CVE-2023-48239 (GCVE-0-2023-48239)

Vulnerability from cvelistv5 – Published: 2023-11-21 21:02 – Updated: 2025-06-10 13:59
VLAI?
Summary
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and starting in version 20.0.0 and prior to versions 20.0.14.16, 21.0.9.13, 22.2.10.15, 23.0.12.12, 24.0.12.8, 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Enterprise Server, a malicious user could update any personal or global external storage, making them inaccessible for everyone else as well. Nextcloud Server 25.0.13, 26.0.8, and 27.1.3 and Nextcloud Enterprise Server is upgraded to 20.0.14.16, 21.0.9.13, 22.2.10.15, 23.0.12.12, 24.0.12.8, 25.0.13, 26.0.8, and 27.1.3 contain a patch for this issue. As a workaround, disable app files_external. This workaround also makes the external storage inaccessible but retains the configurations until a patched version has been deployed.
Severity ?
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
nextcloud security-advisories Affected: >= 25.0.0, < 25.0.13
Affected: >= 26.0.0, < 26.0.8
Affected: >= 27.0.0, < 27.1.3
Affected: >= 20.0.0, < 20.0.14.16
Affected: >= 21.0.0, < 21.0.9.13
Affected: >= 22.0.0, < 22.2.10.15
Affected: >= 23.0.0, < 23.0.12.12
Affected: >= 24.0.0, < 24.0.12.8
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As a workaround, disable app files_external. This workaround also makes the external storage inaccessible but retains the configurations until a patched version has been deployed.\"},{\"lang\":\"es\",\"value\":\"Nextcloud Server proporciona almacenamiento de datos para Nextcloud, una plataforma en la nube de c\u00f3digo abierto. A partir de la versi\u00f3n 25.0.0 y anteriores a las versiones 25.0.13, 26.0.8 y 27.1.3 de Nextcloud Server y a partir de la versi\u00f3n 20.0.0 y anteriores a las versiones 20.0.14.16, 21.0.9.13, 22.2.10.15, 23.0. 12.12, 24.0.12.8, 25.0.13, 26.0.8 y 27.1.3 de Nextcloud Enterprise Server, un usuario malintencionado podr\u00eda actualizar cualquier almacenamiento externo personal o global, haci\u00e9ndolo inaccesible para todos los dem\u00e1s tambi\u00e9n. Nextcloud Server 25.0.13, 26.0.8 y 27.1.3 y Nextcloud Enterprise Server se actualizan a 20.0.14.16, 21.0.9.13, 22.2.10.15, 23.0.12.12, 24.0.12.8, 25.0.13, 26.0.8 y 27.1.3 contiene un parche para este problema. Como workaround, deshabilite la aplicaci\u00f3n files_external. 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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.