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Akuvox Smart Intercom/Doorphone Unauthenticated Stream Disclosure

Medium
Advisory ID
ZSL-2024-5826
Release Date
20 August 2024
Vendor
The Akuvox Company - https://www.akuvox.com
Affected Version
Doorphone:, S539, S532, X916, X915, X912, R29, Intercom:, R20K-2, R20A-2, C313W-2, NS-2, NC-2, NX-2, Firmware: 912.30.1.137
Tested On
lighttpd/1.4.30, EasyHttpServer
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.

Description

The application suffers from an unauthenticated live stream disclosure when requesting video.cgi endpoint on port 8080.

Proof of Concept
Disclosure Timeline
25.02.2024Vulnerability discovered.
19.03.2024Vendor contacted.
20.03.2024Vendor responds asking for more details. Sends PGP key.
22.03.2024Replied to the vendor.
29.03.2024Vendor starts working on a fix.
02.04.2024Working with the vendor.
03.07.2024Vendor releases version 915.30.10.146 to address this issue.
20.08.2024Coordinated public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
20.08.2024Initial release
23.03.2026Added reference [2]