CVE-2023-29415

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-04-06 · updated 2026-06-17

Description

An issue was discovered in libbzip3.a in bzip3 before 1.3.0. A denial of service (process hang) can occur with a crafted archive because bzip3 does not follow the required procedure for interacting with libsais.

Affected products

Bzip3 Project Bzip3: before 1.3.0 — fixed in 1.3.0
Debian Linux: 12.0

How to fix

Upgrade to a fixed version: Bzip3 Project Bzip3 1.3.0. Check the vendor advisory for mitigations.

References

https://github.com/kspalaiologos/bzip3/compare/1.2.3...1.3.0
https://github.com/kspalaiologos/bzip3/issues/95
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/
https://security-tracker.debian.org/tracker/CVE-2023-29415
https://github.com/kspalaiologos/bzip3/compare/1.2.3...1.3.0
https://github.com/kspalaiologos/bzip3/issues/95
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/
https://security-tracker.debian.org/tracker/CVE-2023-29415

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