CVE-2023-21018 Use after free in Android
A use-after-free vulnerability in Android's unwinding component allows local attackers with system privileges to escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-21018?
CVE-2023-21018 is a medium-severity use after free vulnerability in Google Android, published on 24 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In UnwindingWorker of unwinding.cc, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-233338564
Weakness: CWE-416
Which versions are affected by CVE-2023-21018?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2023-21018?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-21018 being exploited?
There is no known exploitation of CVE-2023-21018 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-233338564, GHSA-855f-h3m2-hfc5, PUB-A-233338564.