Security advisory

{
  "id": "cf6675ed29647cdd89014fcb7d6eb0d31c0d9797a4084acda24848c7aed06699",
  "url": "https://osv.dev/vulnerability/CVE-2019-12098",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-12098",
    "summary": "In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5_init_creds_step in lib/krb5/init_creds_pw.c.",
    "evidence": "osv:CVE-2019-12098",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-12098",
      "aliases": [
        "CVE-2019-12098"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/heimdal/heimdal",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "bbafe725f10b6bfd60e4d411ba08719b632e3043"
                },
                {
                  "fixed": "2f7f3d9960aa6ea21358bdf3687cee5149aa35cf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.6.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2f7f3d9960aa6ea21358bdf3687cee5149aa35cf"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bbafe725f10b6bfd60e4d411ba08719b632e3043"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "heimdal-7.6.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "heimdal-1.3.0pre1",
            "heimdal-7.5.0",
            "heimdal-7.4.0",
            "heimdal-7.3.0",
            "heimdal-7.2.0",
            "heimdal-7.1.0",
            "heimdal-7.0.3",
            "heimdal-7.0.2",
            "heimdal-7.0.1",
            "heimdal-7.1rc1",
            "git2svn-syncpoint-master",
            "heimdal-1.5pre2",
            "heimdal-1.5pre1",
            "upstream-1.4.0+git20110220.dfsg.1",
            "upstream-1.4.0+git20101228.dfsg.1",
            "heimdal-1.3.0rc1",
            "heimdal-1.3.0pre11",
            "heimdal-1.3.0pre10",
            "heimdal-1.3.0pre9",
            "heimdal-1.3.0pre8",
            "heimdal-1.3.0pre7",
            "heimdal-1.3.0pre6",
            "heimdal-1.3.0pre5",
            "heimdal-1.3.0pre4",
            "heimdal-1.3.0pre3",
            "switch-from-svn-to-git"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12098.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-12098-3473ff51",
                "digest": {
                  "length": 6746,
                  "function_hash": "239451779831776701030370729553326217963"
                },
                "source": "https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf",
                "target": {
                  "file": "lib/krb5/init_creds_pw.c",
                  "function": "krb5_init_creds_step"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-12098-81d6eb0e",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "157905797815404682526821631083992957802",
                    "77077079028435348282945182426218165738",
                    "232278302168403443626434313658558027612"
                  ]
                },
                "source": "https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf",
                "target": {
                  "file": "lib/krb5/pkinit.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-12098-eccdb06f",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "94971240621567312815457331887032315308",
                    "80927413706729359648894526490031709185",
                    "77888480259620153279995465692430115069",
                    "120247920660774625577499905939642226608"
                  ]
                },
                "source": "https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf",
                "target": {
                  "file": "lib/krb5/init_creds_pw.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:27:19Z"
          }
        }
      ],
      "modified": "2026-10-20T13:27:19.258083785Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GIXEDVVMPD6ZAJSMI2EZ7FNEIVNWE5PD/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SLXXIF4LOQEAEDAF4UGP2AO6WDNTDFUB/",
        "https://github.com/heimdal/heimdal/releases/tag/heimdal-7.6.0",
        "https://seclists.org/bugtraq/2019/Jun/1",
        "https://www.debian.org/security/2019/dsa-4455",
        "https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf",
        "https://github.com/heimdal/heimdal/compare/3e58559...bbafe72"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  },
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:opensuse:backports_sle:15.0:-:*:*:*:*:*:*",
              "cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:backports_sle",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.0-NA"
                  },
                  {
                    "last_affected": "15.0-NA"
                  },
                  {
                    "introduced": "15.0-sp1"
                  },
                  {
                    "last_affected": "15.0-sp1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
              "cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.0"
                  },
                  {
                    "last_affected": "15.0"
                  },
                  {
                    "introduced": "15.1"
                  },
                  {
                    "last_affected": "15.1"
                  },
                  {
                    "introduced": "42.3"
                  },
                  {
                    "last_affected": "42.3"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-12098",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387701,
  "published_at": "2019-05-15T23:29:00.277+00:00"
}