CVE-2020-27067 Use after free in Android
A race condition in the Android kernel's l2tp subsystem allows local attackers with system privileges to escalate privileges via a use-after-free vulnerability.
- 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-2020-27067?
CVE-2020-27067 is a medium-severity use after free vulnerability in Google Android, published on 15 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the l2tp subsystem, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152409173
Which versions are affected by CVE-2020-27067?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2020-27067?
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-2020-27067 being exploited?
There is no known exploitation of CVE-2020-27067 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as DEBIAN-CVE-2020-27067, GHSA-ghgp-g2w8-92pm, UBUNTU-CVE-2020-27067.