CVE-2021-0563 Memory corruption in Android
A heap buffer overflow in Android's H.264 encoder allows local attackers to read sensitive memory without user interaction or elevated privileges.
- 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-2021-0563?
CVE-2021-0563 is a medium-severity memory corruption vulnerability in Google Android, published on 22 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In ih264e_fmt_conv_422i_to_420sp of ih264e_fmt_conv.c, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-172908358
Weakness: CWE-125
Which versions are affected by CVE-2021-0563?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0563?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-0563 being exploited?
There is no known exploitation of CVE-2021-0563 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-172908358, GHSA-27xw-w55h-qcr4, PUB-A-172908358.