55 lines
2.0 KiB
C++
55 lines
2.0 KiB
C++
/**
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <binder/IServiceManager.h>
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#include <media/mediaplayer.h>
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#include "../includes/common.h"
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using namespace android;
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int main() {
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constexpr size_t bufferSize = 16;
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constexpr uint32_t prepareDrm = 39;
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constexpr uint32_t unknownTrxnCode = prepareDrm + 5;
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sp<IServiceManager> serviceManager = defaultServiceManager();
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FAIL_CHECK(serviceManager != nullptr);
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sp<IBinder> mediaPlayerService = serviceManager->getService(String16("media.player"));
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FAIL_CHECK(mediaPlayerService != nullptr);
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sp<IMediaPlayerService> iMediaPlayerService =
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IMediaPlayerService::asInterface(mediaPlayerService);
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FAIL_CHECK(iMediaPlayerService != nullptr);
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sp<MediaPlayer> mediaPlayer = new MediaPlayer();
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FAIL_CHECK(mediaPlayer != nullptr);
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sp<IMediaPlayer> iMediaPlayer = iMediaPlayerService->create(mediaPlayer);
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FAIL_CHECK(iMediaPlayer != nullptr);
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Parcel data, reply;
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data.writeInterfaceToken(iMediaPlayer->getInterfaceDescriptor());
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status_t status = IMediaPlayer::asBinder(iMediaPlayer)->transact(unknownTrxnCode, data, &reply);
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FAIL_CHECK(status == UNKNOWN_TRANSACTION);
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const uint8_t arr[bufferSize] = {};
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data.write(arr, bufferSize);
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data.writeUint32(bufferSize);
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data.writeUnpadded(arr, bufferSize - 1);
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status = IMediaPlayer::asBinder(iMediaPlayer)->transact(prepareDrm, data, &reply);
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return status == OK ? EXIT_VULNERABLE : EXIT_SUCCESS;
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}
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