csaf_certbund - wid-sec-w-2023-1941

WID-SEC-W-2023-1941

Vulnerability from csaf_certbund - Published: 2023-08-01 22:00 - Updated: 2024-09-22 22:00

Summary

Xen: Schwachstelle ermöglicht Denial of Service

Notes

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.

Produktbeschreibung

Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) für die darauf laufenden Systeme (Domains) paravirtualisiert.

Angriff

Ein lokaler Angreifer kann eine Schwachstelle in Xen ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme

- Linux

JSON

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{
  "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.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle in Xen ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- 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-2023-1941 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1941.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-1941 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1941"
      },
      {
        "category": "external",
        "summary": "Xen Security Advisory - XSA-436 vom 2023-08-01",
        "url": "https://xenbits.xen.org/xsa/advisory-436.html"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2023-04473FC41E vom 2023-08-12",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2023-04473fc41e"
      },
      {
        "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: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-09-22T22:00:00.000+00:00",
      "generator": {
        "date": "2024-09-23T08:05:21.074+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.8"
        }
      },
      "id": "WID-SEC-W-2023-1941",
      "initial_release_date": "2023-08-01T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-08-01T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2023-08-13T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2023-08-15T22:00:00.000+00:00",
          "number": "3",
          "summary": "Korrektur Produktauswahl + Meldungstexte; es ist Xen auf ARM und nicht AMD betroffen"
        },
        {
          "date": "2024-09-22T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Gentoo aufgenommen"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "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": "\u003c4.16.4-4.fc37",
                "product": {
                  "name": "Open Source Xen \u003c4.16.4-4.fc37",
                  "product_id": "T029011"
                }
              },
              {
                "category": "product_version",
                "name": "4.16.4-4.fc37",
                "product": {
                  "name": "Open Source Xen 4.16.4-4.fc37",
                  "product_id": "T029011-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:xen:xen:4.16.4-4.fc37"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c4.17.1-9.fc38",
                "product": {
                  "name": "Open Source Xen \u003c4.17.1-9.fc38",
                  "product_id": "T029012"
                }
              },
              {
                "category": "product_version",
                "name": "4.17.1-9.fc38",
                "product": {
                  "name": "Open Source Xen 4.17.1-9.fc38",
                  "product_id": "T029012-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:xen:xen:4.17.1-9.fc38"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Xen"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-34320",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle in Xen auf Arm Cortex-A77 Architekturen. Dieser Fehler besteht aufgrund der Ausf\u00fchrung eines Ladevorgangs in ein Ger\u00e4t oder einen nicht cachef\u00e4higen Speicher und eines exklusiven Speicher- oder Registerlesevorgangs des Physical Address Register (PAR_EL1) in unmittelbarer N\u00e4he, wodurch ein Benutzer den Kern blockieren kann. Ein Angreifer kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T029012",
          "T029011",
          "T012167",
          "74185"
        ]
      },
      "release_date": "2023-08-01T22:00:00.000+00:00",
      "title": "CVE-2023-34320"
    }
  ]
}

CVE-2023-34320 (GCVE-0-2023-34320)

Vulnerability from cvelistv5 – Published: 2023-12-08 20:54 – Updated: 2025-11-04 19:16

Summary

Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412 where software, under certain circumstances, could deadlock a core due to the execution of either a load to device or non-cacheable memory, and either a store exclusive or register read of the Physical Address Register (PAR_EL1) in close proximity.

Severity ?

No CVSS data available.

Assigner

XEN

References

URL

Tags

https://xenbits.xenproject.org/xsa/advisory-436.html

Impacted products

	Vendor	Product	Version
	Xen	Xen	Unknown: consult Xen advisory XSA-436

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T19:16:33.356Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-436.html"
          },
          {
            "url": "http://xenbits.xen.org/xsa/advisory-436.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Xen",
          "vendor": "Xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-436"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Systems running all version of Xen are affected.\n\nThis bug is specific to Arm Cortex-A77 cores r0p0 and r1p0.\n"
        }
      ],
      "datePublic": "2023-08-01T14:44:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412\nwhere software, under certain circumstances, could deadlock a core\ndue to the execution of either a load to device or non-cacheable memory,\nand either a store exclusive or register read of the Physical\nAddress Register (PAR_EL1) in close proximity.\n"
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "A (malicious) guest that doesn\u0027t include the workaround for erratum\n1508412 could deadlock the core.  This will ultimately result to\na deadlock of the system.\n"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-08T20:54:06.993Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-436.html"
        }
      ],
      "title": "arm: Guests can trigger a deadlock on Cortex-A77",
      "workarounds": [
        {
          "lang": "en",
          "value": "There are no known mitigations.\n"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2023-34320",
    "datePublished": "2023-12-08T20:54:06.993Z",
    "dateReserved": "2023-06-01T10:44:17.064Z",
    "dateUpdated": "2025-11-04T19:16:33.356Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

WID-SEC-W-2023-1941

CVE-2023-34320 (GCVE-0-2023-34320)

Tags

Sightings

Nomenclature