CVE-2021-22212
CVE-2021-22212
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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.
CVSS 4.0 · Moyenne · EPSS 0,5% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
ntpsec
- Versions du logiciel
- =1.2.0: Concernée
Aucun correctif publié
ntpsec Debian:12
- Plages de versions concernées
- ECOSYSTEM: < 1.2.0+dfsg1-4
Mettez à jour vers 1.2.0+dfsg1-4
ntpsec Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 1.2.0+dfsg1-4
Mettez à jour vers 1.2.0+dfsg1-4
ntpsec Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 1.2.0+dfsg1-4
Mettez à jour vers 1.2.0+dfsg1-4
Sources originales
- https://gitlab.com/NTPsec/ntpsec/-/issues/699
- https://bugzilla.redhat.com/show_bug.cgi?id=1955859
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.json
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/
- https://nvd.nist.gov/vuln/detail/CVE-2021-22212