owncloud/core

The fetch function in OAuth/Curl.php in Dropbox-PHP, as used in ownCloud Server before 6.0.8, 7.x before 7.0.6, and 8.x before 8.0.4 when an external Dropbox storage has been mounted, allows remote administrators of Dropbox.com to read arbitrary files via an @ (at sign) character in unspecified POST values.

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.

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.

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 Scripting attack.

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.

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 existing files.

Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a content-spoofing attack 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.

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. However, Firefox running on Microsoft Windows would offer the user to open the data in the browser as an HTML document. Thus any injected data in the log would be executed.

The files_external app in ownCloud Server before 7.0.9, 8.0.x before 8.0.7, and 8.1.x before 8.1.2 allows remote authenticated users to instantiate arbitrary classes and possibly execute arbitrary code via a crafted mount point option, related to "objectstore."

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud 4.5.5, 4.0.10, and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) QUERY_STRING to core/lostpassword/templates/resetpassword.php, (2) mime parameter to apps/files/ajax/mimeicon.php, or (3) token parameter to apps/gallery/sharing.php.

ownCloud 4.0.x before 4.0.10 and 4.5.x before 4.5.5 does not properly restrict access to settings.php, which allows remote attackers to edit app configurations of user_webdavauth and user_ldap by editing this file.

Cross-site scripting (XSS) vulnerability in bookmarks/js/bookmarks.js in ownCloud 4.0.x before 4.0.10 and 4.5.x before 4.5.5 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to apps/bookmark/index.php.

Cross-site scripting (XSS) vulnerability in apps/user_webdavauth/settings.php in ownCloud 4.5.x before 4.5.2 allows remote attackers to inject arbitrary web script or HTML via arbitrary POST parameters.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud before 4.0.9 and 4.5.0 allow remote attackers to inject arbitrary web script or HTML via the (1) file name to apps/files_versions/js/versions.js or (2) apps/files/js/filelist.js; or (3) event title to 3rdparty/fullcalendar/js/fullcalendar.js.

Incomplete blacklist vulnerability in lib/filesystem.php in ownCloud before 4.0.9 and 4.5.x before 4.5.2 allows remote authenticated users to execute arbitrary PHP code by uploading a file with a special crafted name.

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.5.2 allows remote authenticated users to execute arbitrary PHP code by uploading a crafted mount.php file in a ZIP file.

The "Lost Password" reset functionality in ownCloud before 4.0.9 and 4.5.0 does not properly check the security token, which allows remote attackers to change an accounts password via unspecified vectors related to a "Remote Timing Attack."

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud before 4.0.1 allow remote attackers to inject arbitrary web script or HTML via the (1) calendar displayname to part.choosecalendar.rowfields.php or (2) part.choosecalendar.rowfields.shared.php in apps/calendar/templates/; or (3) unspecified vectors to apps/contacts/lib/vcard.php.

appconfig.php in ownCloud before 4.0.6 does not properly restrict access, which allows remote authenticated users to edit app configurations via unspecified vectors. NOTE: this can be leveraged by unauthenticated remote attackers using CVE-2012-4393.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud before 4.0.2 allow remote attackers to inject arbitrary web script or HTML via the (1) file names to apps/user_ldap/settings.php; (2) url or (3) title parameter to apps/bookmarks/ajax/editBookmark.php; (4) tag or (5) page parameter to apps/bookmarks/ajax/updateList.php; (6) identity to apps/user_openid/settings.php; (7) stack name in apps/gallery/lib/tiles.php; (8) root parameter to apps/gallery/templates/index.php; (9) calendar displayname in apps/calendar/templates/part.import.php; (10) calendar uri in apps/calendar/templates/part.choosecalendar.rowfields.php; (11) title, (12) location, or (13) description parameter in apps/calendar/lib/object.php; (14) certain vectors in core/js/multiselect.js; or (15) artist, (16) album, or (17) title comments parameter in apps/media/lib_scanner.php.

Cross-site scripting (XSS) vulnerability in index.php in ownCloud before 4.0.3 allows remote attackers to inject arbitrary web script or HTML via the redirect_url parameter.

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.0.7 allows remote attackers to execute arbitrary code by uploading a crafted .htaccess file in an import.zip file and accessing an uploaded PHP file.

Cross-site scripting (XSS) vulnerability in apps/files/js/filelist.js in ownCloud before 4.0.5 allows remote attackers to inject arbitrary web script or HTML via the file parameter.

Multiple cross-site request forgery (CSRF) vulnerabilities in ownCloud before 4.0.6 allow remote attackers to hijack the authentication of arbitrary users for requests that use (1) addBookmark.php, (2) delBookmark.php, or (3) editBookmark.php in bookmarks/ajax/; (4) calendar/delete.php, (5) calendar/edit.php, (6) calendar/new.php, (7) calendar/update.php, (8) event/delete.php, (9) event/edit.php, (10) event/move.php, (11) event/new.php, (12) import/import.php, (13) settings/setfirstday.php, (14) settings/settimeformat.php, (15) share/changepermission.php, (16) share/share.php, (17) or share/unshare.php in calendar/ajax/; (18) external/ajax/setsites.php, (19) files/ajax/delete.php, (20) files/ajax/move.php, (21) files/ajax/newfile.php, (22) files/ajax/newfolder.php, (23) files/ajax/rename.php, (24) files_sharing/ajax/email.php, (25) files_sharing/ajax/setpermissions.php, (26) files_sharing/ajax/share.php, (27) files_sharing/ajax/toggleresharing.php, (28) files_sharing/ajax/togglesharewitheveryone.php, (29) files_sharing/ajax/unshare.php, (30) files_texteditor/ajax/savefile.php, (31) files_versions/ajax/rollbackVersion.php, (32) gallery/ajax/createAlbum.php, (33) gallery/ajax/sharing.php, (34) tasks/ajax/addtask.php, (35) tasks/ajax/addtaskform.php, (36) tasks/ajax/delete.php, or (37) tasks/ajax/edittask.php in apps/; or administrators for requests that use (38) changepassword.php, (39) creategroup.php, (40) createuser.php, (41) disableapp.php, (42) enableapp.php, (43) lostpassword.php, (44) removegroup.php, (45) removeuser.php, (46) setlanguage.php, (47) setloglevel.php, (48) setquota.php, or (49) togglegroups.php in settings/ajax/.

index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.

Cross-site request forgery (CSRF) vulnerability in core/ajax/appconfig.php in ownCloud before 4.0.7 allows remote attackers to hijack the authentication of administrators for requests that edit the app configurations.

(1) apps/calendar/appinfo/remote.php and (2) apps/contacts/appinfo/remote.php in ownCloud before 4.0.7 allows remote authenticated users to enumerate the registered users via unspecified vectors.