{
  "id": "CVE-2023-3326",
  "sourceIdentifier": "secteam@freebsd.org",
  "published": "2023-06-22T17:15:44.833",
  "lastModified": "2023-08-01T23:15:30.827",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a keytab is not provisioned on the system, pam_krb5 has no way to validate the response from the KDC, and essentially trusts the tgt provided over the network as being valid. In a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned, an attacker that is able to control both the password and the KDC responses can return a valid tgt, allowing authentication to occur for any user on the system.\n"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    },
    {
      "source": "secteam@freebsd.org",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-303"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "operator": "OR",
          "negate": false,
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  ],
  "references": [
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc",
      "source": "secteam@freebsd.org",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc",
      "source": "secteam@freebsd.org"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20230714-0005/",
      "source": "secteam@freebsd.org",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}