Public bug reported:
When executing a Java applet or calling Java directly from Firefox
chrome:// code (e.g., Firefox extensions), the code should be granted
AllPermissions. Given that chrome:// code has shell execution
privileges, this is not a security hole. Permissions are handled
properly by the Sun NPRuntime Java plug-in, and were handled mostly
properly by the old OJI/LiveConnect plug-in.
Running the following from a Firefox overlay:
new
java.net.URLClassLoader(java.lang.reflect.Array.newInstance(java.lang.Class.forName("java.net.URL"),
0));
produces the following error in icedtea6-plugin-6b18-1.8-0ubuntu1
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at
sun.applet.PluginAppletSecurityContext$6.run(PluginAppletSecurityContext.java:1050)
at java.security.AccessController.doPrivileged(Native Method)
at
sun.applet.PluginAppletSecurityContext.handleMessage(PluginAppletSecurityContext.java:1047)
at
sun.applet.AppletSecurityContextManager.handleMessage(AppletSecurityContextManager.java:69)
at
sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:273)
at
sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82)
Caused by: java.security.AccessControlException: access denied
(java.lang.RuntimePermission createClassLoader)
at
java.security.AccessControlContext.checkPermission(AccessControlContext.java:342)
at
java.security.AccessController.checkPermission(AccessController.java:553)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at
net.sourceforge.jnlp.runtime.JNLPSecurityManager.checkPermission(JNLPSecurityManager.java:282)
at
java.lang.SecurityManager.checkCreateClassLoader(SecurityManager.java:611)
at java.lang.ClassLoader.checkCreateClassLoader(ClassLoader.java:194)
at java.lang.ClassLoader.<init>(ClassLoader.java:243)
at java.security.SecureClassLoader.<init>(SecureClassLoader.java:94)
at java.net.URLClassLoader.<init>(URLClassLoader.java:130)
... 10 more
Error on Java side: LiveConnectPermissionNeeded access denied
(java.lang.RuntimePermission createClassLoader)
This same code executes without a hitch in the sun-java6-plugin-6.20dlj-
1ubuntu3. This is currently preventing the Zotero OpenOffice plug-in
from working on a default Ubuntu installation.
** Affects: openjdk-6 (Ubuntu)
Importance: Undecided
Status: New
--
code from privileged sources executed with restricted permissions
https://bugs.launchpad.net/bugs/596688
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