OSV-2020-2297 Heap-double-free in WelsCommon::WelsFree
A heap double-free vulnerability in the OpenH264 library allows attackers to cause denial of service or potentially execute arbitrary 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-2020-2297?
OSV-2020-2297 is an use after free vulnerability in openh264, published on 30 Dec 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=29073
Crash type: Heap-double-free
Crash state:
WelsCommon::WelsFree
WelsCommon::CMemoryAlign::WelsFree
WelsDec::FreePicture
Which versions are affected by OSV-2020-2297?
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-2020-2297?
No fix has been published for OSV-2020-2297 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2020-2297 being exploited?
There is no known exploitation of OSV-2020-2297 in the wild and no public exploit code.