Buffer overflow in Bzip3 Project
CVE-2023-29421
An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.
Vulnerability class: Buffer Overflow
EPSS: 0.009 (56.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Bzip3_project Bzip3
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Release Notes)
- cve@mitre.org (Exploit, Patch, Issue Tracking)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
Frequently asked questions
- What is CVE-2023-29421?
- CVE-2023-29421 is a high-severity vulnerability in Bzip3 Project, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2023-04-06.
- How severe is CVE-2023-29421?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-29421 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.