Title: Sielco Analog FM Transmitter 2.12 Improper Access Control Change Admin Password
Advisory ID: ZSL-2023-5756
Type: Local/Remote
Impact: Security Bypass
Risk: (4/5)
Release Date: 28.03.2023
Summary
Sielco designs and produces FM radio transmittersfor professional broadcasting. The in-house laboratory developsstandard and customised solutions to meet all needs. Whetherdigital or analogue, each product is studied to ensure reliability,resistance over time and a high standard of safety. Sielcotransmitters are distributed throughout the world and servemany radios in Europe, South America, Africa, Oceania and China.
Description
The application suffers from improper access control whenediting users. A user with Read permissions can manipulate users,passwords and permissions by sending a single HTTP POST requestwith modified parameters and edit other users\’ names, passwordsand permissions including admin password.
Vendor
Sielco S.r.l – https://www.sielco.org
Affected Version
2.12 (EXC5000GX)
2.12 (EXC120GX)
2.11 (EXC300GX)
2.10 (EXC1600GX)
2.10 (EXC2000GX)
2.08 (EXC1600GX)
2.08 (EXC1000GX)
2.07 (EXC3000GX)
2.06 (EXC5000GX)
1.7.7 (EXC30GT)
1.7.4 (EXC300GT)
1.7.4 (EXC100GT)
1.7.4 (EXC5000GT)
1.6.3 (EXC1000GT)
1.5.4 (EXC120GT)
Tested On
lwIP/2.1.1
Web/3.0.3
Vendor Status
[26.01.2023] Vulnerability discovered.
[27.01.2023] Contact with the vendor and CSIRT Italia.
[27.03.2023] No response from the vendor.
[27.03.2023] No response from the CSIRT team.
[28.03.2023] Public security advisory released.
PoC
sielco_fm_iac.html
Credits
Vulnerability discovered by Gjoko Krstic – <gjoko@zeroscience.mk>
References
N/A
Changelog
[28.03.2023] – Initial release
Contact
Zero Science Lab
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Source: php.6575-3202-LSZ/seitilibarenluv/ne/km.ecneicsorez.www
