CVE-2021-1017 Missing authorization in Android

High 7.8 Published Updated

A missing permission check in Android's Bluetooth services allows local attackers to disable connections and escalate privileges.

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-2021-1017?

CVE-2021-1017 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, and only if a user opens a file or follows a link.

Official description

In AdapterService and GattService definition of AndroidManifest.xml, there is a possible way to disable bluetooth connection due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-182583850

Weakness: CWE-862

Which versions are affected by CVE-2021-1017?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-1017?

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-2021-1017 being exploited?

There is no known exploitation of CVE-2021-1017 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as A-182583850, GHSA-jrhj-xj93-7gg6, PUB-A-182583850.

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