WID-SEC-W-2023-2973

Vulnerability from csaf_certbund - Published: 2023-11-20 23:00 - Updated: 2023-11-20 23:00
Summary
Nextcloud: Mehrere Schwachstellen
Severity
Hoch
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: Nextcloud ist eine "on-premise" Plattform für Dateifreigabe und Zusammenarbeit.
Angriff: Ein entfernter, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um einen Denial of Service Angriff durchzuführen, um einen Denial of Service Zustand herbeizuführen, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuführen oder Sicherheitsvorkehrungen zu umgehen.
Betroffene Betriebssysteme: - UNIX - Linux - Windows
CVE-2023-48307
CVE-2023-48306
CVE-2023-48305
CVE-2023-48304
CVE-2023-48303
CVE-2023-48302
CVE-2023-48301
CVE-2023-48239
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "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": "Nextcloud ist eine \"on-premise\" Plattform f\u00fcr Dateifreigabe und Zusammenarbeit.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren, um einen Denial of Service Zustand herbeizuf\u00fchren, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuf\u00fchren oder Sicherheitsvorkehrungen zu umgehen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux\n- Windows",
        "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-2023-2973 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2973.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-2973 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-2973"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4PP4-M8PH-2999"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8F69-F9JG-4X3V"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8JWV-C8C8-9FR3"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2448-44RP-C7HH"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wgpw-qqq2-gwv6"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p7g9-x25m-4h87"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-f962-hw26-g267"
      },
      {
        "category": "external",
        "summary": "Nextcloud Security Advisories vom 2023-11-20",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-35p6-4992-w5fr"
      }
    ],
    "source_lang": "en-US",
    "title": "Nextcloud: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2023-11-20T23:00:00.000+00:00",
      "generator": {
        "date": "2026-07-16T16:55:57.074+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2023-2973",
      "initial_release_date": "2023-11-20T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-11-20T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Mail 3.3.0",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Mail 3.3.0",
                  "product_id": "T030537",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:mail_3.3.0"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Server 25.0.11",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Server 25.0.11",
                  "product_id": "T031299",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:server_25.0.11"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Server 26.0.6",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Server 26.0.6",
                  "product_id": "T031300",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:server_26.0.6"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Server 27.1.0",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Server 27.1.0",
                  "product_id": "T031302",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:server_27.1.0"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Server 25.0.13",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Server 25.0.13",
                  "product_id": "T031303",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:server_25.0.13"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Server 26.0.8",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Server 26.0.8",
                  "product_id": "T031304",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:server_26.0.8"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Server 27.1.3",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Server 27.1.3",
                  "product_id": "T031305",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:server_27.1.3"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Nextcloud Nextcloud \u003c Mail 2.2.8",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c Mail 2.2.8",
                  "product_id": "T031306",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:mail_2.2.8"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Nextcloud"
          }
        ],
        "category": "vendor",
        "name": "Nextcloud"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-48307",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48307"
    },
    {
      "cve": "CVE-2023-48306",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48306"
    },
    {
      "cve": "CVE-2023-48305",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48305"
    },
    {
      "cve": "CVE-2023-48304",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48304"
    },
    {
      "cve": "CVE-2023-48303",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48303"
    },
    {
      "cve": "CVE-2023-48302",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48302"
    },
    {
      "cve": "CVE-2023-48301",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48301"
    },
    {
      "cve": "CVE-2023-48239",
      "release_date": "2023-11-20T23:00:00.000+00:00",
      "title": "CVE-2023-48239"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.