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Vulnerability DatabaseCVE-2021-39740

CVE-2021-39740: 
NixOS vulnerability analysis and mitigation

Overview

In Messaging, there is a possible way to bypass attachment restrictions due to improper input validation. This vulnerability, identified as CVE-2021-39740, affects Android-12L operating system. The issue was discovered and reported through Android's security bulletin, with disclosure occurring in March 2022 (NVD).

Technical details

The vulnerability stems from improper input validation in the Android Messaging component. It has been assigned a CVSS v3.1 Base Score of 5.5 MEDIUM with a vector string of CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. The vulnerability requires local access with low attack complexity and low privileges, but no user interaction is needed for exploitation (NVD).

Impact

If exploited, this vulnerability could lead to local information disclosure without requiring additional execution privileges. The impact is primarily focused on confidentiality, with no direct impact on system integrity or availability (NVD).

Mitigation and workarounds

The vulnerability has been addressed in the Android-12L security update. Users are advised to update their devices to the latest available security patch level to mitigate this vulnerability (Android Bulletin).

Additional resources

Source: This report was generated using AI

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