CVE-2023-39976

CRITICAL EPSS 57.9%
Published Aug 8, 20232y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Aug 8, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
57.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-120

Affected Products 1

VendorProductVersionRange
clusterlabslibqb* <2.0.8

References 4

  • github.com https://github.com/ClusterLabs/libqb/commit/1bbaa929b77113532785c408dd1b41cd0521ffc8
    Patch
  • github.com https://github.com/ClusterLabs/libqb/compare/v2.0.7...v2.0.8
    Not Applicable
  • github.com https://github.com/ClusterLabs/libqb/pull/490
    Patch
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KECNF7LFBPE57XSBT6EM7ACVMIBP63WH/

Remediation

  • github.com https://github.com/ClusterLabs/libqb/commit/1bbaa929b77113532785c408dd1b41cd0521ffc8
    Patch
  • github.com https://github.com/ClusterLabs/libqb/pull/490
    Patch