Huawei Backup App v6.30.52.12.L - Session Vulnerability

Document Title:
===============
Huawei Backup App v6.30.52.12.L - Session Vulnerability 


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1815

Video: https://www.vulnerability-lab.com/get_content.php?id=1987


Release Date:
=============
2018-07-30


Vulnerability Laboratory ID (VL-ID):
====================================
1815


Common Vulnerability Scoring System:
====================================
5.9


Vulnerability Class:
====================
Insufficient Session Validation


Current Estimated Price:
========================
500€ - 1.000€


Product & Service Introduction:
===============================
Huawei Backup App  v6.30.52.12.L


Abstract Advisory Information:
==============================
A misconfiguration issue and session vulnerability has been discovered in the official Huawei Backup App v6.30.52.12.L for the android mobile phones.


Vulnerability Disclosure Timeline:
==================================
2018-07-30: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Huawei
Product: Hauwei Backup App - Mobile (API) 6.30.52.12.L


Exploitation Technique:
=======================
Local


Severity Level:
===============
Medium


Authentication Type:
====================
Full authentication (admin) - full privileges


User Interaction:
=================
No User Interaction


Disclosure Type:
================
Responsible Disclosure Program


Technical Details & Description:
================================
A configuration and session vulnerability has been discovered in the official Hauwei Backup App 6.30.52.12.L for the android mobile phones.
Local Attackers are able to reset the password of the Backup Encryption Area to get access to backup files and restore or copy them as well.

The vulnerability is located in the application folder `HuaweiBackup - BackupFiles` with the `Name of the Backup folder`. The new issue affects 
the file called `info.xml` which is storing the encrypted passwords inside. It is possible to bypass and reset the current password successfully 
by modifying the `checkmsg` parameter value with another encrypted password type . Due to our investigation Huawei Backup android application 
comes default to all huawei mobile products.


Vunerable Module(s):
[+] HuaweiBackup - BackupFiles - (Name of the Backup Folder)

Vulnerable File(s):
[+] info.xml

Vulnerable Parameter(s):
[+] checkmsg


Proof of Concept (PoC):
=======================
The configuration and session vulnerability can be exploited by remote attackers with low privileged web-application user account and 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. Goes to `Huawei Backup folder` - `ackupFiles` - `name of current backup`
2. Rename the file " info.xml " into "info.txt" for editing .
3. Find the parameter " checkmsg" and replace the current encrypted value into another one . 
4. The password reset successfully ! 
5. Hackers are able to get access into it using the new password as well
6. Successful reproduce of the vulnerability in the huawei backup app!


PoC: Video 
https://www.youtube.com/watch?v=3nZJoRU0stE


Solution - Fix & Patch:
=======================
The vulnerability has been patched and the product received at the location a work-around to ensure the stable core security.


Security Risk:
==============
The security risk of the software vulnerability in the huawei backup mobile app is estimated as medium.


Credits & Authors:
==================
Vulnerability-Lab [[email protected]] - https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab


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 Labs or its 
suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability mainly for incidental
or consequential 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. We have no need for criminal activities or membership requests. We do not publish advisories 
or vulnerabilities of religious-, militant- and racist- hacker/analyst/researcher groups or individuals. We do not publish trade researcher mails, 
phone numbers, conversations or anything else to journalists, investigative authorities or private individuals. 

Domains:    www.vulnerability-lab.com		- www.vulnerability-db.com					- www.evolution-sec.com
Programs:   vulnerability-lab.com/submit.php 	- vulnerability-lab.com/list-of-bug-bounty-programs.php 	- vulnerability-lab.com/register.php
Feeds:	    vulnerability-lab.com/rss/rss.php 	- vulnerability-lab.com/rss/rss_upcoming.php 			- vulnerability-lab.com/rss/rss_news.php
Social:	    twitter.com/vuln_lab		- facebook.com/VulnerabilityLab 				- youtube.com/user/vulnerability0lab

Any modified copy or reproduction, including partially usages, of this file, resources or information 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@) to get an ask permission.

				    Copyright © 2018 | Vulnerability Laboratory - [Evolution Security GmbH]™