lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date: Mon, 4 May 2020 13:27:59 +0200
From: Vulnerability Lab <>
Subject: [FD] File Explorer v1.4 iOS - Multiple Persistent Vulnerabilities

Document Title:
File Explorer v1.4 iOS - Multiple Persistent Vulnerabilities

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Vulnerability Class:
Cross Site Scripting - Persistent

Current Estimated Price:
500€ - 1.000€

Product & Service Introduction:
File Explorer is the privacy app to organize and view all your files on
your iPhone or iPad. Always have your important files
with you, protect your privacy perfectly file.

(Copy of the Homepage:

Abstract Advisory Information:
The vulnerability laboratory core research team discovered multiple
persistent vulnerabilities in the File Explorer v1.4 mobile ios

Affected Product(s):
Nong Ge
Product: File Explorer v1.4 - iOS Mobile Web-Application

Vulnerability Disclosure Timeline:
2020-05-04: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Exploitation Technique:

Severity Level:

Authentication Type:
Pre auth - no privileges

User Interaction:
Low User Interaction

Disclosure Type:
Independent Security Research

Technical Details & Description:
An information disclosure web vulnerability has been discovered in the
official File Explorer v1.4 mobile ios web-application.

The local file explorer application can be protected with a local pin.
Any time the user opens the app, the pin is required
for the auth to access to private file explorer data. The protection
form is attached to process after the main form with
for example the list in the local application context. Normally the pin
must popup ahead to the local file index but in this
case is processed afterwards. Thus allows a local attacker with physical
ios device access to bypass the security mechanism
to preview files (names, size & co) and access the protected data. In
case of the attack the information can be accessed
that earlier then the protection mechanisms captures the attempt.

Successful exploitation of the local information disclosure application
vulnerability results in unauthorized data access.

Proof of Concept (PoC):
The information disclosure vulnerability can be exploited by local
attackers with physical device access without user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.

Manual steps to reproduce the vulnerability ...
1. Install the local application
2. Open the settings and setup a pin to protect
3. Move to the local web-server via wifi and start it
4. Upload some files for the index dir listing to preview
5. close the app and open it back by restart
Note: Now the pin should appear
6. Push a folder path or file that becomes visible and hold it
7. Push home again
8. Way free to edit and preview the files
9. Successful reproduce of the local vulnerability!

Security Risk:
The security risk of the persistent cross site scripting web
vulnerability in the web-application is estimated as medium.

Credits & Authors:
Vulnerability-Lab -
Benjamin Kunz Mejri -

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.


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 research@) to get a ask permission.

				    Copyright © 2020 | Vulnerability Laboratory - [Evolution
Security GmbH]™


Sent through the Full Disclosure mailing list
Web Archives & RSS:

Powered by blists - more mailing lists