PolicyFile.canonicalizeCodebase(PolicyFile.java:1735)
sun.security.provider.PolicyFile.access$700(PolicyFile.java:258)
sun.security.provider.PolicyFile$5.run(PolicyFile.java:1188)
sun.security.provider.PolicyFile$5.run(PolicyFile.java:1186)
java.security.AccessController.doPrivileged(Native Method)
sun.security.provider.PolicyFile.getPermissions(PolicyFile.java:1185)
sun.security.provider.PolicyFile.getPermissions(PolicyFile.java:1132)
sun.security.provider.PolicyFile.implies(PolicyFile.java:1086)
java.security.ProtectionDomain.implies(ProtectionDomain.java:285)
java.security.AccessControlContext.checkPermission(AccessControlContext.java:450)
java.security.AccessController.checkPermission(AccessController.java:884)
java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
sun.misc.URLClassPath.check(URLClassPath.java:642)
sun.misc.URLClassPath$JarLoader.checkResource(URLClassPath.java:961)
sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:1044)
sun.misc.URLClassPath.getResource(URLClassPath.java:239)
sun.misc.URLClassPath.getResource(URLClassPath.java:292)
java.lang.ClassLoader.getBootstrapResource(ClassLoader.java:1264)
java.lang.ClassLoader.getResource(ClassLoader.java:1093)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1194)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:348)
sun.security.provider.PolicyFile.addPermissions(PolicyFile.java:1357)
sun.security.provider.PolicyFile.getPermissions(PolicyFile.java:1228)
sun.security.provider.PolicyFile.getPermissions(PolicyFile.java:1191)
sun.security.provider.PolicyFile.getPermissions(PolicyFile.java:1132)
sun.security.provider.PolicyFile.implies(PolicyFile.java:1086)
java.security.ProtectionDomain.implies(ProtectionDomain.java:285)
java.security.AccessControlContext.checkPermission(AccessControlContext.java:450)
java.security.AccessController.checkPermission(AccessController.java:884)
java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
sun.misc.URLClassPath.check(URLClassPath.java:642)
sun.misc.URLClassPath$JarLoader.checkResource(URLClassPath.java:961)
sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:1044)
sun.misc.URLClassPath.getResource(URLClassPath.java:239)
sun.misc.URLClassPath.getResource(URLClassPath.java:292)
java.lang.ClassLoader.getBootstrapResource(ClassLoader.java:1264)
java.lang.ClassLoader.getResource(ClassLoader.java:1093)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1194)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:348)
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