An issue was discovered in ownCloud owncloud/core before 10.13.1. An attacker can access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured. This occurs because pre-signed URLs can be accepted even when no signing-key is configured for the owner of the files. The earliest affected version is 10.6.0.

The installation routine in ownCloud Server before 4.0.14, 4.5.x before 4.5.9, and 5.0.x before 5.0.4 uses the time function to seed the generation of the PostgreSQL database user password, which makes it easier for remote attackers to guess the password via a brute force attack.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud Server before 4.0.8 allow remote attackers to inject arbitrary web script or HTML via the (1) readyCallback parameter to apps/files_odfviewer/src/webodf/webodf/flashput/PUT.swf, the (2) root parameter to apps/gallery/templates/index.php, or a (3) malformed query to lib/db.php.

Unspecified vulnerability in ownCloud Server before 4.0.12 allows remote attackers to obtain sensitive information via unspecified vectors related to "inclusion of the Amazon SDK testing suite." NOTE: due to lack of details, it is not clear whether the issue exists in ownCloud itself, or in Amazon SDK.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud 4.5.x before 4.5.8 allow remote authenticated users with administrator privileges to inject arbitrary web script or HTML via the (1) quota parameter to /core/settings/ajax/setquota.php, or remote authenticated users with group admin privileges to inject arbitrary web script or HTML via the (2) group field to settings.php or (3) "share with" field.

The HTML\Browser plugin in SabreDAV before 1.6.9, 1.7.x before 1.7.7, and 1.8.x before 1.8.5, as used in ownCloud, when running on Windows, does not properly check path separators in the base path, which allows remote attackers to read arbitrary files via a \ (backslash) character.

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.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud before 4.0.12 and 4.5.x before 4.5.7 allow remote authenticated administrators to inject arbitrary web script or HTML via the (1) site_name or (2) site_url parameter to apps/external/ajax/setsites.php.

Multiple cross-site request forgery (CSRF) vulnerabilities in ownCloud 4.5.x before 4.5.7 allow remote attackers to hijack the authentication of users for requests that (1) change the default view via the v parameter to apps/calendar/ajax/changeview.php, mount arbitrary (2) Google Drive or (3) Dropbox folders via vectors related to addRootCertificate.php, dropbox.php and google.php in apps/files_external/ajax/, or (4) change the authentication server URL via unspecified vectors to apps/user_webdavauth/settings.php.

Cross-site request forgery (CSRF) vulnerability in apps/calendar/ajax/settings/settimezone in ownCloud before 4.0.12 allows remote attackers to hijack the authentication of users for requests that change the timezone via the timezone parameter.

ownCloud Server before 4.5.7 does not properly check ownership of calendars, which allows remote authenticated users to read arbitrary calendars via the calid parameter to /apps/calendar/export.php. NOTE: this issue has been reported as a cross-site request forgery (CSRF) vulnerability, but due to lack of details, it is uncertain what the root cause is.

Cross-site scripting (XSS) vulnerability in settings.php in ownCloud before 4.0.12 and 4.5.x before 4.5.7 allows remote administrators to inject arbitrary web script or HTML via the group input field parameter.

Multiple incomplete blacklist vulnerabilities in (1) import.php and (2) ajax/uploadimport.php in apps/contacts/ in ownCloud before 4.0.13 and 4.5.x before 4.5.8 allow remote authenticated users to execute arbitrary PHP code by uploading a .htaccess file.

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.0.13 and 4.5.x before 4.5.8, when the user_migrate application is enabled, allows remote authenticated users to import arbitrary files to the user's account via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud 4.5.x before 4.5.7 allow remote attackers to inject arbitrary web script or HTML via (1) a crafted iCalendar file to the calendar application, the (2) dir or (3) file parameter to apps/files_pdfviewer/viewer.php, or the (4) mountpoint parameter to /apps/files_external/addMountPoint.php.

CRLF injection vulnerability in ownCloud Server before 4.0.8 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the url path parameter.

lib/base.php in ownCloud before 4.0.8 does not properly validate the user_id session variable, which allows remote authenticated users to read arbitrary files via vectors related to WebDAV.

settings/personal.php in ownCloud 4.5.x before 4.5.6 allows remote authenticated users to execute arbitrary PHP code via crafted mount point settings.

Multiple cross-site request forgery (CSRF) vulnerabilities in ownCloud before 4.0.12 and 4.5.x before 4.5.7 allow remote attackers to hijack the authentication of users for requests that (1) change the timezone for the user via the lat and lng parameters to apps/calendar/ajax/settings/guesstimezone.php, (2) disable or enable the automatic timezone detection via the timezonedetection parameter to apps/calendar/ajax/settings/timezonedetection.php, (3) import user accounts via the admin_export parameter to apps/admin_migrate/settings.php, (4) overwrite user files via the operation parameter to apps/user_migrate/ajax/export.php, or (5) change the authentication server URL via unspecified vectors to apps/user_ldap/settings.php.

Unspecified vulnerability in core/ajax/translations.php in ownCloud before 4.0.12 and 4.5.x before 4.5.6 allows remote authenticated users to execute arbitrary PHP code via unknown vectors. NOTE: this entry has been SPLIT due to different affected versions. The core/settings.php issue is covered by CVE-2013-7344.