CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 1CVE-2022-24741 – High memory usage in Nextcloud server
https://notcve.org/view.php?id=CVE-2022-24741
Nextcloud server is an open source, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag. El servidor Nextcloud es una plataforma de servicios de código abierto, de estilo de nube autoalojada. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf3h-xf4q-mh89 https://github.com/nextcloud/server/pull/30291 https://hackerone.com/reports/1261225 https://security.gentoo.org/glsa/202208-17 • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 4.3EPSS: 0%CPEs: 3EXPL: 0CVE-2021-41241 – Advanced permissions is not respected for subfolders in Nextcloud server
https://notcve.org/view.php?id=CVE-2021-41241
Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting "advanced permissions" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. • https://github.com/nextcloud/groupfolders/issues/1692 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94 https://github.com/nextcloud/server/pull/29362 https://security.gentoo.org/glsa/202208-17 • CWE-862: Missing Authorization CWE-863: Incorrect Authorization •
CVSS: 5.3EPSS: 0%CPEs: 3EXPL: 0CVE-2021-41239 – User enumeration setting not respected in Nextcloud server
https://notcve.org/view.php?id=CVE-2021-41239
Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx https://github.com/nextcloud/server/issues/27122 https://github.com/nextcloud/server/pull/29260 https://security.gentoo.org/glsa/202208-17 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-862: Missing Authorization •