OSV-2020-303 UNKNOWN READ in dav1d_put_bilin_avx2
An out-of-bounds read in the dav1d AV1 decoder can cause a crash, potentially leading to denial of service for applications processing malicious video files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-303?
OSV-2020-303 is a memory corruption vulnerability in dav1d, published on 30 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16954
Crash type: UNKNOWN READ
Crash state:
dav1d_put_bilin_avx2
Which versions are affected by OSV-2020-303?
1 open source package ship an affected version, including dav1d.
| Package | Affected | Fixed in |
|---|---|---|
dav1d OSS-Fuzz | All versions | None |
How do I fix OSV-2020-303?
No fix has been published for OSV-2020-303 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2020-303 being exploited?
There is no known exploitation of OSV-2020-303 in the wild and no public exploit code.