cve-2021-22212
Vulnerability from cvelistv5
Published
2021-06-08 12:07
Modified
2024-08-03 18:37
Severity ?
4.0 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
Summary
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.
References
cve@gitlab.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1955859Issue Tracking, Patch, Third Party Advisory
cve@gitlab.comhttps://gitlab.com/NTPsec/ntpsec/-/issues/699Issue Tracking, Patch, Third Party Advisory
cve@gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.jsonThird Party Advisory
cve@gitlab.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1955859Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/NTPsec/ntpsec/-/issues/699Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.jsonThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/
Impacted products
Vendor Product Version
NTPsec ntpsec Version: =1.2.0
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