CVE-2023-29418 Memory corruption in n/a

Medium 6.5 Published 6 Apr 2023 Updated 5 Mar 2025

An out-of-bounds read in the bzip3 library allows attackers to cause denial of service or disclose sensitive memory contents.

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: Available

What is CVE-2023-29418?

CVE-2023-29418 is a medium-severity memory corruption vulnerability in n/a, published on 6 Apr 2023. 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

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an xwrite out-of-bounds read.

Weakness: CWE-125

Which versions are affected by CVE-2023-29418?

It affects 1 product.

Products include Bzip3 Project Bzip3.

How do I fix CVE-2023-29418?

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-2023-29418 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-29418 exists.

Sources

Also known as DEBIAN-CVE-2023-29418, GHSA-q597-3v27-cmvx, UBUNTU-CVE-2023-29418.