Security advisory

{
  "id": "aecfe07eeb672970b766f94b4846cb75aafb48f61b6f5dd2ef730da0c7170410",
  "url": "https://osv.dev/vulnerability/CVE-2017-11103",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-11103",
    "summary": "Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.",
    "evidence": "osv:CVE-2017-11103",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-11103",
      "aliases": [
        "CVE-2017-11103"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/heimdal/heimdal",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a3d72c604378e0bff787cc426f2b17f75b112dce"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a3d72c604378e0bff787cc426f2b17f75b112dce"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "heimdal-7.4.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "heimdal-1.3.0pre1",
            "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-2017-11103.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/samba-team/samba",
              "type": "GIT",
              "events": [
                {
                  "introduced": "df33344d8eb40221d60c99931690703a11d91bc2"
                },
                {
                  "fixed": "9fb0aa56baf317c5bf18417c5516f951207af82d"
                },
                {
                  "introduced": "916fab083a8cb5c10365da7f3a85d0bbfde4a30e"
                },
                {
                  "fixed": "6e6361ee4fd28098638850e3eda3d4ac2c3396f4"
                },
                {
                  "introduced": "f17816a4ae2bb0ed45561347a4c578ca9ab28ccf"
                },
                {
                  "fixed": "55d71509595075a17eb2baf0d89c4801ba2f03f3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.4.15"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.5.0"
                      },
                      {
                        "fixed": "4.5.12"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.6.0"
                      },
                      {
                        "fixed": "4.6.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "samba-4.5.11",
            "samba-4.6.5",
            "samba-4.6.3",
            "samba-4.5.9",
            "samba-4.6.0",
            "samba-4.5.6",
            "samba-4.5.5",
            "samba-4.5.4",
            "samba-4.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-11103.json"
          }
        }
      ],
      "modified": "2026-10-24T10:47:23.576252552Z",
      "provider": "osv",
      "references": [
        "https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0",
        "https://support.apple.com/HT208112",
        "https://support.apple.com/HT208144",
        "https://support.apple.com/HT208221",
        "https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc",
        "https://www.orpheus-lyre.info/",
        "https://www.samba.org/samba/security/CVE-2017-11103.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "apple:iphone_os",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "11.0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "apple:mac_os_x",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "10.13.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  },
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2017-11103",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441187,
  "published_at": "2017-07-13T13:29:00.173+00:00"
}