CVE-2021-0434 Security feature bypass in Android
A malicious Bluetooth device can trick users into granting permissions via a misleading consent dialog, leading to local privilege escalation on Android.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-0434?
CVE-2021-0434 is a high-severity vulnerability in Google Android, published on 15 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In onReceive of BluetoothPermissionRequest.java, there is a possible phishing attack allowing a malicious Bluetooth device to acquire permissions based on insufficient information presented to the user in the consent dialog. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-9Android ID: A-167403112
Which versions are affected by CVE-2021-0434?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0434?
Apply the vendor's patch.
Is CVE-2021-0434 being exploited?
There is no known exploitation of CVE-2021-0434 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-167403112, ASB-A-167403112, GHSA-c8fq-442r-8x7h.