{
  "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": "Internet Systems Consortium (ISC) DHCP ist eine weit verbreitete Client- und Server-Implementierung des Dynamic Host Configuration Protokolls (DHCP) unter Unix. Sie erm\u00f6glicht 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 durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux",
        "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-2023-1261 - 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 erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2023-05-21T22:00:00.000+00:00",
      "generator": {
        "date": "2024-02-15T17:28:22.731+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "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 \u003c 4.1-ESV-R16-P1",
                "product": {
                  "name": "Internet Systems Consortium DHCP \u003c 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 \u003c 4.4.2-P1",
                "product": {
                  "name": "Internet Systems Consortium DHCP \u003c 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 Puffer\u00fcberlaufs im Code zum Parsen von Lease-Dateien. Ein anonymer Angreifer aus dem benachbarten Netzwerk kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand auszul\u00f6sen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T015518",
          "67646",
          "T015516",
          "T013312",
          "T015127",
          "T015126",
          "T012167",
          "T004914",
          "T016243",
          "2951",
          "T002207",
          "T000126",
          "T001663",
          "T019617",
          "398363",
          "1727"
        ]
      },
      "release_date": "2021-05-26T22:00:00Z",
      "title": "CVE-2021-25217"
    }
  ]
}