Critical severity · published Aug 8, 2023
CVE-2023-39976
log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered
9.8
CVSS
1.2%
EPSS
No
On KEV
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:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libqb · Clusterlabs
before 2.0.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-39976
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-39976
Patch
https://github.com/ClusterLabs/libqb/commit/1bbaa929b77113532785c408dd1b41cd0521ffc8
Not Applicable
https://github.com/ClusterLabs/libqb/compare/v2.0.7...v2.0.8
Patch
https://github.com/ClusterLabs/libqb/pull/490
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KECNF7LFBPE57XSBT6EM7ACVMIBP63WH/
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