Mobile App: Credentials potentially leaked to other configured ownCloud instance

A bug in the ownCloud iOS application below version 3.4.4 may leak credentials as well as cookies used for authentication purposes to other configured ownCloud instances. Specifically, the ownCloud iOS application allows users to connect to multiple ownCloud instances offering an easy way to swit...

Server: Privilege escalation in the calendar application

Due to not properly checking the ownership of an calendar, an authenticated attacker is able to download calendars of other users via the "calendarid" GET parameter to /apps/calendar/ajax/events.php Note: Successful exploitation of this privilege escalation requires the "calendar" app to be enabl...

Server: Password autocompletion

Index.php aka the login page contains a form that does not disable the autocomplete setting for the password parameter, which makes it easier for local users or physically proximate attackers to obtain the password from web browsers that support autocomplete. For more information please consult t...

Server: Multiple SQL injection

ownCloud before 5.0.6 does not neutralize special elements that are passed to the SQL query in lib/db.php which therefore allows an authenticated attacker to execute arbitrary SQL commands. CVE-2013-2045 ownCloud before 5.0.6 and 4.5.11 does not neutralize special elements that are passed to the...

contacts: SQL Injection - ownCloud

ownCloud before 5.0.1 does not neutralize special elements that are passed to the SQL query in addressbookprovider.php which therefore allows an authenticated attacker to execute arbitrary SQL commands. Affected Software ownCloud Server 5.0.1 CVE-2013-1893 Action Taken It is recommended that all...

Server: user_migrate: Local file disclosure

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.0.13 and 4.5.8 allows an authenticated remote attacker to import arbitrary files on the server inside his user account. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Insecure Direct Object Reference in external storage - ownCloud

Insecure Direct Object Reference in external storage configuration may allow an authenticated attacker to change configuration of external storage of another user as well as gain access to credentials...

Missing user validation leading to information disclosure

Deleting users with certain names caused system files to be deleted. Risk is higher for systems which allow users to register themselves and have the data directory in the web root...

Server: Information Exposure Through Directory Listing in the file scanner

Due to an incorrect usage of an ownCloud internal file system function the passed path to the file scanner was resolved relatively. An authenticated adversary may thus be able to get a listing of files existing on the filesystem. However, it is not possible to access any of these files. This caus...

Server: Bypass of file blacklist

A blacklist bypass vulnerability including UTF-8 encoding in file paths in the mentioned ownCloud versions, allows authenticated remote attackers to bypass the file blacklist and upload files such as the .htaccess files. An attacker could leverage this bypass by uploading a .htaccess and execute...

Local file disclosure due to the preview system - ownCloud

ownCloud includes a preview system which generates the small thumbnails shown in the file list of the web interface. This functionality can be controlled with the enablepreviews switch in config.php and is enabled by default. Multiple unspecified vulnerabilities have been found within the preview...

Server: Login bypass when using the external FTP user backend

ownCloud provides multiple user backends that can be used to authenticate users. One of those backend providers is "userexternal", which authenticates users against FTP, IMAP or SMB servers. This is mainly useful when it is not possible to authenticate against an LDAP server. The FTP backend...

Local file disclosure when running on Windows - ownCloud

Due to not rejecting "" as path separator in all ownCloud versions prior to 5.0.4 including the 4.x branch an authenticated remote attacker is able to download arbitrary files from the server when running under Windows. This vulnerability exists inside our used DAV implementation "SabreDAV" and...

Reflected XSS in the file list - ownCloud

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. Affected Software ownCloud Server 4.0.5 CVE-2012-4394 Action Taken It is recommended that all instances are upgraded ...

Several CSRF security fixes - ownCloud

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 addBookmark.php in bookmarks/ajax/ delBookmark.php in bookmarks/ajax/ editBookmark.php in bookmarks/ajax/...

Server: Resource Exthaustion when sanitizing filenames

The sanitization component for filenames was vulnerable to DoS when parsing specially crafted file names passed via specific endpoints. Effectively this lead to a endless loop filling the log file until the system is not anymore responsive. For more information please consult the official advisor...

Server: Command injection when using external SMB storage

The external SMB storage of ownCloud was not properly neutralizing all special elements which allows an adversary to execute arbitrary SMB commands. This was caused by improperly sanitizing the ; character which is interpreted as command separator by smbclient the used software to connect to SMB...

Server: Stored XSS in "bookmarks" application

Due to not sanitising all user provided input, the "bookmarks" application shipped with the below mentioned ownCloud versions is vulnerable to a stored Cross-site scripting attack. The "bookmarks" application is disabled by default. Abusing this vulnerability requires the user to import a malicio...

Server: Improper authorization checks in files_external

Due to not verifying whether an user has been granted access to add external storages an authenticated user could even mount external storage e.g. SMB/FTP/etc. without permission. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Server: Insufficiently random values

The rand and mtrand functions in PHP 5.4.x do not produce cryptographically strong random numbers, which allows attackers to leverage exposures in products that rely on these functions for security-relevant functionality, as demonstrated by the password-reset functionality in ownCloud 4.0.x. For...

Server: Auth bypass in index.php

index.php before ownCloud 4.0.7 does not properly validate the octoken cookie, which allows remote attackers to bypass authentication via a crafted octoken cookie value. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Server: Command injection when using external SMB storage

The external legacy SMB storage not using php-libsmbclient of ownCloud was not properly neutralizing all special elements which allows an adversary to execute arbitrary SMB commands. Effectively this allows an attacker to gain access to any file on the system or overwrite it, potentially leading ...

Server: Local file inclusion on MS Windows Platform

Due to an improper control of the filename for a requireonce statement in the routing component a limited local file inclusion vulnerability is existent in all below mentioned ownCloud versions when running on the MS Windows Platform. Depending on the ownCloud configuration and the authentication...

Server: Improper authorization checks in core

Due to an improper authorization check in core an attacker with access to at least two user account is able to access the file names of other users. Our post-mortem audit showed that this vulnerability does not leak any content of the file or the directory structure except the filename. For more...

Code execution in external storage - ownCloud

Due to not sufficiently sanitizing the user input in "settings/personal.php" in ownCloud 4.5.x before 4.5.6 an authenticated remote attackers may be able to execute arbitrary code by entering special crafted PHP code in the mount point settings. Affected Software ownCloud Server 4.5.6 CVE-2013-02...

Multiple XSS vulnerabilities - ownCloud

Multiple cross-site scripting XSS vulnerabilities in ownCloud 4.5.0 allow remote attackers to inject arbitrary web script or HTML via the filename to to versions.js in apps/filesversions/js/ the filename to filelist.js in apps/files/js/ the event title to fullcalendar.js in...

Server: Code execution in /lib/migrate.php

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. For more information please consult the official advisory. This advisory...

Server: User enumeration

apps/calendar/appinfo/remote.php and apps/contacts/appinfo/remote.php in ownCloud before 4.0.7 allows remote authenticated users to enumerate the registered users via unspecified vectors. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Incomplete blacklist vulnerability - ownCloud

Incomplete blacklist vulnerability in apps/contacts/import.php and apps/contacts/ajax/uploadimport.php in ownCloud before 4.0.13 and 4.5.8 allows an authenticated remote attacker to upload a .htaccess file and therefore the execution of arbitrary PHP code in a standard Apache installation. Affect...

Server: Multiple XSS vulnerabilities

Multiple cross-site scripting XSS vulnerabilities in ownCloud 4.5.0 allow remote attackers to inject arbitrary web script or HTML via the filename to to versions.js in apps/filesversions/js/ the filename to filelist.js in apps/files/js/ the event title to fullcalendar.js in...

Server: Disclosure of files that begin with ".v" due to unchecked return value

Due to a incorrect usage of the getOwner function of the ownCloud virtual filesystem,done authenticated users with incoming shares of other users are able to access files beginning with ".v" of the sharing user. This can only be exploited if the "filesversions" application is enabled on the serve...

Server: Calendar export: Authorization Bypass Through User-Controlled Key

Due to not properly checking the ownership of an calendar, an authenticated attacker is able to download calendars of other users via the "calid" GET parameter to export.php in /apps/calendar/ For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Server: Stored XSS in "activity" application

Due to not sanitising all user provided input, the "activity" application shipped with the mentioned ownCloud versions is vulnerable to stored cross-site scripting attacks. The "activity" application is enabled by default in the ownCloud Community Edition and Enterprise Edition. Successful...

Server: Local file disclosure due to the preview system

ownCloud includes a preview system which generates the small thumbnails shown in the file list of the web interface. This functionality can be controlled with the enablepreviews switch in config.php and is enabled by default. Multiple unspecified vulnerabilities have been found within the preview...

Server: Local file inclusion in core

Due to an improper control of the filename for a requireonce statement in the routing component a limited local file inclusion vulnerability is existent in all below mentioned ownCloud versions. Depending on the ownCloud configuration and the authentication state of a remote attacker this...

Server: Multiple XSS vulnerabilities

Multiple cross-site scripting XSS vulnerabilities in ownCloud 4.5.5 and 4.0.10 and all prior versions allow remote attackers to inject arbitrary web script or HTML via the GET parameters to resetpassword.php in core/lostpassword/templates/ CVE-2013-0201 Commits: c05c8ab stable45, 4e2b834 stable4...

Server: XSS vulnerability in bookmarks

A cross-site scripting XSS vulnerability in ownCloud before 4.5.5 and 4.0.10 allow remote attackers to inject arbitrary web script or HTML via the PATH data to index.php in apps/bookmark/ For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Authenticated account enumeration in sharing dialog - ownCloud

The sharing dialog implements a user enumeration mitigation to prevent an authenticated user from getting a list of all accounts registered on the instance via the auto-complete dropdown. In the default configuration at least 3 characters of the name or email of the share-receiver “Sharee” must...

Users can mount the local filesystem - ownCloud

Due to not properly sanitzing the mount configuration authenticated users are able to mount the local filesystem into their ownCloud. A successful exploit requires the filesexternal app to be enabled. Affected Software ownCloud Server 6.0.2 ownCloud Server 5.0.15 Action Taken It is recommended th...

Insecure Flash Cross Domain policies - ownCloud

Due to insecure Flash Cross Domain policies an attacker might gain access to stored files of the user. Affected Software ownCloud Server 6.0.2 CVE-2014-2047 ownCloud Server 5.0.15 CVE-2014-2049 Action Taken All packaged Flash files have been audited whether they have potentially insecure Cross...

Server: LDAP injection

Due to not properly sanitizing the LDAP queries an attacker is able to: Gain information about existing LDAP users Modify the login query, e.g. with a wildcard For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Server: CSRF token leakage

The configuration loader in ownCloud 5.0.x before 5.0.6 includes private data such as CSRF tokens in a JavaScript file, which allows remote attackers to obtain sensitive information. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Insufficient RSA Host Key validation in files_external (SFTP driver) - ownCloud

The SFTP external storage driver was verifying the RSA Host Key after logging in. This allows for a man-in-the-middle MITM attack even if the host key is already known and can be validated. Basically, at the point where the host key was validated, the secret has already been given away. It should...

Enumeration of shared files in documents - ownCloud

Due to using the auto-incrementing fileid instead of the random generated token to access files in the documents app an authenticated users could enumerate shared files of other users. Affected Software ownCloud Server 6.0.3 CVE-2014-3837 Action Taken We replaced the usage of fileid with our rand...

Server: Improper authorization checks in contacts

Due to not verifying whether an user has been granted access to an address book, authenticated users are able to access arbitrary contacts of other users. For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

CSRF token leakage - ownCloud

The configuration loader in ownCloud 5.0.x before 5.0.6 includes private data such as CSRF tokens in a JavaScript file, which allows remote attackers to obtain sensitive information. Affected Software ownCloud Server 5.0.6 CVE-2013-2086 Action Taken It is recommended that all instances are upgrad...

Privilege escalation in the calendar application - ownCloud

Due to not properly checking the ownership of an calendar, an authenticated attacker is able to download calendars of other users via the "calid" GET parameter to export.php in /apps/calendar/ Affected Software ownCloud Server 4.5.7 CVE-2013-0304 Action Taken It is recommended that all instances...

Server: XSS vulnerability in user_webdavauth

A cross-site scripting XSS vulnerability in ownCloud 4.5.x before 4.5.2 allow remote attackers to inject arbitrary web script or HTML via the POST data to settings.php in apps/userwebdavauth/ For more information please consult the official advisory. This advisory is licensed CC BY-SA 4.0...

Server: CSRF in appconfig.php

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. For more information please consult the official advisory. This advisory is...

Server: Several CSRF security fixes

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 addBookmark.php in bookmarks/ajax/ delBookmark.php in bookmarks/ajax/ editBookmark.php in bookmarks/ajax/...