CVE-2021-39769
NixOS vulnerability analysis and mitigation

Overview

In Device Policy for Android-12L, there is a possible way to determine whether an app is installed without query permissions due to a missing permission check. The vulnerability was assigned CVE-2021-39769 and was disclosed in the Android Security Bulletin (Android Bulletin).

Technical details

The vulnerability stems from a missing permission check in the Device Policy component. It has been assigned a CVSS v3.1 base score of 5.5 (MEDIUM) with the following vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. The vulnerability requires local access but has low complexity and requires no user interaction for exploitation (NVD).

Impact

This vulnerability could lead to local information disclosure with no additional execution privileges needed. An attacker could potentially determine whether specific apps are installed on the device without having the proper query permissions (Android Bulletin).

Mitigation and workarounds

The vulnerability was addressed in Android-12L. Users should update their devices to the latest available security patch level that includes fixes for this vulnerability (Android Bulletin).

Additional resources


SourceThis report was generated using AI

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