CVSS: 3.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-32655 – Files Drop public link can be added as federated share
https://notcve.org/view.php?id=CVE-2021-32655
01 Jun 2021 — 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. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jv • CWE-241: Improper Handling of Unexpected Data Type •
CVSS: 9.1EPSS: 0%CPEs: 3EXPL: 0CVE-2021-32654 – Attacker can obtain write access to any federated share/public link
https://notcve.org/view.php?id=CVE-2021-32654
01 Jun 2021 — 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 receive write/read privileges on any Federated File Share. Since public links can be added as federated file share, this can also be exploited on any public link. Users can upgrade to patched versions (19.0.11, 20.0.10 or 21.0.2) or, as a workaround, disable federated file sharing. Nextcloud Server es un paquete de Nextcloud que maneja el almacenamiento de datos. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 • CWE-639: Authorization Bypass Through User-Controlled Key •
CVSS: 4.0EPSS: 0%CPEs: 3EXPL: 0CVE-2021-32653 – Default settings leak federated cloud ID to lookup server of all users
https://notcve.org/view.php?id=CVE-2021-32653
01 Jun 2021 — Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist. Nextcloud Server es un paquete de Nextcloud que maneja el almacenamiento de datos. Nextcloud Server versiones anteriores 19.0.11, 20.0.10 o 21.0.2, envían los ID de usuario... • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-396j-vqpr-qg45 • CWE-201: Insertion of Sensitive Information Into Sent Data •
CVSS: 6.7EPSS: 0%CPEs: 2EXPL: 2CVE-2020-8296
https://notcve.org/view.php?id=CVE-2020-8296
03 Mar 2021 — Nextcloud Server prior to 20.0.0 stores passwords in a recoverable format even when external storage is not configured. Nextcloud Server versiones anteriores a 20.0.0, almacena las contraseñas en un formato recuperable inclusive cuando el almacenamiento externo no está configurado • https://github.com/nextcloud/server/issues/17439 • CWE-257: Storing Passwords in a Recoverable Format CWE-521: Weak Password Requirements •
CVSS: 4.8EPSS: 0%CPEs: 2EXPL: 1CVE-2021-22878
https://notcve.org/view.php?id=CVE-2021-22878
03 Mar 2021 — Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`. Nextcloud Server versiones anteriores a 20.0.6, es vulnerable a un ataque de tipo cross-site scripting (XSS) reflejado debido a una falta de saneamiento en "OC.Notification.show" • https://github.com/nextcloud/server/pull/25234 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 1CVE-2021-22877
https://notcve.org/view.php?id=CVE-2021-22877
03 Mar 2021 — A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet. Una falta de comprobación de usuario en Nextcloud versiones anteriores a 20.0.6, inadvertidamente llena las propias credenciales del usuario para la configuración del almacenamiento externo de otros usuarios cuando aún no están configuradas • https://github.com/nextcloud/server/issues/24600 • CWE-284: Improper Access Control CWE-862: Missing Authorization •
CVSS: 5.4EPSS: 0%CPEs: 3EXPL: 0CVE-2020-8294
https://notcve.org/view.php?id=CVE-2020-8294
03 Feb 2021 — A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format. Una falta comprobación de enlace en Nextcloud Server versiones anteriores a 20.0.2, 19.0.5, 18.0.11, permite una ejecución de un ataque de tipo XSS almacenado usando Internet Explorer cuando se guarda una URL "javascript:" en formato markdown • https://hackerone.com/reports/1023787 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1CVE-2020-8295
https://notcve.org/view.php?id=CVE-2020-8295
26 Jan 2021 — A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user. Una comprobación equivocada en Nextcloud Server versiones 19 y anteriores, permitió llevar a cabo un ataque de denegación de servicio al restablecer la contraseña de un usuario • https://hackerone.com/reports/812754 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-8293
https://notcve.org/view.php?id=CVE-2020-8293
26 Jan 2021 — A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules. Una falta de comprobación de la entrada en Nextcloud Server versiones anteriores a 20.0.2, 19.0.5, 18.0.11, permite a usuarios almacenar datos ilimitados en reglas de flujo de trabajo que causan una carga y una potencial DDoS en interacciones posteriores y uso con esas reglas • https://hackerone.com/reports/1018146 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 8.1EPSS: 0%CPEs: 1EXPL: 1CVE-2020-8259
https://notcve.org/view.php?id=CVE-2020-8259
16 Nov 2020 — Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the encryption keys. Una protección insuficiente de las claves de cifrado del lado del servidor en Nextcloud Server versión 19.0.1, permitió a un atacante reemplazar las claves de cifrado • https://hackerone.com/reports/732431 • CWE-522: Insufficiently Protected Credentials •