OSV-2021-1420 Heap-buffer-overflow in unpack_16bit
A heap buffer overflow in the OpenEXR library allows attackers to execute arbitrary code or cause denial of service via crafted image files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2021-1420?
OSV-2021-1420 is a memory corruption vulnerability in openexr, published on 7 Oct 2021. It can only be exploited from the same machine or local network, 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=39623
Crash type: Heap-buffer-overflow WRITE {*}
Crash state:
unpack_16bit
exr_decoding_run
Imf_3_1::checkCoreFile
Which versions are affected by OSV-2021-1420?
1 open source package ship an affected version, including openexr.
| Package | Affected | Fixed in |
|---|---|---|
openexr OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1420?
No fix has been published for OSV-2021-1420 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-2021-1420 being exploited?
There is no known exploitation of OSV-2021-1420 in the wild and no public exploit code.