{
  "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" : "Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) für die darauf laufenden Systeme (Domains) paravirtualisiert.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein lokaler Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um einen Denial of Service Angriff durchzuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- UNIX\n- Linux\n- Native Hypervisor",
      "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-2023-0875 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-0875.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2023-0875 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-0875"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-6001-1 vom 2023-04-06",
      "url" : "https://ubuntu.com/security/notices/USN-6001-1"
    }, {
      "category" : "external",
      "summary" : "Xen Security Advisory vom 2021-12-20",
      "url" : "https://xenbits.xen.org/xsa/advisory-376.html"
    }, {
      "category" : "external",
      "summary" : "Xen Security Advisory vom 2021-12-20",
      "url" : "https://xenbits.xen.org/xsa/advisory-391.html"
    }, {
      "category" : "external",
      "summary" : "Xen Security Advisory vom 2021-12-20",
      "url" : "https://xenbits.xen.org/xsa/advisory-392.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0056-1 vom 2022-01-11",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/009994.html"
    }, {
      "category" : "external",
      "summary" : "Citrix Security Advisory CTX335432 vom 2022-01-12",
      "url" : "https://support.citrix.com/article/CTX335432"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0080-1 vom 2022-01-14",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010005.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0090-1 vom 2022-01-17",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010008.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0068-1 vom 2022-01-14",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010003.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0079-1 vom 2022-01-14",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010004.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0131-1 vom 2022-01-19",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010029.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DSA-5050 vom 2022-01-21",
      "url" : "https://www.debian.org/security/2022/dsa-5050"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0181-1 vom 2022-01-26",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010073.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0197-1 vom 2022-01-26",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010080.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.4-2022-021 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-021.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.10-2022-009 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-009.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2022-1749 vom 2022-02-08",
      "url" : "https://alas.aws.amazon.com/AL2/ALAS-2022-1749.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2022-1563 vom 2022-02-08",
      "url" : "https://alas.aws.amazon.com/ALAS-2022-1563.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5278-1 vom 2022-02-09",
      "url" : "https://ubuntu.com/security/notices/USN-5278-1"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0367-1 vom 2022-02-10",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-February/010213.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0362-1 vom 2022-02-10",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-February/010210.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0366-1 vom 2022-02-10",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-February/010214.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0371-1 vom 2022-02-11",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-February/010217.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0477-1 vom 2022-02-17",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-February/010246.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5298-1 vom 2022-02-22",
      "url" : "https://ubuntu.com/security/notices/USN-5298-1"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DSA-5096 vom 2022-03-09",
      "url" : "https://lists.debian.org/debian-security-announce/2022/msg00063.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2940 vom 2022-03-09",
      "url" : "https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2941 vom 2022-03-09",
      "url" : "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5338-1 vom 2022-03-22",
      "url" : "https://ubuntu.com/security/notices/USN-5338-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5337-1 vom 2022-03-22",
      "url" : "https://ubuntu.com/security/notices/USN-5337-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5368-1 vom 2022-04-06",
      "url" : "https://ubuntu.com/security/notices/USN-5368-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5377-1 vom 2022-04-13",
      "url" : "https://ubuntu.com/security/notices/USN-5377-1"
    } ],
    "source_lang" : "en-US",
    "title" : "Xen: Mehrere Schwachstellen ermöglichen Denial of Service",
    "tracking" : {
      "current_release_date" : "2023-04-05T22:00:00.000+00:00",
      "generator" : {
        "date" : "2024-08-15T17:48:14.255+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.5"
        }
      },
      "id" : "WID-SEC-W-2023-0875",
      "initial_release_date" : "2021-12-20T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2021-12-20T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2022-01-04T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Referenz(en) aufgenommen: FEDORA-2021-4F1A2CDF2E, FEDORA-2021-E6CBCA1E9E"
      }, {
        "date" : "2022-01-11T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-12T23:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von Citrix aufgenommen"
      }, {
        "date" : "2022-01-17T23:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-19T23:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-23T23:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2022-01-25T23:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-30T23:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2022-02-07T23:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2022-02-08T23:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-02-10T23:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-02-13T23:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-02-17T23:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-02-21T23:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-03-09T23:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2022-03-21T23:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-04-06T22:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-04-12T22:00:00.000+00:00",
        "number" : "19",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2023-04-05T22:00:00.000+00:00",
        "number" : "20",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      } ],
      "status" : "final",
      "version" : "20"
    }
  },
  "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" : "Citrix Systems Hypervisor",
        "product" : {
          "name" : "Citrix Systems Hypervisor",
          "product_id" : "T016872",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:citrix:hypervisor:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Citrix Systems"
    }, {
      "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" : "Open Source Xen",
        "product" : {
          "name" : "Open Source Xen",
          "product_id" : "T000611",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:xen:xen:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Open Source"
    }, {
      "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-2021-28714",
    "notes" : [ {
      "category" : "description",
      "text" : "In Xen existieren mehrere Schwachstellen. Eine unsachgemäße Verarbeitung von eingehenden Datenpaketen für einen Gast im Netback-Treiber des Linux-Kernels, kann zu einem Speicherplatzmangel in der Domäne führen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service zu verursachen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "T000611", "T000126", "398363", "T016872" ]
    },
    "release_date" : "2021-12-20T23:00:00.000+00:00",
    "title" : "CVE-2021-28714"
  }, {
    "cve" : "CVE-2021-28715",
    "notes" : [ {
      "category" : "description",
      "text" : "In Xen existieren mehrere Schwachstellen. Eine unsachgemäße Verarbeitung von eingehenden Datenpaketen für einen Gast im Netback-Treiber des Linux-Kernels, kann zu einem Speicherplatzmangel in der Domäne führen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service zu verursachen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "T000611", "T000126", "398363", "T016872" ]
    },
    "release_date" : "2021-12-20T23:00:00.000+00:00",
    "title" : "CVE-2021-28715"
  }, {
    "cve" : "CVE-2021-28711",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existieren mehrere Schwachstellen in Xen. Diese bestehen aufgrund einer ungenügenden Härtung von PV-Frontends in den Gastsystemen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service bei Gastsystemen zu verursachen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "T000611", "T000126", "398363", "T016872" ]
    },
    "release_date" : "2021-12-20T23:00:00.000+00:00",
    "title" : "CVE-2021-28711"
  }, {
    "cve" : "CVE-2021-28712",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existieren mehrere Schwachstellen in Xen. Diese bestehen aufgrund einer ungenügenden Härtung von PV-Frontends in den Gastsystemen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service bei Gastsystemen zu verursachen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "T000611", "T000126", "398363", "T016872" ]
    },
    "release_date" : "2021-12-20T23:00:00.000+00:00",
    "title" : "CVE-2021-28712"
  }, {
    "cve" : "CVE-2021-28713",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existieren mehrere Schwachstellen in Xen. Diese bestehen aufgrund einer ungenügenden Härtung von PV-Frontends in den Gastsystemen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service bei Gastsystemen zu verursachen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "T000611", "T000126", "398363", "T016872" ]
    },
    "release_date" : "2021-12-20T23:00:00.000+00:00",
    "title" : "CVE-2021-28713"
  } ]
}