{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:mit:kerberos_5:1.13:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.13.1:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.13.2:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.13.3:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.13.4:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.13.5:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.13.6:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.14:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.14.1:*:*:*:*:*:*:*",
              "cpe:2.3:a:mit:kerberos_5:1.14.2:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "1.13"
              },
              {
                "last_affected": "1.13"
              },
              {
                "introduced": "1.13.1"
              },
              {
                "last_affected": "1.13.1"
              },
              {
                "introduced": "1.13.2"
              },
              {
                "last_affected": "1.13.2"
              },
              {
                "introduced": "1.13.3"
              },
              {
                "last_affected": "1.13.3"
              },
              {
                "introduced": "1.13.4"
              },
              {
                "last_affected": "1.13.4"
              },
              {
                "introduced": "1.13.5"
              },
              {
                "last_affected": "1.13.5"
              },
              {
                "introduced": "1.13.6"
              },
              {
                "last_affected": "1.13.6"
              },
              {
                "introduced": "1.14"
              },
              {
                "last_affected": "1.14"
              },
              {
                "introduced": "1.14.1"
              },
              {
                "last_affected": "1.14.1"
              },
              {
                "introduced": "1.14.2"
              },
              {
                "last_affected": "1.14.2"
              }
            ],
            "source": [
              "CPE_STRING",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "3165ae71ba685ff0f105383a2c2a27a76e8efac4"
            },
            {
              "last_affected": "68a03305111126a183dbd3779497ed9e00be6e0a"
            },
            {
              "fixed": "93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7"
            }
          ],
          "repo": "https://github.com/krb5/krb5",
          "type": "GIT"
        }
      ],
      "versions": [
        "1.13",
        "1.13.1",
        "1.13.2",
        "1.13.3",
        "1.13.4",
        "1.13.5",
        "1.13.6",
        "1.14",
        "1.14.1",
        "1.14.2"
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:mit:kerberos_5:1.13:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "1.13"
          },
          {
            "last_affected": "1.13"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "mit:kerberos_5"
      }
    ]
  },
  "details": "The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.",
  "id": "CVE-2016-3120",
  "modified": "2026-07-08T05:37:59.840265785Z",
  "published": "2016-08-01T02:59:12.370Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-updates/2016-09/msg00035.html"
    },
    {
      "type": "WEB",
      "url": "http://web.mit.edu/kerberos/krb5-1.13/"
    },
    {
      "type": "WEB",
      "url": "http://web.mit.edu/kerberos/krb5-1.14/"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/92132"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1036442"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWL3KYFRJIX37EAM4DKCQQIQP2WBKL35/"
    },
    {
      "type": "ADVISORY",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-2591.html"
    },
    {
      "type": "REPORT",
      "url": "http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458"
    },
    {
      "type": "FIX",
      "url": "https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}