undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions

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/*
* Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @build invoker_module/* lookup_module/*
* @run testng/othervm --illegal-native-access=deny --enable-native-access=invoker_module
* lookup_module/handle.lookup.MethodHandleLookup
*/

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/*
* Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package handle.invoker;
import java.lang.foreign.AddressLayout;
import java.lang.foreign.Arena;
import java.lang.foreign.Linker;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.SegmentAllocator;
import java.lang.foreign.SymbolLookup;
import java.lang.foreign.ValueLayout;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.nio.charset.Charset;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Consumer;
public class MethodHandleInvoker {
public void call(MethodHandle methodHandle) throws Throwable {
try {
Object[] args = makeArgs(methodHandle.type());
methodHandle.invokeWithArguments(args);
throw new AssertionError("Call to restricted method did not fail as expected!");
} catch (IllegalCallerException ex) {
if (!ex.getMessage().contains("lookup_module")) {
throw new AssertionError("Caller module is not lookup_module!");
}
} catch (Throwable ex) {
throw new AssertionError("Call to restricted method did not fail as expected!", ex);
}
}
static final Map<Class<?>, Object> DEFAULT_VALUES = new HashMap<>();
static void addDefaultMapping(Class<?> carrier, Object value) {
DEFAULT_VALUES.put(carrier, value);
}
static {
addDefaultMapping(Linker.class, Linker.nativeLinker());
addDefaultMapping(Path.class, Path.of("nonExistent"));
addDefaultMapping(String.class, "Hello!");
addDefaultMapping(Runnable.class, (Runnable)() -> {});
addDefaultMapping(MethodHandle.class, MethodHandles.identity(int.class));
addDefaultMapping(Charset.class, Charset.defaultCharset());
addDefaultMapping(MethodType.class, MethodType.methodType(void.class));
addDefaultMapping(MemorySegment.class, MemorySegment.NULL);
addDefaultMapping(MemoryLayout.class, ValueLayout.JAVA_INT);
addDefaultMapping(FunctionDescriptor.class, FunctionDescriptor.ofVoid());
addDefaultMapping(Arena.class, Arena.ofAuto());
addDefaultMapping(MemorySegment.Scope.class, Arena.ofAuto().scope());
addDefaultMapping(SegmentAllocator.class, SegmentAllocator.prefixAllocator(MemorySegment.ofArray(new byte[10])));
addDefaultMapping(ValueLayout.OfByte.class, ValueLayout.JAVA_BYTE);
addDefaultMapping(ValueLayout.OfBoolean.class, ValueLayout.JAVA_BOOLEAN);
addDefaultMapping(ValueLayout.OfChar.class, ValueLayout.JAVA_CHAR);
addDefaultMapping(ValueLayout.OfShort.class, ValueLayout.JAVA_SHORT);
addDefaultMapping(ValueLayout.OfInt.class, ValueLayout.JAVA_INT);
addDefaultMapping(ValueLayout.OfFloat.class, ValueLayout.JAVA_FLOAT);
addDefaultMapping(ValueLayout.OfLong.class, ValueLayout.JAVA_LONG);
addDefaultMapping(ValueLayout.OfDouble.class, ValueLayout.JAVA_DOUBLE);
addDefaultMapping(AddressLayout.class, ValueLayout.ADDRESS);
addDefaultMapping(SymbolLookup.class, SymbolLookup.loaderLookup());
addDefaultMapping(Consumer.class, (Consumer<Object>)(Object o) -> {});
addDefaultMapping(FunctionDescriptor.class, FunctionDescriptor.ofVoid());
addDefaultMapping(Linker.Option[].class, null);
addDefaultMapping(Runtime.class, Runtime.getRuntime());
addDefaultMapping(byte.class, (byte)0);
addDefaultMapping(boolean.class, true);
addDefaultMapping(char.class, (char)0);
addDefaultMapping(short.class, (short)0);
addDefaultMapping(int.class, 0);
addDefaultMapping(float.class, 0f);
addDefaultMapping(long.class, 0L);
addDefaultMapping(double.class, 0d);
}
static Object[] makeArgs(MethodType type) {
return type.parameterList().stream()
.map(MethodHandleInvoker::makeArg)
.toArray();
}
static Object makeArg(Class<?> clazz) {
if (!DEFAULT_VALUES.containsKey(clazz)) {
throw new UnsupportedOperationException(clazz.getName());
}
return DEFAULT_VALUES.get(clazz);
}
}

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/*
* Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
module invoker_module {
exports handle.invoker;
}

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/*
* Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package handle.lookup;
import java.lang.foreign.Arena;
import java.lang.foreign.Linker;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.SymbolLookup;
import java.nio.file.Path;
import java.util.function.Consumer;
import org.testng.annotations.*;
public class MethodHandleLookup {
@Test(dataProvider = "restrictedMethods")
public void testRestrictedHandles(MethodHandle handle, String testName) throws Throwable {
new handle.invoker.MethodHandleInvoker().call(handle);
}
@DataProvider(name = "restrictedMethods")
static Object[][] restrictedMethods() {
try {
return new Object[][]{
{ MethodHandles.lookup().findVirtual(Linker.class, "downcallHandle",
MethodType.methodType(MethodHandle.class, FunctionDescriptor.class, Linker.Option[].class)), "Linker::downcallHandle/1" },
{ MethodHandles.lookup().findVirtual(Linker.class, "downcallHandle",
MethodType.methodType(MethodHandle.class, MemorySegment.class, FunctionDescriptor.class, Linker.Option[].class)), "Linker::downcallHandle/2" },
{ MethodHandles.lookup().findVirtual(Linker.class, "upcallStub",
MethodType.methodType(MemorySegment.class, MethodHandle.class, FunctionDescriptor.class, Arena.class, Linker.Option[].class)), "Linker::upcallStub" },
{ MethodHandles.lookup().findVirtual(MemorySegment.class, "reinterpret",
MethodType.methodType(MemorySegment.class, long.class)),
"MemorySegment::reinterpret/1" },
{ MethodHandles.lookup().findVirtual(MemorySegment.class, "reinterpret",
MethodType.methodType(MemorySegment.class, Arena.class, Consumer.class)),
"MemorySegment::reinterpret/2" },
{ MethodHandles.lookup().findVirtual(MemorySegment.class, "reinterpret",
MethodType.methodType(MemorySegment.class, long.class, Arena.class, Consumer.class)),
"MemorySegment::reinterpret/3" },
{ MethodHandles.lookup().findStatic(SymbolLookup.class, "libraryLookup",
MethodType.methodType(SymbolLookup.class, String.class, Arena.class)),
"SymbolLookup::libraryLookup(String)" },
{ MethodHandles.lookup().findStatic(SymbolLookup.class, "libraryLookup",
MethodType.methodType(SymbolLookup.class, Path.class, Arena.class)),
"SymbolLookup::libraryLookup(Path)" },
{ MethodHandles.lookup().findStatic(System.class, "load",
MethodType.methodType(void.class, String.class)),
"System::load" },
{ MethodHandles.lookup().findStatic(System.class, "loadLibrary",
MethodType.methodType(void.class, String.class)),
"System::loadLibrary" },
{ MethodHandles.lookup().findVirtual(Runtime.class, "load",
MethodType.methodType(void.class, String.class)),
"Runtime::load" },
{ MethodHandles.lookup().findVirtual(Runtime.class, "loadLibrary",
MethodType.methodType(void.class, String.class)),
"Runtime::loadLibrary" }
};
} catch (Throwable ex) {
throw new ExceptionInInitializerError((ex));
}
}
}

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/*
* Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
open module lookup_module {
requires org.testng;
requires invoker_module;
exports handle.lookup;
}