Nextcloud Server vulnerabilities

CVE-2017-0890 [MEDIUM] CWE-79 CVE-2017-0890: Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerabilit Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerability in the search module. To be exploitable a user has to write or paste malicious content into the search dialogue.

CVE-2017-0893 [MEDIUM] CWE-79 CVE-2017-0893: Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are shipping a vulnerable JavaScript library fo Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are shipping a vulnerable JavaScript library for sanitizing untrusted user-input which suffered from a XSS vulnerability caused by a behaviour change in Safari 10.1 and 10.2. Note that Nextcloud employs a strict Content-Security-Policy preventing exploitation of this XSS issue on modern web browsers.

CVE-2017-0891 [MEDIUM] CWE-79 CVE-2017-0891: Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of err Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of error messages leading to XSS vulnerabilities in multiple components.

CVE-2017-0892 [LOW] CWE-285 CVE-2017-0892: Nextcloud Server before 11.0.3 is vulnerable to an improper session handling allowed an application Nextcloud Server before 11.0.3 is vulnerable to an improper session handling allowed an application specific password without permission to the files access to the users file.

CVE-2017-0895 [LOW] CWE-285 CVE-2017-0895: Nextcloud Server before 10.0.4 and 11.0.2 are vulnerable to disclosure of calendar and addressbook n Nextcloud Server before 10.0.4 and 11.0.2 are vulnerable to disclosure of calendar and addressbook names to other logged-in users. Note that no actual content of the calendar and addressbook has been disclosed.

CVE-2017-0886 [MEDIUM] CWE-674 CVE-2017-0886: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Denial of Service attack. Due to an error i Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Denial of Service attack. Due to an error in the application logic an authenticated adversary may trigger an endless recursion in the application leading to a potential Denial of Service.

CVE-2017-0887 [MEDIUM] CWE-807 CVE-2017-0887: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a bypass in the quota limitation. Due to not Nextcloud Server before 9.0.55 and 10.0.2 suffers from a bypass in the quota limitation. Due to not properly sanitizing values provided by the `OC-Total-Length` HTTP header an authenticated adversary may be able to exceed their configured user quota. Thus using more space than allowed by the administrator.

CVE-2017-0885 [MEDIUM] CWE-209 CVE-2017-0885: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a error message disclosing existence of file Nextcloud Server before 9.0.55 and 10.0.2 suffers from a error message disclosing existence of file in write-only share. Due to an error in the application logic an adversary with access to a write-only share may enumerate the names of existing files and subfolders by comparing the exception messages.

CVE-2017-0884 [MEDIUM] CWE-275 CVE-2017-0884: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders de Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders despite lacking permissions issue. Due to a logical error in the file caching layer an authenticated adversary is able to create empty folders inside a shared folder. Note that this only affects folders and files that the adversary has at least read-only

CVE-2017-0883 [MEDIUM] CWE-275 CVE-2017-0883: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS A Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set

CVE-2017-0888 [MEDIUM] CWE-451 CVE-2017-0888: Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Content-Spoofing vulnerability in the "file Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Content-Spoofing vulnerability in the "files" app. The top navigation bar displayed in the files list contained partially user-controllable input leading to a potential misrepresentation of information.

CVE-2016-9463 [HIGH] CWE-303 CVE-2016-9463: Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer fr Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer from SMB User Authentication Bypass. Nextcloud/ownCloud include an optional and not by default enabled SMB authentication component that allows authenticating users against an SMB server. This backend is implemented in a way that tries to connect to a SMB s

CVE-2016-9466 [MEDIUM] CWE-79 CVE-2016-9466: Nextcloud Server before 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from Reflected XSS in Nextcloud Server before 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from Reflected XSS in the Gallery application. The gallery app was not properly sanitizing exception messages from the Nextcloud/ownCloud server. Due to an endpoint where an attacker could influence the error message, this led to a reflected Cross-Site-Scripting vulnerabilit

CVE-2016-9464 [MEDIUM] CWE-285 CVE-2016-9464: Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing s Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implemen

CVE-2016-9459 [MEDIUM] CWE-209 CVE-2016-9459: Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vuln Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS. The download log functionality in the admin screen is delivering the log in JSON format to the end-user. The file was delivered with an attachment disposition forcing the browser to download the document. Ho

CVE-2016-9467 [MEDIUM] CWE-451 CVE-2016-9467: Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from conte Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from content spoofing in the files app. The location bar in the files app was not verifying the passed parameters. An attacker could craft an invalid link to a fake directory structure and use this to display an attacker-controlled error message to the user.

CVE-2016-9461 [MEDIUM] CWE-275 CVE-2016-9461: Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions. The WebDAV endpoint was not properly checking the permission on a WebDAV COPY action. This allowed an authenticated attacker with access to a read-only share to put new files in there. It was not possible to modify exi

CVE-2016-9462 [MEDIUM] CWE-275 CVE-2016-9462: Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying restore pri Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying restore privileges when restoring a file. The restore capability of Nextcloud/ownCloud was not verifying whether a user has only read-only access to a share. Thus a user with read-only access was able to restore old versions.

CVE-2016-9465 [MEDIUM] CWE-79 CVE-2016-9465: Nextcloud Server before 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from Stored XSS in Ca Nextcloud Server before 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from Stored XSS in CardDAV image export. The CardDAV image export functionality as implemented in Nextcloud/ownCloud allows the download of images stored within a vCard. Due to not performing any kind of verification on the image content this is prone to a stored Cross-Site

CVE-2016-9468 [MEDIUM] CWE-451 CVE-2016-9468: Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from conte Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from content spoofing in the dav app. The exception message displayed on the DAV endpoints contained partially user-controllable input leading to a potential misrepresentation of information.