FKIE_CVE-2021-32655

Vulnerability from fkie_nvd - Published: 2021-06-01 21:15 - Updated: 2024-11-21 06:07
Severity ?
3.5 (Low) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
3.5 (Low) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Summary
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.
References
security-advisories@github.comhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvThird Party Advisory
security-advisories@github.comhttps://hackerone.com/reports/1167929Permissions Required, Third Party Advisory
security-advisories@github.comhttps://security.gentoo.org/glsa/202208-17Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1167929Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-17Third Party Advisory
Impacted products
Vendor Product Version
nextcloud nextcloud_server *
nextcloud nextcloud_server *
nextcloud nextcloud_server *
To clipboard 

{
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    {
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the \"Create\" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist."
    },
    {
      "lang": "es",
      "value": "Nextcloud Server es un paquete de Nextcloud que maneja el almacenamiento de datos. En versiones anteriores a 19.0.11, 20.0.10 y 21.0.2, un atacante es capaz de convertir un enlace de Drop de archivos en un recurso compartido federado. Esto causa un problema en el lado de la Interfaz de Usuario del usuario que comparte. Cuando el usuario que comparte abre el panel para compartir y trata de eliminar los privilegios \"Create\" de este recurso compartido inesperado, el servidor de Nextcloud concede silenciosamente al recurso compartido privilegios de lectura. La vulnerabilidad est\u00e1 parcheada en versiones 19.0.11, 20.0.10 y 21.0.2. No se sabe que existan soluciones alternativas"
    }
  ],
  "id": "CVE-2021-32655",
  "lastModified": "2024-11-21T06:07:28.150",
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        "baseSeverity": "LOW",
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}


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Sightings

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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.