1 // Copyright 2021 Code Intelligence GmbH 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package com.example; 16 17 import com.code_intelligence.jazzer.api.FuzzedDataProvider; 18 import java.lang.reflect.InvocationTargetException; 19 20 public class ClassLoaderLoadClass { fuzzerTestOneInput(FuzzedDataProvider data)21 public static void fuzzerTestOneInput(FuzzedDataProvider data) throws InterruptedException { 22 String input = data.consumeRemainingAsAsciiString(); 23 try { 24 // create an instance to trigger class initialization 25 ClassLoaderLoadClass.class.getClassLoader().loadClass(input).newInstance(); 26 // TODO(khaled): this fails to reproduce the finding. It seems that this is related to not 27 // throwing a hard-to-catch error when not running in the fuzzing mode. 28 // ClassLoaderLoadClass.class.getClassLoader().loadClass(input).getConstructor().newInstance(); 29 } catch (ClassNotFoundException | InstantiationException | IllegalAccessException ignored) { 30 } 31 } 32 } 33