CVE-2023-21107: 
NixOS vulnerability analysis and mitigation

In retrieveAppEntry of NotificationAccessDetails.java, there is a missing permission check vulnerability (CVE-2023-21107) affecting Android versions 11, 12, 12L, and 13. The vulnerability was disclosed in the May 2023 Android Security Bulletin (Android Bulletin).

The vulnerability stems from a missing permission check in the NotificationAccessDetails.java component, specifically in the retrieveAppEntry function. It has been assigned a CVSS v3.1 base score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability is classified as CWE-276 (Incorrect Default Permissions) (NVD).

A successful exploitation of this vulnerability could lead to local escalation of privilege across user boundaries. The high CVSS score indicates potential severe impacts on confidentiality, integrity, and availability of the affected system (NVD).

The vulnerability can be exploited locally with low attack complexity. No additional execution privileges are needed, and user interaction is not required for exploitation. The attack requires local access with low privileges (NVD).

The vulnerability was addressed in the Android Security Bulletin for May 2023. Users should update their Android devices to the latest security patch level to mitigate this vulnerability (Android Bulletin).