OSV-2020-1186 Index-out-of-bounds in WelsDec::DecodeCurrentAccessUnit
An index-out-of-bounds error in the OpenH264 decoder allows attackers to cause a crash or potentially execute arbitrary code via crafted 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-2020-1186?
OSV-2020-1186 is a memory corruption vulnerability in openh264, published on 22 Jul 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=12668
Crash type: Index-out-of-bounds
Crash state:
WelsDec::DecodeCurrentAccessUnit
WelsDec::ConstructAccessUnit
WelsDecodeBs
Which versions are affected by OSV-2020-1186?
1 open source package ship an affected version, including openh264.
| Package | Affected | Fixed in |
|---|---|---|
openh264 OSS-Fuzz | All versions | None |
How do I fix OSV-2020-1186?
No fix has been published for OSV-2020-1186 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-2020-1186 being exploited?
There is no known exploitation of OSV-2020-1186 in the wild and no public exploit code.