CVE-2021-0985 Missing authorization in Android

High 7.8 Published Updated

A missing permission check in Android's AlertReceiver allows local attackers to dismiss system dialogs, leading to privilege escalation 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-2021-0985?

CVE-2021-0985 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 onReceive of AlertReceiver.java, there is a possible way to dismiss system dialog 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-190403923

Weakness: CWE-862

Which versions are affected by CVE-2021-0985?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-0985?

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-2021-0985 being exploited?

There is no known exploitation of CVE-2021-0985 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as A-190403923, GHSA-x39c-h6fx-jr3f, PUB-A-190403923.

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