CVE-2023-20830: 
NixOS vulnerability analysis and mitigation

CVE-2023-20830 is a vulnerability discovered in the GPS component of MediaTek chipsets. The vulnerability was disclosed in September 2023 and affects multiple MediaTek chipset models including MT2713, MT2735, and various MT67xx and MT68xx series. The issue stems from a missing bounds check that could lead to an out-of-bounds write condition (MediaTek Bulletin).

The vulnerability is classified as a medium severity issue with a CVSS v3.1 base score of 6.7 (MEDIUM). It is categorized under CWE-20 (Improper Input Validation) and specifically manifests as an out-of-bounds write vulnerability due to a missing bounds check in the GPS component. The vulnerability requires System execution privileges for exploitation and does not need user interaction (NVD).

If exploited, this vulnerability could lead to local escalation of privilege with System execution privileges. The vulnerability affects multiple operating systems and platforms including Android 12.0, 13.0, OpenWrt 1907, 2102, Yocto 2.6, and RDK-B 22Q3 (MediaTek Bulletin).

MediaTek has released security patches for the affected devices and notified device OEMs of the issues at least two months before public disclosure. Users should ensure their devices are updated with the latest security patches provided by their device manufacturers (MediaTek Bulletin).