OSV-2022-644 Global-buffer-overflow in decode_CABAC_bit
A global buffer overflow in the CABAC bit 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-2022-644?
OSV-2022-644 is a memory corruption vulnerability in kimageformats, published on 28 Jul 2022. 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=49538
Crash type: Global-buffer-overflow READ 1
Crash state:
decode_CABAC_bit
read_coding_unit
read_coding_quadtree
Which versions are affected by OSV-2022-644?
1 open source package ship an affected version, including kimageformats.
| Package | Affected | Fixed in |
|---|---|---|
kimageformats OSS-Fuzz | All versions | None |
How do I fix OSV-2022-644?
No fix has been published for OSV-2022-644 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-2022-644 being exploited?
There is no known exploitation of OSV-2022-644 in the wild and no public exploit code.