{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-22212",
        "ASSIGNER": "cve@gitlab.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "NTPsec",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "ntpsec",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "=1.2.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Improper filtering of special elements in ntpsec"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://gitlab.com/NTPsec/ntpsec/-/issues/699",
                "url": "https://gitlab.com/NTPsec/ntpsec/-/issues/699",
                "refsource": "MISC"
            },
            {
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1955859",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1955859",
                "refsource": "MISC"
            },
            {
                "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.json",
                "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.json",
                "refsource": "CONFIRM"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-3ffc890685",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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."
            }
        ]
    },
    "impact": {
        "cvss": {
            "vectorString": "AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N",
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "version": "3.1",
            "baseScore": 3.9,
            "baseSeverity": "MEDIUM"
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Maciej Zenczykowski"
        }
    ]
}