{"id":"ASB-A-166667403","details":"In enforceDumpPermissionForPackage of ActivityManagerService.java, there is a possible way to determine if a package is installed due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-166667403","CVE-2021-0321"],"modified":"2026-10-01T16:32:22.277233583Z","published":"2021-01-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2021-01-01"},{"type":"FIX","url":"https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898"}],"affected":[{"package":{"name":"platform/frameworks/base","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2021-01-01"}]}],"versions":["11"],"ecosystem_specific":{"spl":"2021-01-01","types":["ID"],"vanir_signatures":[{"id":"ASB-A-166667403-428b1cd9","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898","target":{"function":"enforceDumpPermissionForPackage","file":"services/core/java/com/android/server/am/ActivityManagerService.java"},"deprecated":false,"digest":{"function_hash":"328253270580842359078835002729645875131","length":528}},{"signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898","target":{"file":"services/core/java/com/android/server/am/ActivityManagerService.java"},"deprecated":false,"digest":{"line_hashes":["66739392362753218442585105965303547325","145926465871825836412424759016862391594","329393497864843757273400944767997417391","240352082606933695125583394349835098154","178573031860012575606062721245589632733","187143755928885058173661795639757861376","89270393170113699491151210272260982806"],"threshold":0.9},"id":"ASB-A-166667403-6e686f27"}],"fixes":["https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898"],"severity":"High"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-166667403.json"}}],"schema_version":"1.9.0"}