← Advisories

Screen SFT DAB 600/C Unauthenticated Information Disclosure (userManager.cgx)

Medium
Advisory ID
ZSL-2023-5776
Release Date
13 May 2023
Vendor
DB Elettronica Telecomunicazioni SpA - https://www.screen.it, https://www.dbbroadcast.com
Affected Version
Firmware: 1.9.3, Bios firmware: 7.1 (Apr 19 2021), Gui: 2.46, FPGA: 169.55, uc: 6.15
Tested On
Keil-EWEB/2.1, MontaVista® Linux® Carrier Grade eXpress (CGX)
Summary

Screen's new radio DAB Transmitter is reaching the highest technology level in both Digital Signal Processing and RF domain. SFT DAB Series - Compact Radio DAB Transmitter - Air. Thanks to the digital adaptive precorrection and configuatio flexibility, the Hot Swap System technology, the compactness and the smart system design, the SFT DAB are advanced transmitters. They support standards DAB, DAB+ and T-DMB and are compatible with major headend brands.

Description

Screen is affected by an information disclosure vulnerability due to improper access control enforcement. An unauthenticated remote attacker can exploit this, via a specially crafted request to gain access to sensitive information including usernames and source IP addresses.

Proof of Concept
Disclosure Timeline
19.03.2023Vulnerability discovered.
20.03.2023Vendor contacted.
12.05.2023No response from the vendor.
13.05.2023Public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
13.05.2023Initial release
12.10.2023Added reference [1] and [2]
27.11.2025Added reference [3] and [4]