OSV-2021-670 Heap-buffer-overflow in av1_free_cdef_buffers
A heap-buffer-overflow in the AV1 decoder allows attackers to cause crashes or potentially execute code via malicious video files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2021-670?
OSV-2021-670 is a memory corruption vulnerability in libaom, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33480
Crash type: Heap-buffer-overflow READ 8
Crash state:
av1_free_cdef_buffers
decoder_destroy
aom_codec_destroy
Which versions are affected by OSV-2021-670?
1 open source package ship an affected version, including libaom.
| Package | Affected | Fixed in |
|---|---|---|
libaom OSS-Fuzz | All versions | None |
How do I fix OSV-2021-670?
No fix has been published for OSV-2021-670 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-2021-670 being exploited?
There is no known exploitation of OSV-2021-670 in the wild and no public exploit code.