[IGNITE-13300] Ignite sandbox vulnerability allows to execute user code in privileged proxy

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.9
• Fix Version/s: 2.9
• Component/s: security
• Labels: iep-38 sandbox
• Assignee: Aleksey Plekhanov
• Reporter: Aleksey Plekhanov
• Created: 27/Jul/20 10:10
• Updated: 29/Jul/20 07:59
• Resolved: 28/Jul/20 06:28

Description

Ignite sandbox returns a privileged proxy for Ignite and some other system interfaces. If the user implements one of these interfaces and gets via privileged proxy an instance of implemented class, privileged proxy for user class will be returned.
Reproducer:

public class PrivilegedProxyTest extends AbstractSandboxTest {
    public void testPrivelegedUserObject() throws Exception {
        grid(CLNT_FORBIDDEN_WRITE_PROP).getOrCreateCache(DEFAULT_CACHE_NAME).put(0, new TestIterator<>());

        runForbiddenOperation(() -> grid(CLNT_FORBIDDEN_WRITE_PROP).compute().run(() -> {
            GridIterator<?> it = (GridIterator<?>)Ignition.localIgnite().cache(DEFAULT_CACHE_NAME).get(0);

            it.iterator();
        }), AccessControlException.class);
    }

    public static class TestIterator<T> extends GridIterableAdapter<T> {
        public TestIterator() {
            super(Collections.emptyIterator());
        }

        @Override public GridIterator<T> iterator() {
            controlAction();

            return super.iterator();
        }
    }
}

Issue Links

• links to: GitHub Pull Request #8084