{"id":"PUB-A-193800652", "published":"2021-12-01T00:00:00Z", "modified":"2026-05-15T15:01:37.959123768Z", "aliases":["CVE-2021-1025", "A-193800652"], "details":"In hasNamedWallpaper of WallpaperManagerService.java, there is a possible way to determine whether an app is installed, without query permissions, due to a missing permission check. 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":"12:0"}, {"fixed":"12:2021-12-01"}]}], "versions":["12"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/frameworks/base/+/c7de46c8e45b0a81da65bb63220f1e502cf04921"], "severity":"Moderate", "spl":"2021-12-01", "types":["ID"], "vanir_signatures":[{"deprecated":false, "digest":{"line_hashes":["39275217561838728963992075719630011395", "60949154431976449709105693195531616887", "261464316904973385258147136598452934597", "227214050609644533085085003222725773304", "175625025981031983434455603619840749403", "98874412179968923432749838123742731022", "181300433046089138343853969056757871617", "238714527340987671693651969324152567441", "107399261705791472036583292945930006355"], "threshold":0.9}, "id":"PUB-A-193800652-c69b02ce", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/frameworks/base/+/c7de46c8e45b0a81da65bb63220f1e502cf04921", "target":{"file":"services/core/java/com/android/server/wallpaper/WallpaperManagerService.java"}}, {"deprecated":false, "digest":{"function_hash":"260323520536712876715714027822045432317", "length":562}, "id":"PUB-A-193800652-e10ef509", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/platform/frameworks/base/+/c7de46c8e45b0a81da65bb63220f1e502cf04921", "target":{"file":"services/core/java/com/android/server/wallpaper/WallpaperManagerService.java", "function":"hasNamedWallpaper"}}]}}], "references":[{"type":"ADVISORY", "url":"https://source.android.com/security/bulletin/2021-12-01"}, {"type":"FIX", "url":"https://android.googlesource.com/platform/frameworks/base/+/c7de46c8e45b0a81da65bb63220f1e502cf04921"}]}