CVE-2023-4012

Incomplete Internal State Distinction in ntpsec

View on CVE.org

Published Aug 7, 2023 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

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

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

NTPsec

ntpsec

unaffected

Version	Status	Constraints
`1.2.2`	affected	—

Configuration 1 [-]

cpe:2.3:a:ntpsec:ntpsec:1.2.2:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

Vendor Solution

Upgrade to version 1.2.2a or 1.2.3

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DSA	DSA-5466-1	ntpsec security update
EUVD	EUVD-2023-53905	ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.450% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1038422
https://gitlab.com/NTPsec/ntpsec/-/issues/794

History

May 11, 2026 5:15 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Ntpsec Ntpsec

Weaknesses

Sources

CVE record Updated: Jun 22, 2026, 4:07 AM

Status: PUBLISHED
Assigner: GitLab
Published: Aug 7, 2023, 5:30 PM
Updated: Jun 22, 2026, 4:07 AM
Reserved: Jul 31, 2023, 9:01 AM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 7:17 AM

Updated: Aug 2, 2024, 7:17 AM

NVD Updated: Jun 17, 2026, 6:36 AM

Status: Modified
Published: Aug 7, 2023, 6:15 PM
Modified: Jun 17, 2026, 6:36 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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