CVE-2021-0705 Privilege escalation in Android
Local attackers can bypass background service restrictions to maintain foreground status and retain permissions, leading to privilege escalation on Android devices.
- 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-2021-0705?
CVE-2021-0705 is a high-severity vulnerability in Google Android, published on 22 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In sanitizeSbn of NotificationManagerService.java, there is a possible way to keep service running in foreground and keep granted permissions due to Bypass of Background Service Restrictions. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-10Android ID: A-185388103
Which versions are affected by CVE-2021-0705?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0705?
Apply the vendor's patch.
Is CVE-2021-0705 being exploited?
There is no known exploitation of CVE-2021-0705 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Google Android
Sources
Also known as A-185388103, ASB-A-185388103, GHSA-3wrw-vxmq-wm2c.