WID-SEC-W-2023-0847

Vulnerability from csaf_certbund - Published: 2023-04-04 22:00 - Updated: 2025-09-17 22:00
Summary
Nextcloud: Mehrere Schwachstellen ermöglichen Manipulation von Dateien

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 lokaler Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um Dateien zu manipulieren.
Betroffene Betriebssysteme
- Android - iPhoneOS - Linux - UNIX - Windows
To clipboard 

{
  "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": "Nextcloud ist eine \"on-premise\" Plattform f\u00fcr Dateifreigabe und Zusammenarbeit.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um Dateien zu manipulieren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Android\n- iPhoneOS\n- Linux\n- UNIX\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-2023-0847 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-0847.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-0847 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-0847"
      },
      {
        "category": "external",
        "summary": "Github Nextcloud Advisory vom 2023-04-04",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc"
      },
      {
        "category": "external",
        "summary": "Github Nextcloud Advisory vom 2023-04-04",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8"
      },
      {
        "category": "external",
        "summary": "Github Nextcloud Advisory vom 2023-04-04",
        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-4303 vom 2025-09-18",
        "url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Nextcloud: Mehrere Schwachstellen erm\u00f6glichen Manipulation von Dateien",
    "tracking": {
      "current_release_date": "2025-09-17T22:00:00.000+00:00",
      "generator": {
        "date": "2025-09-18T07:16:15.869+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.4.0"
        }
      },
      "id": "WID-SEC-W-2023-0847",
      "initial_release_date": "2023-04-04T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-04-04T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2025-09-17T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Debian aufgenommen"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c3.6.5 Desktop",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c3.6.5 Desktop",
                  "product_id": "T027074"
                }
              },
              {
                "category": "product_version",
                "name": "3.6.5 Desktop",
                "product": {
                  "name": "Nextcloud Nextcloud 3.6.5 Desktop",
                  "product_id": "T027074-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:3.6.5_desktop"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c3.8.0 Desktop",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c3.8.0 Desktop",
                  "product_id": "T027076"
                }
              },
              {
                "category": "product_version",
                "name": "3.8.0 Desktop",
                "product": {
                  "name": "Nextcloud Nextcloud 3.8.0 Desktop",
                  "product_id": "T027076-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:3.8.0_desktop"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c3.25.0 Android",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c3.25.0 Android",
                  "product_id": "T027077"
                }
              },
              {
                "category": "product_version",
                "name": "3.25.0 Android",
                "product": {
                  "name": "Nextcloud Nextcloud 3.25.0 Android",
                  "product_id": "T027077-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:3.25.0_android"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c4.8.0 iOS",
                "product": {
                  "name": "Nextcloud Nextcloud \u003c4.8.0 iOS",
                  "product_id": "T027079"
                }
              },
              {
                "category": "product_version",
                "name": "4.8.0 iOS",
                "product": {
                  "name": "Nextcloud Nextcloud 4.8.0 iOS",
                  "product_id": "T027079-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nextcloud:nextcloud:4.8.0_ios"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Nextcloud"
          }
        ],
        "category": "vendor",
        "name": "Nextcloud"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-28997",
      "product_status": {
        "known_affected": [
          "T027074",
          "2951"
        ]
      },
      "release_date": "2023-04-04T22:00:00.000+00:00",
      "title": "CVE-2023-28997"
    },
    {
      "cve": "CVE-2023-28998",
      "product_status": {
        "known_affected": [
          "T027074",
          "2951"
        ]
      },
      "release_date": "2023-04-04T22:00:00.000+00:00",
      "title": "CVE-2023-28998"
    },
    {
      "cve": "CVE-2023-28999",
      "product_status": {
        "known_affected": [
          "T027076",
          "T027077",
          "2951",
          "T027079"
        ]
      },
      "release_date": "2023-04-04T22:00:00.000+00:00",
      "title": "CVE-2023-28999"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.