OSV-2021-1663 Heap-buffer-overflow in ndlz4_decompress
A heap-buffer-overflow in the ndlz4_decompress function of the Blosc library allows attackers to cause memory corruption, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-1663?
OSV-2021-1663 is a memory corruption vulnerability in c-blosc2, published on 10 Dec 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42131
Crash type: Heap-buffer-overflow WRITE {*}
Crash state:
ndlz4_decompress
blosc_d
do_job
Which versions are affected by OSV-2021-1663?
1 open source package ship an affected version, including c-blosc2.
| Package | Affected | Fixed in |
|---|---|---|
c-blosc2 OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1663?
No fix has been published for OSV-2021-1663 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-2021-1663 being exploited?
There is no known exploitation of OSV-2021-1663 in the wild and no public exploit code.