CVE-2019-19563: 
NixOS vulnerability analysis and mitigation

CVE-2019-19563 is a security vulnerability discovered in Mercedes-Benz HERMES 2.1, a component of the vehicle's infotainment system. The vulnerability stems from a misconfiguration in the debug interface that allows an attacker with direct physical access to device hardware to obtain cellular modem information. This vulnerability was disclosed on November 15, 2020 and has been assigned a CVSS v3.1 base score of 2.4 (LOW) (NVD).

The vulnerability has been assigned a CVSS v3.1 vector of CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, indicating that it requires physical access (AV:P), has low attack complexity (AC:L), requires no privileges (PR:N), needs no user interaction (UI:N), has unchanged scope (S:U), and can only impact confidentiality at a low level (C:L) with no impact on integrity (I:N) or availability (A:N) (NVD).

The vulnerability allows an attacker with physical access to the device hardware to obtain cellular modem information. The impact is limited to information disclosure of cellular modem data, with no ability to modify system settings or affect vehicle operations (NVD).

The vulnerability was discovered as part of a security research collaboration between Mercedes-Benz and the 360 Group's Sky-Go car threat research team. Mercedes-Benz has taken incident response steps including providing fixes for the identified vulnerabilities (Threatpost).

The vulnerability was disclosed at Black Hat USA 2020 as part of a larger presentation detailing 19 security flaws found in Mercedes-Benz vehicles. The disclosure was handled through coordinated efforts between the researchers and Mercedes-Benz, demonstrating a collaborative approach to automotive security (Threatpost).