CVE-2023-4012 - CVE House
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Status published High CVE-2023-4012

Incomplete Internal State Distinction in ntpsec

Vulnerability Description

ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • R.L. Nicholas

References

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CVE-2021-22212
ntpkeygen can generate keys that ntpd fails to parse. NTPsec...
Medium 4

Affected Vendor

Affected Software

ntpsec
Vulnerable Versions:
1.2.2

Timeline

Official Publish: August 7th, 2023
Last Modified: June 22nd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-372

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.