CVE-2021-0391 Security feature bypass in Android
Attackers can bypass permissions to learn account existence via tapjacking, leading to local privilege escalation on Android devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-0391?
CVE-2021-0391 is a high-severity vulnerability in Google Android, published on 10 Mar 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 onCreate() of ChooseTypeAndAccountActivity.java, there is a possible way to learn the existence of an account, without permissions, due to a tapjacking/overlay attack. This could lead to local escalation of privilege with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11 Android-8.1 Android-9 Android-10Android ID: A-172841550
Weakness: CWE-1021
Which versions are affected by CVE-2021-0391?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0391?
Apply the vendor's patch.
Is CVE-2021-0391 being exploited?
There is no known exploitation of CVE-2021-0391 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Google Android
Sources
Also known as A-172841550, ASB-A-172841550, GHSA-6f65-gqxf-jwmr.