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CVE-2019-6442

MediumPublished

An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can write one byte out of bounds in ntpd via a malformed config request, related...

Published: Jan 16, 2019
Updated: Aug 4, 2024
Assigning CNA: mitre
Evidence observed: Jan 16, 2019

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS probability estimate

10.6%

Moderate · next 30 days

Percentile: 95.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can write one byte out of bounds in ntpd via a malformed config request, related to config_remotely in ntp_config.c, yyparse in ntp_parser.tab.c, and yyerror in ntp_parser.y.

Sources

NTPsec 1.1.2 - 'config' (Authenticated) Out-of-Bounds Write Denial of Service (PoC)Exploit
Magnus Klaaborg Stubman · linux · Jan 16, 2019

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