8.8

CVE-2023-35928

Nextcloud user scoped external storage can be used to gather credentials of other users

User scoped external storage can be used to gather credentials of other users

Nextcloud Server is a space for data storage on Nextcloud, a self-hosted productivity playform. In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 19.0.0 until 19.0.13.9, 20.0.0 until 20.0.14.14, 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, a user could use this functionality to get access to the login credentials of another user and take over their account. This issue has been patched in Nextcloud Server versions 25.0.7 and 26.0.2 and NextCloud Enterprise Server versions 19.0.13.9, 20.0.14.14, 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7, and 26.0.2.

Three workarounds are available. Disable app files_external. Change config setting "Allow users to mount external storage" to disabled in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages`. Change config setting to disallow users to create external storages in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages` with the types FTP, Nextcloud, SFTP, and/or WebDAV.
Mögliche Gegenmaßnahme
Server: 3 Workarounds are available: * Disable app files_external * Change config setting "Allow users to mount external storage" to disabled in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages` * Change config setting to disallow users to create external storages in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages` with the following types: - FTP - Nextcloud - SFTP - WebDAV
Enterprise Server: 3 Workarounds are available: * Disable app files_external * Change config setting "Allow users to mount external storage" to disabled in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages` * Change config setting to disallow users to create external storages in "Administration" > "External storage" settings `…/index.php/settings/admin/externalstorages` with the following types: - FTP - Nextcloud - SFTP - WebDAV
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 19.0.0 < 19.0.13.9
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 20.0.0 < 20.0.14.14
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 21.0.0 < 21.0.9.12
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 22.0.0 < 22.2.10.12
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 23.0.0 < 23.0.12.7
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 24.0.0 < 24.0.12.2
Nextcloud ≫ Nextcloud Server SwEdition- Version >= 25.0.0 < 25.0.7
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 25.0.0 < 25.0.7
Nextcloud ≫ Nextcloud Server SwEdition- Version >= 26.0.0 < 26.0.2
Nextcloud ≫ Nextcloud Server SwEditionenterprise Version >= 26.0.0 < 26.0.2
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Weitere Schwachstelleninformationen
SystemNextcloud
≫
Produkt Server
Version >= 25.0.0, < 25.0.7
Version >= 26.0.0, < 26.0.2
SystemNextcloud
≫
Produkt Enterprise Server
Version >= 19.0.0 >= 20.0.0, < 19.0.13.9
Version >= 20.0.0, < 20.0.14.14
Version >= 21.0.0, < 21.0.9.12
Version >= 22.0.0, < 22.2.10.12
Version >= 23.0.0, < 23.0.12.7
Version >= 24.0.0, < 24.0.12.2
Version >= 25.0.0, < 25.0.7
Version >= 26.0.0, < 26.0.2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.46% 0.636
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 8.4 1.7 6
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
CWE-274 Improper Handling of Insufficient Privileges

The product does not handle or incorrectly handles when it has insufficient privileges to perform an operation, leading to resultant weaknesses.