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Vulnerability DatabaseCVE-2021-25473
CVE-2021-25473:
NixOS vulnerability analysis and mitigation
Overview
A local permanent denial of service vulnerability was discovered in Samsung SystemUI affecting Android 11.0 devices. The vulnerability (CVE-2021-25473) was reported on June 28, 2021 and involves improper exception handling for multi_sim_bar_hide_by_meadia_full value in SystemUI (Samsung Mobile).
Technical details
The vulnerability stems from improper exception handling in SystemUI when processing the multi_sim_bar_hide_by_meadia_full value. This vulnerability requires shell privilege access to be exploited. The issue was assigned CWE-755 (Improper Handling of Exceptional Conditions) according to the NVD CNA Status report (NVD CNA).
Impact
If exploited by an attacker with shell privileges, this vulnerability allows causing a permanent denial of service on the user device that persists until a factory reset is performed (Samsung Mobile).
Mitigation and workarounds
Samsung addressed this vulnerability in their October 2021 Security Maintenance Release (SMR) by adding proper exception handling to prevent crashes. Users should update their devices to this security patch level or later to be protected (Samsung Mobile).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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