CVE-2023-21240 Denial of service in Android
A local attacker can cause a boot loop via resource exhaustion in Android's Policy.java, resulting in denial of service 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-2023-21240?
CVE-2023-21240 is a medium-severity denial of service vulnerability in Google Android, published on 12 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Policy of Policy.java, there is a possible boot loop due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
Weakness: CWE-400
Which versions are affected by CVE-2023-21240?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2023-21240?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-21240 being exploited?
There is no known exploitation of CVE-2023-21240 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-275340417, ASB-A-275340417, GHSA-672c-38pw-m2m5.