CVE-2023-29421 Memory corruption in n/a
An out-of-bounds write in the bzip3 library allows attackers to execute arbitrary code or cause denial of service via crafted compressed data.
- 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-2023-29421?
CVE-2023-29421 is a high-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 out-of-bounds write in bz3_decode_block.
Weakness: CWE-787
Which versions are affected by CVE-2023-29421?
It affects 1 product.
Products include Bzip3 Project Bzip3.
How do I fix CVE-2023-29421?
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-2023-29421 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-29421 exists.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2023-29421, GHSA-jxf3-h258-gvf9, UBUNTU-CVE-2023-29421.