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Questions tagged [securitymanager]

A security manager is an object that defines a security policy for an application. This policy specifies actions that are unsafe or sensitive. Any actions not allowed by the security policy cause a SecurityException to be thrown. An application can also query its security manager to discover which actions are allowed.

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Can't get runtime to allow class in java.util

I recently wanted to create my own copy of GregorianCalendar to add some System.out.println to help me understand how it works. I copied the source and renamed the class, but it wouldn't compile because the source references package-private names…
ajb
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Changing System Property in Java

I'm trying to study JINI library, and found example of simple programm. Programm is here: package book.basic; import net.jini.core.discovery.LookupLocator; import net.jini.core.lookup.ServiceRegistrar; import java.rmi.RMISecurityManager; import…
Aleksandr
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Can I guarantee that my Java application will be executed with a Security Manager with a restrictive policy?

I will be distributing a stand alone Java application that will be installed on a public/shared computer. I want to secure the application as best I can from possible malicious/curious users. This means that I want the application to run in the…
axiopisty
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Preventing Thread creation/start in Java

my question, similar to why java security manager doesn't forbid neither creating new Thread() nor starting it? I'm writing a didactic application, where students are allowed to submit java code that perform certain tasks, and interact with each…
Marco Servetto
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Security Manager in Clojure

I try to install a security manager from a Clojure program and am stuck short after a good start. This one works for me in Clojures simple REPL, in the Lein REPL, and in the Cider REPL in Emacs. It prevents the use of (System/exit n). (def SM (proxy…
Falko
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Access denied ("java.net.SocketPermission" Error Occurred when i run my CLient Project in NetBeans

java.security.AccessControlException: access denied ("java.net.SocketPermission" "127.0.0.1:1099" "connect,resolve") My server side is working perfectly, no errors on the server.. while when I run my client code, I get this access denied…
user3125051
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Is it acceptable to globally and finally store the check for a SecurityManager

Is it acceptable to globally and finally store the check for a security manager? Given the following line of code: public static final boolean SEC_ON = (System.getSecurityManager() != null); Would it be acceptable to place this in a library and…
Ray
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AccessController doPrivileged can create thread when modifyThreadGroup not granted?

I am trying to prohibit thread creation in an AccessController.doPriviliged() method. The method below creates and runs the thread. I run this with -Djava.security.manager. According to this link, if modifyThreadGroup is not granted, then Thread…
markt
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AccessControlException when connecting to HTTP server from Tomcat servlet

I'm trying to make my tomcat servlet download a number of files, but I have apache and tomcat running on the same server, so I assume that is why it doesn't work. I've tested on servers not running apache, and all is well. Here's the exception I'm…
Stefan Kendall
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Security manager rarely used on server?

A recent question on SO lead me to an older answer about the Java Security Manager. My question about this line in that answer: The security manager impacts performances though, and it is rarely used on the server side. Can someone please back…
Miserable Variable
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Java AccessControlException despite granting appropriate file permission

I'm getting a bizarre error trying to run a Java RMI application with a SecurityManager. When the server starts up, I want it to read in text from a file supplied as a command-line argument. I'm using Eclipse, and this file is in the same directory…
Edward
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Security: Restrict internal access by third-party software

I have a Java application in which third-party "plugins" can be loaded by users to enhance the user experience. An API exists for use by these plugins, but the third-party software should be restricted from access to internal application classes…
FThompson
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java.security.AccessControlException : Access denied (java.lang.RuntimePermission modifyThread)

I have my Batch Application Program, in which I am using ThreadPoolExecutor in my Batch Application Program. So as soon as it hits the- executorService.shutdown(); line in my Batch Application program, I always get this below error in my Batch…
arsenal
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How can I "capture" System.exit(-1) from different thread?

I have the following System.setSecurityManager(new SecurityManager() { @Override public void checkExit(int status) { super.checkExit(status); //custom exception extends SecurityException throw new…
numeric
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Access non-public classes in sun.awt package [specifically: FetcherInfo]

Question: I have some performance problem in my app - and the bottleneck is sun.awt.image.ImageFetcher.run, and I canno't get any (more) meaningfull info from profiler. So I figured that it would be nice to look at jobs that ImageFetcher is doing.…
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