CVE-2021-45833 Memory corruption in n/a

Medium 5.5 Published 5 Jan 2022 Updated 4 Aug 2024

A stack-based buffer overflow in the HDF5 library allows attackers to cause a denial of service via crafted input.

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: Available

What is CVE-2021-45833?

CVE-2021-45833 is a medium-severity memory corruption vulnerability in Hdfgroup Hdf5, published on 5 Jan 2022. 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

A Stack-based Buffer Overflow Vulnerability exists in HDF5 1.13.1-1 via the H5D__create_chunk_file_map_hyper function in /hdf5/src/H5Dchunk.c, which causes a Denial of Service (context-dependent).

Weakness: CWE-787

Which versions are affected by CVE-2021-45833?

It affects 1 product.

Products include Hdfgroup Hdf5.

How do I fix CVE-2021-45833?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-45833 being exploited?

There is no known exploitation of CVE-2021-45833 in the wild and no public exploit code.

All Hdfgroup Hdf5 vulnerabilities

Sources

Also known as DEBIAN-CVE-2021-45833, ECHO-9994-51f5-3525, GHSA-x57p-jwp6-4v79, UBUNTU-CVE-2021-45833.