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.
Metrics
Affected Vendors & Products
References
History
No history.
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Status: PUBLISHED
Assigner: GitLab
Published:
Updated: 2024-08-03T18:37:18.446Z
Reserved: 2021-01-05T00:00:00
Link: CVE-2021-22212
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Status : Modified
Published: 2021-06-08T13:15:07.567
Modified: 2024-11-21T05:49:43.237
Link: CVE-2021-22212
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