{
  "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": "Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) f\u00fcr die darauf laufenden Systeme (Domains) paravirtualisiert.\r\nCitrix XenServer ist eine L\u00f6sung f\u00fcr das Management, die Konfiguration und den Betrieb virtueller Maschinen auf Servern.\r\nCitrix Hypervisor ist eine Plattform f\u00fcr Desktop-, Server- und Cloud-Virtualisierungsinfrastrukturen.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um seine Privilegien zu erh\u00f6hen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges",
        "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-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 erm\u00f6glichen 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": "\u003c9.4.1",
                "product": {
                  "name": "Open Source Xen \u003c9.4.1",
                  "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"
    }
  ]
}