{
  "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.\r\nCitrix XenServer ist eine Lösung für das Management, die Konfiguration und den Betrieb virtueller Maschinen auf Servern.\r\nCitrix Hypervisor ist eine Plattform für Desktop-, Server- und Cloud-Virtualisierungsinfrastrukturen.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um seine Privilegien zu erhöhen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- 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-2025-1156 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-1156.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2025-1156 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-1156"
    }, {
      "category" : "external",
      "summary" : "Xen Security Advisory 468 v3 vom 2025-05-27",
      "url" : "https://xenbits.xen.org/xsa/advisory-468.html"
    }, {
      "category" : "external",
      "summary" : "Citrix Security Bulletin vom 2025-05-27",
      "url" : "https://support.citrix.com/s/article/CTX692748-xenserver-and-citrix-hypervisor-security-update-for-cve202527462-cve202527463-cve202527464"
    } ],
    "source_lang" : "en-US",
    "title" : "Xen: Mehrere Schwachstellen ermöglichen Privilegieneskalation",
    "tracking" : {
      "current_release_date" : "2025-05-27T22:00:00.000+00:00",
      "generator" : {
        "date" : "2025-05-28T11:12:10.242+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.12"
        }
      },
      "id" : "WID-SEC-W-2025-1156",
      "initial_release_date" : "2025-05-27T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2025-05-27T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      } ],
      "status" : "final",
      "version" : "1"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "8.2 CU1 LTSR",
          "product" : {
            "name" : "Citrix Systems Hypervisor 8.2 CU1 LTSR",
            "product_id" : "T037811",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:citrix:hypervisor:8.2_cu1_ltsr"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Hypervisor"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "8.4",
          "product" : {
            "name" : "Citrix Systems XenServer 8.4",
            "product_id" : "T043563",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:citrix:xenserver:8.4"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "XenServer"
      } ],
      "category" : "vendor",
      "name" : "Citrix Systems"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version_range",
          "name" : "<9.4.1",
          "product" : {
            "name" : "Open Source Xen <9.4.1",
            "product_id" : "T044188"
          }
        }, {
          "category" : "product_version",
          "name" : "9.4.1",
          "product" : {
            "name" : "Open Source Xen 9.4.1",
            "product_id" : "T044188-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:xen:xen:9.4.1"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Xen"
      } ],
      "category" : "vendor",
      "name" : "Open Source"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2025-27462",
    "product_status" : {
      "known_affected" : [ "T037811", "T044188", "T043563" ]
    },
    "release_date" : "2025-05-27T22:00:00.000+00:00",
    "title" : "CVE-2025-27462"
  }, {
    "cve" : "CVE-2025-27463",
    "product_status" : {
      "known_affected" : [ "T037811", "T044188", "T043563" ]
    },
    "release_date" : "2025-05-27T22:00:00.000+00:00",
    "title" : "CVE-2025-27463"
  }, {
    "cve" : "CVE-2025-27464",
    "product_status" : {
      "known_affected" : [ "T037811", "T044188", "T043563" ]
    },
    "release_date" : "2025-05-27T22:00:00.000+00:00",
    "title" : "CVE-2025-27464"
  } ]
}