CVE-2021-0973 Security feature bypass in Android
Attackers can bypass file URI attachment restrictions via case sensitivity flaws, leading to local information disclosure on Android devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-0973?
CVE-2021-0973 is a medium-severity vulnerability in Google Android, published on 15 Dec 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 isFileUri of UriUtil.java, there is a possible way to bypass ignoring file://URI attachment due to improper handling of case sensitivity. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-197328178
Weakness: CWE-178
Which versions are affected by CVE-2021-0973?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0973?
Apply the vendor's patch.
Is CVE-2021-0973 being exploited?
There is no known exploitation of CVE-2021-0973 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-197328178, GHSA-52qv-5pm8-p78h, PUB-A-197328178.