CVE-2023-23298 Information

Description

The Toybox.Graphics.BufferedBitmap.initialize API method in CIQ API version 2.3.0 through 4.1.7 does not validate its parameters which can result in integer overflows when allocating the underlying bitmap buffer. A malicious application could call the API method with specially crafted parameters and hijack the execution of the device’s firmware.

Reference

https://developer.garmin.com/connect-iq/compatible-devices/ https://github.com/anvilsecure/garmin-ciq-app-research/blob/main/advisories/CVE-2023-23298.md https://developer.garmin.com/connect-iq/api-docs/Toybox/Graphics/BufferedBitmap.html#initialize-instance_function