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CVE-2020-0443 is a vulnerability in the LocaleList component of Android (LocaleList.java) affecting Android versions 8.0, 8.1, 9, 10, and 11. The vulnerability is due to an uncaught exception in LocaleList, which can be triggered by a local user. Exploitation leads to a forced device reboot, and in some cases, may require a factory reset to restore normal operation. The vulnerability requires user execution privileges but does not require user interaction for exploitation.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a proof-of-concept (PoC) Android application that exploits CVE-2020-0443, a vulnerability in the Android framework. The exploit is implemented in Java within the MainActivity.java file. When the app is run and the user triggers the 'Brick Device' button, it sets the 'system_locales' system setting to a value ('en_US,en_US') that causes vulnerable Android devices to enter a persistent boot loop after rebooting. The exploit requires the WRITE_SETTINGS permission and must be executed locally on the device. The repository is structured as a standard Android Studio project, with build scripts, resources, and test files. The main exploit logic is contained in the 'settingChange' method of MainActivity.java. No network endpoints are involved; the attack vector is local, requiring user interaction or physical access to the device. The PoC is intended for educational purposes and demonstrates the impact of the vulnerability, which was patched in the November 2020 Android security bulletin.
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