Title: Sielco PolyEco Digital FM Transmitter 2.0.6 Unauthenticated Information Disclosure
Advisory ID: ZSL-2023-5766
Type: Local/Remote
Impact: Exposure of System Information, Exposure of Sensitive Information
Risk: (3/5)
Release Date: 10.04.2023
Summary
PolyEco is the innovative family of high-end digitalFM transmitters of Sielco. They are especially suited as highperformance power system exciters or compact low-mid powertransmitters. 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 display4.3\” or remotely. Many advanced features are inside by defaultin the basic version such as: stereo and RDS encoder, audiochange-over, remote-control via LAN and SNMP, \”FFT\” spectralanalysis of the audio sources, SFN synchronization and much more.
Description
Sielco PolyEco is affected by an information disclosurevulnerability due to improper access control enforcement. Anunauthenticated remote attacker can exploit this, via a speciallycrafted request to gain access to sensitive information.
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
sielco_polyeco_info.txt
Credits
Vulnerability discovered by Gjoko Krstic – <gjoko@zeroscience.mk>
References
N/A
Changelog
[10.04.2023] – Initial release
Contact
Zero Science Lab
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Source: php.6675-3202-LSZ/seitilibarenluv/ne/km.ecneicsorez.www
