{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Heimdal ist eine Kerberos 5 Implementierung.\r\nUbuntu Linux ist die Linux Distribution des Herstellers Canonical.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann eine Schwachstelle in Heimdal und Ubuntu Linux ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux\n- Windows\n- Sonstiges",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2023-0310 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-0310.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-0310 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-0310"
      },
      {
        "category": "external",
        "summary": "Gentoo Linux Security Advisory GLSA-202310-06 vom 2023-10-08",
        "url": "https://security.gentoo.org/glsa/202310-06"
      },
      {
        "category": "external",
        "summary": "OSS Seclist.org Vulnerability Description vom 2023-02-08",
        "url": "https://www.openwall.com/lists/oss-security/2023/02/08/1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Advisory vom 2023-02-08",
        "url": "https://ubuntu.com/security/notices/USN-5849-1"
      }
    ],
    "source_lang": "en-US",
    "title": "Heimdal: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2023-10-08T22:00:00.000+00:00",
      "generator": {
        "date": "2024-02-15T17:13:24.249+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-0310",
      "initial_release_date": "2023-02-08T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-02-08T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2023-10-08T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Gentoo aufgenommen"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Gentoo Linux",
            "product": {
              "name": "Gentoo Linux",
              "product_id": "T012167",
              "product_identification_helper": {
                "cpe": "cpe:/o:gentoo:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Gentoo"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Heimdal 7.1",
            "product": {
              "name": "Open Source Heimdal 7.1",
              "product_id": "T026205",
              "product_identification_helper": {
                "cpe": "cpe:/a:heimdal:heimdal:7.1"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Ubuntu Linux 20.04 LTS",
                "product": {
                  "name": "Ubuntu Linux 20.04 LTS",
                  "product_id": "T000126",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:canonical:ubuntu_linux:-"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Ubuntu Linux 18.04 LTS",
                "product": {
                  "name": "Ubuntu Linux 18.04 LTS",
                  "product_id": "T015944",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:canonical:ubuntu_linux:ubuntu_18.04_lts"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Ubuntu Linux 14.04 ESM",
                "product": {
                  "name": "Ubuntu Linux 14.04 ESM",
                  "product_id": "T021846",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:canonical:ubuntu_linux:14.04_esm"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Ubuntu Linux 16.04 ESM",
                "product": {
                  "name": "Ubuntu Linux 16.04 ESM",
                  "product_id": "T021847",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:canonical:ubuntu_linux:16.04_esm"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Linux"
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-45142",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Heimdal. Der Fehler besteht aufgrund einer logischen Umkehrung, die dazu f\u00fchrt, dass die Validierung von Nachrichtenintegrit\u00e4tscodes in gssapi/arcfour invertiert wird. Ein Angreifer kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T021846",
          "T000126",
          "T015944",
          "T026205",
          "T012167",
          "T021847"
        ]
      },
      "release_date": "2023-02-08T23:00:00Z",
      "title": "CVE-2022-45142"
    }
  ]
}