CVE-2023-21243 Denial of service in Android
A buffer overflow in Android's Passpoint configuration validation allows local attackers to cause a denial of service via a crafted config file.
- 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-2023-21243?
CVE-2023-21243 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, and only if a user opens a file or follows a link.
Official description
In validateForCommonR1andR2 of PasspointConfiguration.java, there is a possible way to inflate the size of a config file with no limits due to a buffer overflow. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation.
Weakness: CWE-120
Which versions are affected by CVE-2023-21243?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2023-21243?
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-2023-21243 being exploited?
There is no known exploitation of CVE-2023-21243 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-274445194, ASB-A-274445194, GHSA-5vx9-r389-x79h.