Vulnerability · Published Apr 6, 2023 · Assigned by mitre
CVE-2023-29420
Medium 6.5
In plain English
A medium-severity memory corruption in the bzip3 package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.9%top 40.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a crash caused by an invalid memmove in bz3_decode_block.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | bzip3 | 1.2.2-2 | DEBIAN-CVE-2023-29420 |
| Debian:13 | bzip3 | 1.2.2-2 | DEBIAN-CVE-2023-29420 |
| Debian:14 | bzip3 | 1.2.2-2 | DEBIAN-CVE-2023-29420 |
| Ubuntu:24.04:LTS | bzip3 | no fix listed | UBUNTU-CVE-2023-29420 |
Affected products (as reported)
Weakness: CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://github.com/kspalaiologos/bzip3/issues/92
- https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3
- https://github.com/kspalaiologos/bzip3/commit/bb06deb85f1c249838eb938e0dab271d4194f8fa
- FEDORA-2023-3a821e6e73 vendor-advisory
- FEDORA-2023-c08f9dfc16 vendor-advisory
- FEDORA-2023-3589ad1c55 vendor-advisory