CVE-2020-27059 Security feature bypass in Android

High 7.8 Published 11 Jan 2021 Updated 4 Aug 2024

Attackers can bypass fingerprint authentication via tapjacking to achieve local privilege escalation on Android devices.

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: None listed

What is CVE-2020-27059?

CVE-2020-27059 is a high-severity vulnerability in Google Android, published on 11 Jan 2021. 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 onAuthenticated of AuthenticationClient.java, there is a possible tapjacking attack when requesting the user's fingerprint due to an overlaid window. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android; Versions: Android-8.0, Android-8.1, Android-9, Android-10, 11; Android ID: A-159249069.

Weakness: CWE-1021

Which versions are affected by CVE-2020-27059?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2020-27059?

No fix has been published for CVE-2020-27059 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-27059 being exploited?

There is no known exploitation of CVE-2020-27059 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as GHSA-v2jq-h62v-wr47.