Akuvox Smart Intercom/Doorphone ServicesHTTPAPI Improper Access Control Vendor: The Akuvox Company Product web page: https://www.akuvox.com Affected version: Doorphone: S539 S532 X916 X915 X912 R29 Intercom: E16C R20K-2 R20A-2 C313W-2 NS-2 NC-2 NX-2 Firmware: 912.30.1.137 Summary: Vandal-resistant Door Phone for High-end Buildings. Offering top-of-the-line features, Akuvox X912 is targeted at high-end residential and commercial projects. With a compact size, it is perfect for buildings with limited installation space. Desc: The Akuvox Smart Intercom/Doorphone suffers from an insecure service API access control. The vulnerability in ServicesHTTPAPI endpoint allows users with "User" privileges to modify API access settings and configurations. This improper access control permits privilege escalation, enabling unauthorized access to administrative functionalities. Exploitation of this issue could compromise system integrity and lead to unauthorized system modifications. Tested on: lighttpd/1.4.30 EasyHttpServer Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2024-5862 Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5862.php 25.02.2024 -- http://192.168.1.2/#/ServicesHTTPAPI # user:user