CVE-2023-21356 Memory corruption in Android

High 8.8 Published 30 Oct 2023 Updated 2 Aug 2024

Remote attackers can execute arbitrary code via Bluetooth due to an out-of-bounds write in Android, requiring no user interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-21356?

CVE-2023-21356 is a high-severity memory corruption vulnerability in Google Android, published on 30 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In Bluetooth, there is a possible out of bounds write due to a missing bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

Weakness: CWE-787

Which versions are affected by CVE-2023-21356?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-21356?

No fix has been published for CVE-2023-21356 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-21356 being exploited?

There is no known exploitation of CVE-2023-21356 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as GHSA-w2xh-r5gj-85gh.