{
  "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 für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen."
    }, {
      "category" : "description",
      "text" : "Kerberos ist ein verteilter Netzwerkdienst zur Authentifizierung. MIT Kerberos ist die freie Implementierung des \"Kerberos network authentication protocol\", des Massachusetts Institute of Technology (MIT).",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in MIT Kerberos ausnutzen, um einen Denial of Service Angriff durchzuführen.",
      "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 für Sicherheit in der Informationstechnik",
      "namespace" : "https://www.bsi.bund.de"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "WID-SEC-W-2022-1481 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2022-1481.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2022-1481 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-1481"
    }, {
      "category" : "external",
      "summary" : "Juniper Security Advisory JSA70182 vom 2023-01-12",
      "url" : "https://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Contrail-Service-Orchestration-Multiple-vulnerabilities-resolved-in-CSO-6-3-0?language=en_US"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2239 vom 2021-06-03",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2239"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9294 vom 2021-06-11",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9294.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:1593 vom 2021-05-18",
      "url" : "https://access.redhat.com/errata/RHSA-2021:1593"
    }, {
      "category" : "external",
      "summary" : "Github Krb5 vom 2020-11-05",
      "url" : "https://github.com/krb5/krb5/commit/57415dda6cf04e73ffc3723be518eddfae599bfd"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2437 vom 2020-11-07",
      "url" : "https://lists.debian.org/debian-lts-announce/2020/11/msg00011.html"
    }, {
      "category" : "external",
      "summary" : "Gentoo Linux Security Advisory GLSA-202011-17 vom 2020-11-16",
      "url" : "https://security.gentoo.org/glsa/202011-17"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2020:3375-1 vom 2020-11-19",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2020-November/007801.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2020:3379-1 vom 2020-11-19",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2020-November/007792.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2020:3377-1 vom 2020-11-19",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2020-November/007793.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DSA-4795 vom 2020-11-22",
      "url" : "https://www.debian.org/security/2020/dsa-4795"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2461 vom 2021-06-16",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2461"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2479 vom 2021-06-17",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2479"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2532 vom 2021-06-23",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2532"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2543 vom 2021-06-24",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2543"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:3016 vom 2021-08-06",
      "url" : "https://access.redhat.com/errata/RHSA-2021:3016"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:3119 vom 2021-08-10",
      "url" : "https://access.redhat.com/errata/RHSA-2021:3119"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:3556 vom 2021-09-17",
      "url" : "https://access.redhat.com/errata/RHSA-2021:3556"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2022-1845 vom 2022-09-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALAS-2022-1845.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Solaris Third Party Bulletin-October 2022 vom 2022-10-18",
      "url" : "https://www.oracle.com/security-alerts/bulletinoct2022.html"
    } ],
    "source_lang" : "en-US",
    "title" : "MIT Kerberos: Schwachstelle ermöglicht Denial of Service",
    "tracking" : {
      "current_release_date" : "2023-01-11T23:00:00.000+00:00",
      "generator" : {
        "date" : "2024-08-15T17:35:27.507+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.5"
        }
      },
      "id" : "WID-SEC-W-2022-1481",
      "initial_release_date" : "2020-11-05T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2020-11-05T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2020-11-08T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2020-11-15T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von Gentoo aufgenommen"
      }, {
        "date" : "2020-11-19T23:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2020-11-22T23:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2021-05-18T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-06-03T22:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-06-10T22:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2021-06-16T22:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-06-17T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-06-23T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-06-24T22:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-08-05T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-08-10T22:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-09-16T22:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2022-09-20T22:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2022-10-18T22:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates aufgenommen"
      }, {
        "date" : "2023-01-11T23:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von Juniper aufgenommen"
      } ],
      "status" : "final",
      "version" : "18"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Amazon Linux 2",
        "product" : {
          "name" : "Amazon Linux 2",
          "product_id" : "398363",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:amazon:linux_2:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Amazon"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Debian Linux",
        "product" : {
          "name" : "Debian Linux",
          "product_id" : "2951",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:debian:debian_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Debian"
    }, {
      "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" : "Juniper Contrail Service Orchestration",
        "product" : {
          "name" : "Juniper Contrail Service Orchestration",
          "product_id" : "T025794",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:juniper:contrail_service_orchestration:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Juniper"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_name",
          "name" : "MIT Kerberos < 1.17.2",
          "product" : {
            "name" : "MIT Kerberos < 1.17.2",
            "product_id" : "T017628",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mit:kerberos:1.17.2"
            }
          }
        }, {
          "category" : "product_name",
          "name" : "MIT Kerberos < 1.18.3",
          "product" : {
            "name" : "MIT Kerberos < 1.18.3",
            "product_id" : "T017629",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:mit:kerberos:1.18.3"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Kerberos"
      } ],
      "category" : "vendor",
      "name" : "MIT"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Oracle Linux",
        "product" : {
          "name" : "Oracle Linux",
          "product_id" : "T004914",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:oracle:linux:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Oracle Solaris",
        "product" : {
          "name" : "Oracle Solaris",
          "product_id" : "T002965",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:oracle:solaris:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Oracle"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Red Hat Enterprise Linux",
        "product" : {
          "name" : "Red Hat Enterprise Linux",
          "product_id" : "67646",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:redhat:enterprise_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Red Hat"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "SUSE Linux",
        "product" : {
          "name" : "SUSE Linux",
          "product_id" : "T002207",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:suse:suse_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "SUSE"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2020-28196",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existiert eine Schwachstelle in MIT Kerberos. Der libkrb5 ASN.1-Decoder unterstützt unbegrenzte BER-Längen. Die Tag-Länge wird mithilfe einer Rekursion berechnet. Das Fehlen eines Rekursionslimits ermöglicht es einem entfernten anonymen Angreifer einen Stapelüberlauf zu verursachen und den Prozess zum Absturz zu bringen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "67646", "T002965", "398363", "T012167", "T004914", "T025794" ]
    },
    "release_date" : "2020-11-05T23:00:00.000+00:00",
    "title" : "CVE-2020-28196"
  } ]
}