{
  "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" : "Internet Systems Consortium (ISC) DHCP ist eine weit verbreitete Client- und Server-Implementierung des Dynamic Host Configuration Protokolls (DHCP) unter Unix. Sie ermöglicht die automatische Verteilung von IP-Informationen, wie z. B. IP-Adresse, Netzwerkmaske, Defaultgateway vom Server zu Clients.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein Angreifer aus dem benachbarten Netzwerk kann eine Schwachstelle in Internet Systems Consortium DHCP ausnutzen, um einen Denial of Service Angriff durchzuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- UNIX\n- Linux",
      "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-2023-1261 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-1261.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2023-1261 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1261"
    }, {
      "category" : "external",
      "summary" : "Gentoo Linux Security Advisory GLSA-202305-22 vom 2023-05-21",
      "url" : "https://security.gentoo.org/glsa/202305-22"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:1841-1 vom 2021-06-02",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-June/008914.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2674 vom 2021-06-03",
      "url" : "https://lists.debian.org/debian-lts-announce/2021/06/msg00002.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-4969-3 vom 2021-06-07",
      "url" : "https://ubuntu.com/security/notices/USN-4969-3"
    }, {
      "category" : "external",
      "summary" : "ISC Security Advisory vom 2021-05-26",
      "url" : "https://kb.isc.org/docs/cve-2021-25217"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-2359 vom 2021-06-10",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-2359.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-2357 vom 2021-06-11",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-2357.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-4969-1 vom 2021-05-27",
      "url" : "https://ubuntu.com/security/notices/USN-4969-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-4969-2 vom 2021-05-27",
      "url" : "https://ubuntu.com/security/notices/USN-4969-2"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:1822-1 vom 2021-06-01",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-June/008906.html"
    }, {
      "category" : "external",
      "summary" : "Arch Linux Security Advisory ASA-202106-11 vom 2021-06-01",
      "url" : "https://security.archlinux.org/ASA-202106-11"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:14740-1 vom 2021-06-01",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-June/008905.html"
    }, {
      "category" : "external",
      "summary" : "Arch Linux Security Advisory ASA-202106-10 vom 2021-06-01",
      "url" : "https://security.archlinux.org/ASA-202106-10"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2357 vom 2021-06-09",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2357"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2359 vom 2021-06-09",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2359"
    }, {
      "category" : "external",
      "summary" : "CentOS Security Advisory CESA-2021:2357 vom 2021-06-14",
      "url" : "http://centos-announce.2309468.n4.nabble.com/CentOS-announce-CESA-2021-2357-Important-CentOS-7-dhcp-Security-Update-tp4646203.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2418 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2418"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2420 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2420"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2419 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2419"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2414 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2414"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2416 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2416"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2405 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2405"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2415 vom 2021-06-14",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2415"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9314 vom 2021-06-17",
      "url" : "https://linux.oracle.com/errata/ELSA-2021-9314.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2469 vom 2021-06-17",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2469"
    }, {
      "category" : "external",
      "summary" : "ORACLE OVMSA-2021-0018 vom 2021-06-17",
      "url" : "https://oss.oracle.com/pipermail/oraclevm-errata/2021-June/001018.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2519 vom 2021-06-22",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2519"
    }, {
      "category" : "external",
      "summary" : "ORACLE OVMSA-2021-0019 vom 2021-06-22",
      "url" : "https://oss.oracle.com/pipermail/oraclevm-errata/2021-June/001019.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2021-1654 vom 2021-06-23",
      "url" : "https://alas.aws.amazon.com/AL2/ALAS-2021-1654.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2555 vom 2021-07-06",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2555"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2021-1510 vom 2021-07-13",
      "url" : "https://alas.aws.amazon.com/ALAS-2021-1510.html"
    }, {
      "category" : "external",
      "summary" : "AVAYA Security Advisory ASA-2021-085 vom 2021-07-15",
      "url" : "https://downloads.avaya.com/css/P8/documents/101076672"
    }, {
      "category" : "external",
      "summary" : "AVAYA Security Advisory ASA-2021-086 vom 2021-07-15",
      "url" : "https://downloads.avaya.com/css/P8/documents/101076674"
    }, {
      "category" : "external",
      "summary" : "AVAYA Security Advisory ASA-2021-085 vom 2021-07-15",
      "url" : "https://downloads.avaya.com/css/P8/documents/101076673"
    }, {
      "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" : "F5 Security Advisory K08832573 vom 2022-05-20",
      "url" : "https://support.f5.com/csp/article/K08832573"
    } ],
    "source_lang" : "en-US",
    "title" : "Internet Systems Consortium DHCP: Schwachstelle ermöglicht Denial of Service",
    "tracking" : {
      "current_release_date" : "2023-05-21T22:00:00.000+00:00",
      "generator" : {
        "date" : "2024-08-15T17:51:12.608+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.5"
        }
      },
      "id" : "WID-SEC-W-2023-1261",
      "initial_release_date" : "2021-05-26T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2021-05-26T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2021-05-27T22:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Fedora und Ubuntu aufgenommen"
      }, {
        "date" : "2021-06-01T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von SUSE und Arch Linux aufgenommen"
      }, {
        "date" : "2021-06-03T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von SUSE und Debian aufgenommen"
      }, {
        "date" : "2021-06-07T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2021-06-08T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-06-10T22:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2021-06-14T22:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von CentOS und Red Hat aufgenommen"
      }, {
        "date" : "2021-06-16T22:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2021-06-17T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Red Hat und ORACLE aufgenommen"
      }, {
        "date" : "2021-06-22T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Red Hat und ORACLE aufgenommen"
      }, {
        "date" : "2021-06-23T22:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2021-07-06T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-07-12T22:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2021-07-18T22:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von AVAYA aufgenommen"
      }, {
        "date" : "2021-08-05T22:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-08-10T22:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2022-05-22T22:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von F5 aufgenommen"
      }, {
        "date" : "2023-05-21T22:00:00.000+00:00",
        "number" : "19",
        "summary" : "Neue Updates von Gentoo aufgenommen"
      } ],
      "status" : "final",
      "version" : "19"
    }
  },
  "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" : "Avaya Aura Application Enablement Services",
        "product" : {
          "name" : "Avaya Aura Application Enablement Services",
          "product_id" : "T015516",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:avaya:aura_application_enablement_services:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Avaya Aura Communication Manager",
        "product" : {
          "name" : "Avaya Aura Communication Manager",
          "product_id" : "T015126",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:avaya:communication_manager:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Avaya Aura Session Manager",
        "product" : {
          "name" : "Avaya Aura Session Manager",
          "product_id" : "T015127",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:avaya:session_manager:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Avaya Aura System Manager",
        "product" : {
          "name" : "Avaya Aura System Manager",
          "product_id" : "T015518",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:avaya:aura_system_manager:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Avaya Web License Manager",
        "product" : {
          "name" : "Avaya Web License Manager",
          "product_id" : "T016243",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:avaya:web_license_manager:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Avaya"
    }, {
      "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" : "F5 BIG-IP",
        "product" : {
          "name" : "F5 BIG-IP",
          "product_id" : "T001663",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:f5:big-ip:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "F5"
    }, {
      "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" : [ {
        "branches" : [ {
          "category" : "product_name",
          "name" : "Internet Systems Consortium DHCP < 4.1-ESV-R16-P1",
          "product" : {
            "name" : "Internet Systems Consortium DHCP < 4.1-ESV-R16-P1",
            "product_id" : "T019427",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:isc:dhcp:4.1-esv-r16-p1"
            }
          }
        }, {
          "category" : "product_name",
          "name" : "Internet Systems Consortium DHCP < 4.4.2-P1",
          "product" : {
            "name" : "Internet Systems Consortium DHCP < 4.4.2-P1",
            "product_id" : "T019428",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:isc:dhcp:4.4.2-p1"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "DHCP"
      } ],
      "category" : "vendor",
      "name" : "Internet Systems Consortium"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Open Source Arch Linux",
        "product" : {
          "name" : "Open Source Arch Linux",
          "product_id" : "T013312",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:archlinux:archlinux:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Open Source CentOS",
        "product" : {
          "name" : "Open Source CentOS",
          "product_id" : "1727",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:centos:centos:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Open Source"
    }, {
      "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 VM 3",
        "product" : {
          "name" : "Oracle VM 3",
          "product_id" : "T019617",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:oracle:vm:3"
          }
        }
      } ],
      "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"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Ubuntu Linux",
        "product" : {
          "name" : "Ubuntu Linux",
          "product_id" : "T000126",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:canonical:ubuntu_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Ubuntu"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2021-25217",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existiert eine Schwachstelle in Internet Systems Consortium DHCP. Der Fehler besteht im \"ISC DHCP-Paket\" aufgrund eines Pufferüberlaufs im Code zum Parsen von Lease-Dateien. Ein anonymer Angreifer aus dem benachbarten Netzwerk kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand auszulösen."
    } ],
    "product_status" : {
      "known_affected" : [ "T015518", "67646", "T015516", "T013312", "T015127", "T015126", "T012167", "T004914", "T016243", "2951", "T002207", "T000126", "T001663", "T019617", "398363", "1727" ]
    },
    "release_date" : "2021-05-26T22:00:00.000+00:00",
    "title" : "CVE-2021-25217"
  } ]
}