CVE-2023-39976 — Classic Buffer Overflow in Libqb

CWE-120 — Classic Buffer OverflowCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer7 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.2%
top 62.09%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Clusterlabs LibqbDebian LibqbMsrc Azl3 Libqb 2.0.8-1 ON Azure Linux 3.0
Timeline
PublishedAug 8
Latest updateAug 28

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages4 packages

▶debiandebian/libqb< libqb 2.0.8-1 (forky)
▶NVDclusterlabs/libqb< 2.0.8
▶Debianclusterlabs/libqb< 2.0.8-1+1

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
OSV
CVE-2023-39976: log_blackbox↗2023-08-08
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GHSA
GHSA-4fvg-53ww-3r5g: log_blackbox↗2023-08-08
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📋Vendor Advisories

4
Ubuntu
Libqb vulnerability↗2023-08-28
▶
Microsoft
log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered.↗2023-08-08
▶
Red Hat
libqb: Buffer overflow in log_blackbox.c↗2023-08-08
▶
Debian
CVE-2023-39976: libqb - log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messa...↗2023
▶