OSV-2021-2 Heap-buffer-overflow in Imf_2_5::FastHufDecoder::decode
A heap-buffer-overflow in the OpenEXR library allows attackers to cause denial of service or potentially execute code via malicious image 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-2021-2?
OSV-2021-2 is a memory corruption vulnerability in openexr, published on 1 Jan 2021. 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=29106
Crash type: Heap-buffer-overflow READ 2
Crash state:
Imf_2_5::FastHufDecoder::decode
Imf_2_5::hufUncompress
Imf_2_5::PizCompressor::uncompress
Which versions are affected by OSV-2021-2?
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-2021-2?
No fix has been published for OSV-2021-2 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-2021-2 being exploited?
There is no known exploitation of OSV-2021-2 in the wild and no public exploit code.