CVE-2024-37882 – Nextcloud Server can reshare read&share only folder with more permissions
https://notcve.org/view.php?id=CVE-2024-37882
Nextcloud Server is a self hosted personal cloud system. A recipient of a share with read&share permissions could reshare the item with more permissions. It is recommended that the Nextcloud Server is upgraded to 26.0.13 or 27.1.8 or 28.0.4 and that the Nextcloud Enterprise Server is upgraded to 26.0.13 or 27.1.8 or 28.0.4. Nextcloud Server es un sistema de nube personal autohospedado. Un destinatario de un recurso compartido con permisos de lectura y uso compartido podría volver a compartir el elemento con más permisos. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jjm3-j9xh-5xmq https://github.com/nextcloud/server/pull/44339 https://hackerone.com/reports/2289425 • CWE-281: Improper Preservation of Permissions CWE-284: Improper Access Control •
CVE-2024-22403 – OAuth2 authorization codes are valid indefinetly in Nextcloud server
https://notcve.org/view.php?id=CVE-2024-22403
Nextcloud server is a self hosted personal cloud system. In affected versions OAuth codes did not expire. When an attacker would get access to an authorization code they could authenticate at any time using the code. As of version 28.0.0 OAuth codes are invalidated after 10 minutes and will no longer be authenticated. To exploit this vulnerability an attacker would need to intercept an OAuth code from a user session. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wppc-f5g8-vx36 https://github.com/nextcloud/server/pull/40766 https://hackerone.com/reports/1784162 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S6PN4GVJ5TZUC6WSG4X3ZA3AMPBEKNAX • CWE-613: Insufficient Session Expiration •