CVE-2021-22212
- State
- Published
- Severity
- 4.0 Medium
- Published
- Jun 8, 2021
- Updated
- Aug 3, 2024
- Reserved
- Jan 5, 2021
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.0 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N | GitLab |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
ntpsecNTPsec |
|
References
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