CVE-2020-0437 Missing authorization in Android
A missing permission check in Android's CellBroadcastReceiver allows local attackers to cause a denial of service for emergency alerts 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-2020-0437?
CVE-2020-0437 is a medium-severity missing authorization vulnerability in Google Android, published on 10 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In CellBroadcastReceiver's intent handlers, there is a possible denial of service due to a missing permission check. This could lead to local denial of service of emergency alerts with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.0 Android-8.1 Android-9 Android-10 Android-11Android ID: A-162741784
Weakness: CWE-862
Which versions are affected by CVE-2020-0437?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2020-0437?
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-2020-0437 being exploited?
There is no known exploitation of CVE-2020-0437 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-162741784, ASB-A-162741784, GHSA-4gcx-44xc-7cc7.