CVE-2021-39700
NixOS vulnerability analysis and mitigation

Overview

In the policies of adbd.te, there was a logic error which caused the CTS Listening Ports Test to report invalid results. This vulnerability, identified as CVE-2021-39700, affects Android versions 10, 11, and 12. The issue was disclosed in the Android Security Bulletin of May 2022 (Android Bulletin).

Technical details

The vulnerability is classified with a CVSS v3.1 Base Score of 5.5 (MEDIUM) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. The vulnerability exists in the adbd.te policies and could lead to information disclosure through a logic error in the CTS Listening Ports Test functionality (NVD).

Impact

The vulnerability could lead to local information disclosure with no additional execution privileges needed. The impact is limited to confidentiality, with no effects on integrity or availability of the system (NVD).

Mitigation and workarounds

The vulnerability was addressed in the Android Security Bulletin of May 2022. Users should update their Android devices to the security patch level of May 1, 2022, or later to receive the fix (Android Bulletin).

Additional resources


SourceThis report was generated using AI

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