CVE-2021-1025: Medium severity Google Android vulnerability
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
android/platform/frameworks/baseto a version that resolves this vulnerability.Fixed in 12:2021-12-01
Event History
Frequently Asked Questions
Who is exposed to this issue?
Devices running Android 12 are identified as affected. The issue is in the Android framework's WallpaperManagerService component.
What does an attacker need to exploit it?
An attacker needs local access through an app with low privileges. No user interaction or additional execution privileges are required.
What information can be disclosed?
A vulnerable app may be able to determine whether another app is installed despite lacking the normal query permission.
Does this affect confidentiality, integrity, or availability?
The reported impact is information disclosure affecting confidentiality. No integrity or availability impact is indicated by the supplied severity vector.