AlwaysOnHotwordDetector allows hotword detection without CAPTURE_AUDIO_HOTWORD permission

2022-11-0100:00:00

Google

osv.dev

alwaysonhotworddetector

microphone

permission check

exploitation

privilege escalation

background access

security risk

software

CVSS3

3.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

AI Score

6.7

Confidence

High

EPSS

Percentile

5.1%

JSON

In AlwaysOnHotwordDetector of AlwaysOnHotwordDetector.java, there is a possible way to access the microphone from the background due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.