{"id":"ASB-A-170731783","details":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.","aliases":["A-170731783","CVE-2021-0331"],"modified":"2026-09-18T15:47:37.392928379Z","published":"2021-02-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2021-02-01"},{"type":"FIX","url":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38"}],"affected":[{"package":{"name":"platform/packages/apps/Settings","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0:0"},{"fixed":"8.0:2021-02-01"}]}],"versions":["8.0"],"ecosystem_specific":{"severity":"High","spl":"2021-02-01","types":["EoP"],"vanir_signatures":[{"id":"ASB-A-170731783-405a3818","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","target":{"file":"src/com/android/settings/notification/NotificationAccessConfirmationActivity.java","function":"onCreate"},"deprecated":false,"digest":{"length":928,"function_hash":"145358671088144896228324099267018853571"}},{"source":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","target":{"file":"src/com/android/settings/notification/NotificationAccessConfirmationActivity.java"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["87350972594315985056756197480146312750","128441514203815780955371503440319638117","42504521014124521314865413295361664258","48431991658275707829598539139946437564"]},"id":"ASB-A-170731783-fcf54f0c","signature_type":"Line","signature_version":"v1"}],"fixes":["https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-170731783.json"}},{"package":{"name":"platform/packages/apps/Settings","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.1:0"},{"fixed":"8.1:2021-02-01"}]}],"versions":["8.1"],"ecosystem_specific":{"severity":"High","spl":"2021-02-01","types":["EoP"],"vanir_signatures":[{"source":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","target":{"function":"onCreate","file":"src/com/android/settings/notification/NotificationAccessConfirmationActivity.java"},"deprecated":false,"digest":{"length":928,"function_hash":"145358671088144896228324099267018853571"},"id":"ASB-A-170731783-04be69c1","signature_type":"Function","signature_version":"v1"},{"signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","target":{"file":"src/com/android/settings/notification/NotificationAccessConfirmationActivity.java"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["87350972594315985056756197480146312750","128441514203815780955371503440319638117","42504521014124521314865413295361664258","48431991658275707829598539139946437564"]},"id":"ASB-A-170731783-33bc39ba","signature_type":"Line"}],"fixes":["https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-170731783.json"}},{"package":{"name":"platform/packages/apps/Settings","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9:0"},{"fixed":"9:2021-02-01"}]}],"versions":["9"],"ecosystem_specific":{"spl":"2021-02-01","types":["EoP"],"vanir_signatures":[{"id":"ASB-A-170731783-3fb0935a","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","target":{"file":"src/com/android/settings/notification/NotificationAccessConfirmationActivity.java","function":"onCreate"},"deprecated":false,"digest":{"function_hash":"145358671088144896228324099267018853571","length":928}},{"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["87350972594315985056756197480146312750","128441514203815780955371503440319638117","42504521014124521314865413295361664258","48431991658275707829598539139946437564"]},"id":"ASB-A-170731783-dfb9879c","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","target":{"file":"src/com/android/settings/notification/NotificationAccessConfirmationActivity.java"}}],"fixes":["https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38"],"severity":"High"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-170731783.json"}},{"package":{"name":"platform/packages/apps/Settings","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-02-01"}]}],"versions":["10"],"ecosystem_specific":{"types":["EoP"],"vanir_sig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