{"id":"ASB-A-181053462","details":"In conditionallyRemoveIdentifiers of SubscriptionController.java, there is a possible way to retrieve a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-181053462","CVE-2021-0644"],"modified":"2026-09-18T15:47:37.392928379Z","published":"2021-09-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2021-09-01"},{"type":"FIX","url":"https://android.googlesource.com/platform/frameworks/base/+/bb2279de3ca08408433dc82496b60ecf4e2b9520"},{"type":"FIX","url":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/fa24917525b708bd653533120c7685a383d35ba1"}],"affected":[{"package":{"name":"platform/frameworks/base","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-09-01"}]}],"versions":["10"],"ecosystem_specific":{"types":["ID"],"vanir_signatures":[{"digest":{"threshold":0.9,"line_hashes":["149314389111778334465882658059004023231","193741661406318947171187996572299546511","86997667788922410104420909344407444020"]},"id":"ASB-A-181053462-d3a44dd9","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/873d4bffb26cf2673ddfa949928186c7c99dd564","target":{"file":"telephony/java/android/telephony/SubscriptionInfo.java"},"deprecated":false}],"fixes":["https://android.googlesource.com/platform/frameworks/base/+/873d4bffb26cf2673ddfa949928186c7c99dd564"],"severity":"High","spl":"2021-09-01"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-181053462.json"}},{"package":{"name":"platform/frameworks/opt/telephony","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-09-01"}]}],"versions":["10"],"ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/frameworks/opt/telephony/+/7264df380483454f0e24c5028df129d58d41390a"],"severity":"High","spl":"2021-09-01","types":["ID"],"vanir_signatures":[{"signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/7264df380483454f0e24c5028df129d58d41390a","target":{"file":"src/java/com/android/internal/telephony/SubscriptionController.java"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["73058060908721465202703923844009171842","106761157209031659183026918433137740754","166020037415362058612189230784165644485","287162283271674705512625053057635952635"]},"id":"ASB-A-181053462-686f38c2","signature_type":"Line"},{"source":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/7264df380483454f0e24c5028df129d58d41390a","target":{"file":"src/java/com/android/internal/telephony/SubscriptionController.java","function":"conditionallyRemoveIdentifiers"},"deprecated":false,"digest":{"function_hash":"19943514698718854185069749005214643415","length":188},"id":"ASB-A-181053462-a39429d7","signature_type":"Function","signature_version":"v1"}]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-181053462.json"}},{"package":{"name":"platform/frameworks/base","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2021-09-01"}]}],"versions":["11"],"ecosystem_specific":{"vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["149314389111778334465882658059004023231","193741661406318947171187996572299546511","86997667788922410104420909344407444020"],"threshold":0.9},"id":"ASB-A-181053462-10eaf862","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/121c969e22950cd966bb99b101c1e7e50084ae3c","target":{"file":"telephony/java/android/telephony/SubscriptionInfo.java"}}],"fixes":["https://android.googlesource.com/platform/frameworks/base/+/121c969e22950cd966bb99b101c1e7e50084ae3c"],"severity":"High","spl":"2021-09-01","types":["ID"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-181053462.json"}},{"package":{"name":"platform/frameworks/opt/telephony","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2021-09-01"}]}],"versions":["11"],"ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/frameworks/opt/telephony/+/1399361f2e553a673b4a0d90131c44ee2fe0e32a"],"severity":"High","spl":"2021-09-01","types":["ID"],"vanir_signatures":[{"signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/1399361f2e553a673b4a0d90131c44ee2fe0e32a","target":{"file":"src/java/com/android/internal/telephony/SubscriptionController.java","function":"conditionallyRemoveIdentifiers"},"deprecated":false,"digest":{"function_hash":"59640212500690590811746554702991855553","length":251},"id":"ASB-A-181053462-601c01dd"},{"deprecated":false,"digest":{"line_hashes":["73058060908721465202703923844009171842","106761157209031659183026918433137740754","336981098826025419991630921647913478704","248274745367760804006245785737486142426"],"threshold":0.9},"id":"ASB-A-181053462-65a6f1ca","signature_type":"Line","signature_version"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