CVE-2021-0923 Missing authorization in Android
A missing permission check in Android's Permission.java allows local attackers to gain internal permissions and escalate privileges without user interaction.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-0923?
CVE-2021-0923 is a high-severity missing authorization vulnerability in Google Android, published on 15 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In createOrUpdate of Permission.java, there is a possible way to gain internal permissions 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.Product: AndroidVersions: Android-12Android ID: A-195338390
Weakness: CWE-862
Which versions are affected by CVE-2021-0923?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0923?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-0923 being exploited?
There is no known exploitation of CVE-2021-0923 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-195338390, ASB-A-195338390, GHSA-vx4g-4h4f-5cmg.