# Exploit Title: SOUND4 IMPACT/FIRST/PULSE/Eco v2.x  - Authorization Bypass (IDOR)
# Exploit Author: LiquidWorm

Vendor: SOUND4 Ltd.
Product web page: https://www.sound4.com | https://www.sound4.biz
Affected version: FM/HD Radio Processing:
                  Impact/Pulse/First (Version 2: 1.1/2.15)
                  Impact/Pulse/First (Version 1: 2.1/1.69)
                  Impact/Pulse Eco 1.16
                  Voice Processing:
                  BigVoice4 1.2
                  BigVoice2 1.30
                  Web-Audio Streaming:
                  Stream 1.1/2.4.29
                  Watermarking:
                  WM2 (Kantar Media) 1.11

Summary: The SOUND4 IMPACT introduces an innovative process - mono and
stereo parts of the signal are processed separately to obtain perfect
consistency in terms of both sound and level. Therefore, in moving
reception, when the FM receiver switches from stereo to mono and back to
stereo, the sound variations and changes in level are reduced by over 90%.
In the SOUND4 IMPACT processing chain, the stereo expander can be used
substantially without any limitations.

With its advanced functionalities and impressive versatility, SOUND4
PULSE gives clients the ultimate price - performance ratio, providing
much more than just a processor. Flexible and powerful, it ensures perfect
sound quality and full compatibility with radio broadcasting standards
and can be used simultaneously for FM and HD, DAB, DRM or streaming.

SOUND4 FIRST provides all the most important functionalities you need
in an FM/HD processor and sets the bar high both in terms of performance
and affordability. Designed to deliver a sound of uncompromising quality,
this tool gives you 2-band processing, a digital stereo generator and an
IMPACT Clipper.

Desc: The application is vulnerable to insecure direct object references
that occur when the application provides direct access to objects based
on user-supplied input. As a result of this vulnerability attackers can
bypass authorization and access the hidden resources on the system and
execute privileged functionalities.

Tested on: Apache/2.4.25 (Unix)
           OpenSSL/1.0.2k
           PHP/7.1.1
           GNU/Linux 5.10.43 (armv7l)
           GNU/Linux 4.9.228 (armv7l)


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
Macedonian Information Security Research and Development Laboratory
Zero Science Lab - https://www.zeroscience.mk - @zeroscience


Advisory ID: ZSL-2022-5723
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5723.php


26.09.2022

--


(GET|POST) /** HTTP/1.1

/var/www/:
----------

.SOUND4
about.php
actioninprogress.php
broken_error.php
cfg_filewatch.xml
cfg_filewatch_specific.xml
checklogin.php
checkserver.php
config.php
datahandlerdlg.php
descrxml.php
dns.php
downloads
downloads.php
fullrebootsystem.php
global.php
globaljs.php
guifactorysettings.xml
guixml.php
guixml_error.php
header.php
images
index.php
isreboot.php
jquery-3.2.1.min.js
jquery-plugins
jquery-ui-custom
jquery-ui-i18n.js
jquery-ui.css
jquery-ui.js
jquery.js
jquery.ui.touch-punch.min.js
killffmpeg.php
linkandshare.php
login.php
logout.php
monitor.php
networkdiagnostic.php
partialrebootsystem.php
ping.php
playercfg.xml
rebootsystem.php
restoreinprogress.php
script.min.js
secure.php
serverinprogress.php
settings.php
setup.php
setup_ethernet.php
style.min.css
traceroute.php
upgrade
upgrade.php
upgradeinprogress.php
uploaded_guicustomload.php
uploaded_kantarlic.php
uploaded_licfile.php
uploaded_logo.php
uploaded_presetfile.php
uploaded_restorefile.php
uploaded_upgfile.php
validate_tz.php
ws.min.js
ws.php
wsjquery-class.min.js
www-data-handler.php

/usr/cgi-bin/:
--------------

(GET|POST) /** HTTP/1.1

backup.cgi
cgi-form-data
downloadkantarlic.cgi
ffmpeg.cgi
frontpanel
getlogs.cgi
getlogszip.cgi
guicustomsettings.cgi
guicustomsettingsload.cgi
guifactorysettings.cgi
importpreset.cgi
loghandler.php
logo
logoremove.cgi
logoupload.cgi
phptail.php
printenv
printenv.vbs
printenv.wsf
restore.cgi
restorefactory.cgi
test-cgi
upgrade.cgi
upload.cgi