CVE-2023-29419

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of...

6.5 MediumFix available

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.89%Up 0.8 points since Apr 6, 2023

What each source reports

NVD Score used 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: CVE-2023-29419
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

CVE List 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: CVE-2023-29419
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2023-32988 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: EUVD-2023-32988
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-qrqf-2crr-jvqf 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of...

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: GHSA-qrqf-2crr-jvqf
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

OSV 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: CVE-2023-29419
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-29419 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: DEBIAN-CVE-2023-29419
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-29419 6.5

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.

Record: UBUNTU-CVE-2023-29419
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

bzip3 project bzip3

Affected packages

Affected packages
Package	Affected	Fixed
`bzip3` Debian:12	before 1.2.2-2	1.2.2-2
`bzip3` Debian:13	before 1.2.2-2	1.2.2-2
`bzip3` Debian:14	before 1.2.2-2	1.2.2-2
`bzip3` Ubuntu:24.04:LTS	All versions, plus listed versions 1.3.1-11.3.2-11.4.0-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-29419 is a medium vulnerability (CVSS 6.5) in Bzip3 Project Bzip3, published April 6, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. Fixed in bzip3 1.2.2-2.

References

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