CVE-2023-21034

What it actually does

Permissions bypass in multiple SensorService.cpp functions allows unauthorized access to accurate sensor data, enabling local privilege escalation from user context without interaction.

Why it matters to the business

Android devices running version 13 face elevated risk of unauthorized sensor data exposure, which can compromise user privacy and enable further local attacks; the issue remains unfixed in listed versions with low observed exploitation likelihood.

How an attack unfolds

An attacker with an installed app executes code that invokes the vulnerable sensor service functions, bypassing permission checks to read high-accuracy sensor values and potentially chain into broader privilege escalation on the device.

How to fix it

Update affected Android devices to the latest available version beyond Android-13 where the sensor service permissions checks have been corrected; apply vendor security patches promptly.

How to confirm the fix worked

Confirm devices are running patched Android releases; review app permission enforcement logs and test sensor access controls with standard developer tools to verify bypass is closed.

Typical attack path

1. Obtain user-level code execution via a malicious or compromised app
2. Invoke SensorService functions to trigger the permissions bypass
3. Read accurate sensor data without required permissions
4. Use obtained data to support further local attacks or information gathering

How to detect it

Examine Android system logs for unexpected SensorService calls from non-privileged apps; look for permission audit failures or anomalous sensor data access patterns in device logs.

What your security team should do

• Prioritize patching Android-13 devices to current releases
• Monitor for any future EPSS increase or KEV addition given the stable low score
• Enforce least-privilege app permissions and review sensor data usage in enterprise policies