CVE-2021-22212
CVE-2021-22212
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
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 · Media · EPSS 0,5% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
ntpsec
- Versiones
- =1.2.0: Afectada
Sin corrección publicada
ntpsec Debian:12
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.2.0+dfsg1-4
Actualiza a 1.2.0+dfsg1-4
ntpsec Debian:13
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.2.0+dfsg1-4
Actualiza a 1.2.0+dfsg1-4
ntpsec Debian:14
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.2.0+dfsg1-4
Actualiza a 1.2.0+dfsg1-4
Fuentes 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