ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' characters. ntpd then either pads, shortens the key, or fails to load these keys entirely, depending on the key type and the placement of the '#'. This results in the administrator not being able to use the keys as expected or the keys are shorter than expected and easier to brute-force, possibly resulting in MITM attacks between ntp clients and ntp servers. For short AES128 keys, ntpd generates a warning that it is padding them.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published: 2021-06-08T12:07:02

Updated: 2024-08-03T18:37:18.446Z

Reserved: 2021-01-05T00:00:00

Link: CVE-2021-22212

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-06-08T13:15:07.567

Modified: 2023-11-07T03:30:10.640

Link: CVE-2021-22212

cve-icon Redhat

No data.