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CVE-2023-29416

MEDIUM
6.5
CVSS Score
Published: April 6, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:50 AM UTC
1 product affected across 1 vendorBZIP3

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

An issue was discovered in libbzip3.a in bzip3 before 1.3.0. A bz3_decode_block out-of-bounds write can occur with a crafted archive because bzip3 does not follow the required procedure for interacting with libsais.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

BZIP3· BZIP3 Project
95%
v < 1.3.0
Affected range stops below 1.3.0, so it looks safe — our inference, not a vendor statement

References (6)

Patch
Source: [email protected]
https://github.com/kspalaiologos/bzip3/commit/bfa5bf82b53715dfedf048e5859a46cf248668ff
Release Notes
Source: [email protected]
https://github.com/kspalaiologos/bzip3/compare/1.2.3...1.3.0
ExploitIssue TrackingPatch
Source: [email protected]
https://github.com/kspalaiologos/bzip3/issues/92
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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