OSV-2021-380 Heap-buffer-overflow in ih264d_fill_bs1_16x16mb_pslice
A heap buffer overflow in the H.264 decoder allows attackers to cause denial of service or potentially execute code via crafted media 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-2021-380?
OSV-2021-380 is a memory corruption vulnerability in libavc, published on 12 Feb 2021. 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=30801
Crash type: Heap-buffer-overflow READ 8
Crash state:
ih264d_fill_bs1_16x16mb_pslice
ih264d_compute_bs_non_mbaff_thread
ih264d_recon_deblk_slice
Which versions are affected by OSV-2021-380?
1 open source package ship an affected version, including libavc.
| Package | Affected | Fixed in |
|---|---|---|
libavc OSS-Fuzz | All versions | None |
How do I fix OSV-2021-380?
No fix has been published for OSV-2021-380 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-2021-380 being exploited?
There is no known exploitation of OSV-2021-380 in the wild and no public exploit code.