{"id":"ASB-A-166667403", "published":"2021-01-01T00:00:00Z", "modified":"2026-06-19T15:21:58.810540849Z", "aliases":["CVE-2021-0321", "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.", "affected":[{"package":{"name":"platform/frameworks/base", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"11:0"}, {"fixed":"11:2021-01-01"}]}], "versions":["11"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898"], "severity":"High", "spl":"2021-01-01", "types":["ID"], "vanir_signatures":[{"deprecated":false, "digest":{"function_hash":"328253270580842359078835002729645875131", "length":528}, "id":"ASB-A-166667403-428b1cd9", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898", "target":{"file":"services/core/java/com/android/server/am/ActivityManagerService.java", "function":"enforceDumpPermissionForPackage"}}, {"deprecated":false, "digest":{"line_hashes":["66739392362753218442585105965303547325", "145926465871825836412424759016862391594", "329393497864843757273400944767997417391", "240352082606933695125583394349835098154", "178573031860012575606062721245589632733", "187143755928885058173661795639757861376", "89270393170113699491151210272260982806"], "threshold":0.9}, "id":"ASB-A-166667403-6e686f27", "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"}}]}}], "references":[{"type":"ADVISORY", "url":"https://source.android.com/security/bulletin/2021-01-01"}, {"type":"FIX", "url":"https://android.googlesource.com/platform/frameworks/base/+/b57d1409c52478d37f006145949be8b4591b9898"}]}