// Copyright 2021 Code Intelligence GmbH // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package com.example; import com.code_intelligence.jazzer.api.FuzzedDataProvider; import java.lang.reflect.InvocationTargetException; public class ClassLoaderLoadClass { public static void fuzzerTestOneInput(FuzzedDataProvider data) throws InterruptedException { String input = data.consumeRemainingAsAsciiString(); try { // create an instance to trigger class initialization ClassLoaderLoadClass.class.getClassLoader().loadClass(input).newInstance(); // TODO(khaled): this fails to reproduce the finding. It seems that this is related to not // throwing a hard-to-catch error when not running in the fuzzing mode. // ClassLoaderLoadClass.class.getClassLoader().loadClass(input).getConstructor().newInstance(); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException ignored) { } } }