Title: Sielco Analog FM Transmitter 2.12 \’id\’ Cookie Brute Force Session Hijacking
Advisory ID: ZSL-2023-5758
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 Cookie session ID \’id\’ is of an insufficient length andcan be exploited by brute force, which may allow a remote attackerto obtain a valid session, bypass authentication and manipulatethe transmitter.
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_sess.txt
Credits
Vulnerability discovered by Gjoko Krstic – <gjoko@zeroscience.mk>
References
[1] https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5613.php
Changelog
[28.03.2023] – Initial release
Contact
Zero Science Lab
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Source: php.8575-3202-LSZ/seitilibarenluv/ne/km.ecneicsorez.www
