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EuroTel ETL3100 Transmitter Unauthenticated Config/Log Download Vulnerability

Critical
Advisory ID
ZSL-2023-5784
Release Date
09 August 2023
Vendor
EuroTel S.p.A. - https://www.eurotel.it, SIEL, Sistemi Elettronici S.R.L - https://www.siel.fm
Affected Version
v01c01 (Microprocessor: socs0t10/ats01s01, Model: ETL3100 Exciter), v01x37 (Microprocessor: socs0t08/socs0s08, Model: ETL3100RT Exciter)
Tested On
GNU/Linux Ubuntu 3.0.0+ (GCC 4.3.3), lighttpd/1.4.26, PHP/5.4.3, Xilinx Virtex Machine
Summary

RF Technology For Television Broadcasting Applications. The Series ETL3100 Radio Transmitter provides all the necessary features defined by the FM and DAB standards. Two bands are provided to easily complain with analog and digital DAB standard. The Series ETL3100 Television Transmitter provides all the necessary features defined by the DVB-T, DVB-H, DVB-T2, ATSC and ISDB-T standards, as well as the analog TV standards. Three band are provided to easily complain with all standard channels, and switch softly from analog-TV 'world' to DVB-T/H, DVB-T2, ATSC or ISDB-T transmission.

Description

The TV and FM transmitter suffers from an unauthenticated configuration and log download vulnerability. This will enable the attacker to disclose sensitive information and help him in authentication bypass, privilege escalation and full system access.

Proof of Concept
Disclosure Timeline
N/A
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
09.08.2023Initial release
31.08.2023Added reference [1], [2], [3] and [4]
20.12.2023Added reference [5], [6] and [7]