Undocumented Web API Allows Unauthorized Access to Firmware Update Settings on TCL Alcatel Cingular Flip 2 B9HUAH1 Devices

CVE-2019-16243 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

On TCL Alcatel Cingular Flip 2 B9HUAH1 devices, there is an undocumented web API that allows unprivileged JavaScript, including JavaScript running within the KaiOS browser, to view and edit the device's firmware over-the-air update settings. (This web API is normally used by the system application to trigger firmware updates via OmaService.js.)

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