CVE-2021-22896
https://notcve.org/view.php?id=CVE-2021-22896
Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users. Nextcloud Mail versiones anteriores a 1.9.5, sufre de un control de acceso inapropiado debido a una falta de comprobación de permisos que permite a otros usuarios autenticados crear alias de correo para otros usuarios • https://github.com/nextcloud/mail/pull/4864 https://github.com/nextcloud/mail/releases/tag/v1.9.5 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3 https://hackerone.com/reports/1129996 • CWE-862: Missing Authorization •
CVE-2021-22915
https://notcve.org/view.php?id=CVE-2021-22915
Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection. Nextcloud server versiones anteriores a 19.0.11, 20.0.10 y 21.0.2, es vulnerable a ataques de fuerza bruta debido a una falta de inclusión de subredes IPv6 en las consideraciones de limitación de velocidad. Esto podría potencialmente resultar en que un atacante omita los controles de limitación de velocidad, como la protección de fuerza bruta de Nextcloud • https://hackerone.com/reports/1154003 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AGXGR6HYGQ6MZXISMJEHCOXRGRFRUFMA https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S https://nextcloud.com/security/advisory/?id=NC-SA-2021-009 • CWE-307: Improper Restriction of Excessive Authentication Attempts •
CVE-2021-22912
https://notcve.org/view.php?id=CVE-2021-22912
Nextcloud iOS before 3.4.2 suffers from an information disclosure vulnerability when searches for sharees utilize the lookup server by default instead of only on the local Nextcloud server unless a global search has been explicitly chosen by the user. Nextcloud iOS versiones anteriores a 3.4.2, sufre una vulnerabilidad de divulgación de información cuando las búsquedas de recursos compartidos utilizan el servidor de búsqueda por defecto en lugar de sólo el servidor local de Nextcloud, a menos que una búsqueda global haya sido elegida explícitamente por el usuario • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m7w4-cvjr-76mh https://hackerone.com/reports/1167919 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVE-2021-32658 – Sensitive data may not be removed from storage on account removal
https://notcve.org/view.php?id=CVE-2021-32658
Nextcloud Android is the Android client for the Nextcloud open source home cloud system. Due to a timeout issue the Android client may not properly clean all sensitive data on account removal. This could include sensitive key material such as the End-to-End encryption keys. It is recommended that the Nextcloud Android App is upgraded to 3.16.1 Nextcloud Android es el cliente Android para el sistema de nube doméstica de código abierto Nextcloud. Debido a un problema de tiempo de espera, el cliente de Android podría no limpiar apropiadamente todos los datos confidenciales al eliminar la cuenta. • https://github.com/nextcloud/android/commit/355f3c745b464b741b20a3b96597303490c26333 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g5gf-rmhm-wpxw https://hackerone.com/reports/1189168 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer •
CVE-2021-32657 – Malicious user could break user administration page
https://notcve.org/view.php?id=CVE-2021-32657
Nextcloud Server is a Nextcloud package that handles data storage. In versions of Nextcloud Server prior to 10.0.11, 20.0.10, and 21.0.2, a malicious user may be able to break the user administration page. This would disallow administrators to administrate users on the Nextcloud instance. The vulnerability is fixed in versions 19.0.11, 20.0.10, and 21.0.2. As a workaround, administrators can use the OCC command line tool to administrate the Nextcloud users. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fx62-q47f-f665 https://hackerone.com/reports/1147611 https://security.gentoo.org/glsa/202208-17 • CWE-400: Uncontrolled Resource Consumption •