{
  "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 Informationen offenzulegen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Linux\n- UNIX\n- Windows",
      "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-2023-2900 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2900.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2023-2900 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-2900"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4945-1 vom 2023-12-21",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-December/017515.html"
    }, {
      "category" : "external",
      "summary" : "Xen Security Advisory XSA-445 vom 2023-11-14",
      "url" : "https://xenbits.xen.org/xsa/advisory-445.html"
    }, {
      "category" : "external",
      "summary" : "Xen Security Advisory XSA-446 vom 2023-11-14",
      "url" : "https://xenbits.xen.org/xsa/advisory-446.html"
    }, {
      "category" : "external",
      "summary" : "Fedora Security Advisory FEDORA-2023-E62DA41072 vom 2023-11-15",
      "url" : "https://bodhi.fedoraproject.org/updates/FEDORA-2023-e62da41072"
    }, {
      "category" : "external",
      "summary" : "Citrix Security Advisory CTX583037 vom 2023-11-15",
      "url" : "https://support.citrix.com/article/CTX583037"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4466-1 vom 2023-11-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-November/017053.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4476-1 vom 2023-11-17",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-November/017058.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4475-1 vom 2023-11-17",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-November/017059.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4484-1 vom 2023-11-20",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-November/017126.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4485-1 vom 2023-11-20",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-November/017125.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2023:4486-1 vom 2023-11-20",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2023-November/017124.html"
    }, {
      "category" : "external",
      "summary" : "Gentoo Linux Security Advisory GLSA-202409-10 vom 2024-09-22",
      "url" : "https://security.gentoo.org/glsa/202409-10"
    } ],
    "source_lang" : "en-US",
    "title" : "Xen: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen",
    "tracking" : {
      "current_release_date" : "2024-09-22T22:00:00.000+00:00",
      "generator" : {
        "date" : "2024-09-23T08:05:16.752+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.8"
        }
      },
      "id" : "WID-SEC-W-2023-2900",
      "initial_release_date" : "2023-11-14T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2023-11-14T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2023-11-15T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Fedora und Citrix aufgenommen"
      }, {
        "date" : "2023-11-16T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2023-11-20T23:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2023-12-21T23:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2024-09-22T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Gentoo aufgenommen"
      } ],
      "status" : "final",
      "version" : "6"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "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" : "product_name",
        "name" : "Citrix Systems XenServer",
        "product" : {
          "name" : "Citrix Systems XenServer",
          "product_id" : "T004077",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:citrix:xenserver:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Citrix Systems"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Fedora Linux",
        "product" : {
          "name" : "Fedora Linux",
          "product_id" : "74185",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:fedoraproject:fedora:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Fedora"
    }, {
      "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_version_range",
          "name" : "<4.17.x",
          "product" : {
            "name" : "Open Source Xen <4.17.x",
            "product_id" : "T031107"
          }
        }, {
          "category" : "product_version",
          "name" : "4.17.x",
          "product" : {
            "name" : "Open Source Xen 4.17.x",
            "product_id" : "T031107-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:xen:xen:4.17.x"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "<4.16.x",
          "product" : {
            "name" : "Open Source Xen <4.16.x",
            "product_id" : "T031108"
          }
        }, {
          "category" : "product_version",
          "name" : "4.16.x",
          "product" : {
            "name" : "Open Source Xen 4.16.x",
            "product_id" : "T031108-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:xen:xen:4.16.x"
            }
          }
        }, {
          "category" : "product_version_range",
          "name" : "<4.15.x",
          "product" : {
            "name" : "Open Source Xen <4.15.x",
            "product_id" : "T031109"
          }
        }, {
          "category" : "product_version",
          "name" : "4.15.x",
          "product" : {
            "name" : "Open Source Xen 4.15.x",
            "product_id" : "T031109-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:xen:xen:4.15.x"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "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"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2023-46835",
    "notes" : [ {
      "category" : "description",
      "text" : "Es besteht eine Schwachstelle in Xen. Dieser Fehler besteht in den IOMMU-Quarantäne-Seitentabellenebenen aufgrund einer Unstimmigkeit zwischen den Ebenen, die dazu führt, dass der Lese-/Schreibzugriff zwischen Gerätezuweisungen nicht mehr gelöscht wird. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um vertrauliche Informationen offenzulegen."
    } ],
    "product_status" : {
      "known_affected" : [ "T004077", "T002207", "T031108", "T031107", "T031109", "T012167", "T016872", "74185" ]
    },
    "release_date" : "2023-11-14T23:00:00.000+00:00",
    "title" : "CVE-2023-46835"
  }, {
    "cve" : "CVE-2023-46836",
    "notes" : [ {
      "category" : "description",
      "text" : "Es besteht eine Schwachstelle in Xen. Dieser Fehler besteht aufgrund eines unvollständigen Sicherheitsupdates für BTC/SRSO, das es ermöglicht, den Inhalt des Speichers anderer Maschinen zu ermitteln. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um vertrauliche Informationen offenzulegen."
    } ],
    "product_status" : {
      "known_affected" : [ "T004077", "T002207", "T031109", "T012167", "T016872", "74185" ]
    },
    "release_date" : "2023-11-14T23:00:00.000+00:00",
    "title" : "CVE-2023-46836"
  } ]
}