This issue only affects sites where module permissions are more restrictive than the page permissions on which they sit. The malicious user must the special request to use to initiate this login. This vulnerability can only be exploited by users with a valid username/password combination on a website. the site to malfunction. The file manager component has a problem where a user could upload a file of a type that does not match the list of allowable file types. The expression that could bypass the filter is only exploitable in a small subset of browsers namely Netscape Navigator 8.1 and Firefox 2.x. Going forward, DNN plans to add more functionality to the security module, to better assist DNN users in keeping their sites secure. are the same as discussed in the above link.. For further details, you can The issue is only visible with very specific configurations within the DNN Platform, and the exploit would require specific knowledge to exploit, and the resulting impact is minimal. Many email systems mark such links as phishing links, which further reduces the likelihood of clicking it. DNN Platform includes the Telerik.Web.UI.dll as part of the default installation. To fix this problem, you can Mitigating factors A malicious user can create The user profile module supports templating so these properties are optional. They can then use these to create new users, delete users, and edit existing users and roles for those users. Multiple issues have been identified that could allow a user to remotely execute a Denial of Service attack, or to utilize cross-site-scripting techniques to modify data within the DNN Platform environment. If enough of these requests are sent then resources can be consumed, leading to eventual exhaustion i.e. This could cause the SQL commands in the database scripts included with the application to re-execute. Create a SQL database for your website. Many email systems mark such links as phishing links, which further reduces the likelihood. A malicious user needs to know which API calls that didn’t validate properly and must craft a special URL to execute these calls on behalf of a legitimate user. Mitigating factors. We make every effort to ensure speedy analysis of reported issues and, where required, provide workarounds and updated application releases to fix them. Mitigating factors. To fix this problem, you are recommended to update to the latest version of DNN (7.4.2 at time of writing). A malicious user may utilize a process to include in a message a file that they might not have had the permission to view/upload, and with the methods that the DNN File system works they may be able to gain access to this file. manage files from within the CMS itself as opposed to using a service like FTP. Due to their use it is possible those issues could be exploited on a DNN Platform installation. It is possible to remotely force DotNetNuke to run through it's install/upgrade step. Some of these calls were be subject file path traversal. David Kirby of Risborrow Information Systems Ltd. Keep up with security bulletins about the DNN (formerly DotNetNuke) open source CMS and online community software platform. other users and even upload malicious code to the server. This is a bug fix release of the DNN.Events module. where  ControlSrc = 'Admin/Vendors/EditVendors.ascx'. In order As such this function has little added value, but it's removal complies with best practices. This is a recommended install as it offers protection against a number of other non-DotNetNuke specific URL based issues. The user profile function is fully templatable, a site can configure this to minimise or eliminate potential issues. Alternatively, User can choose to fill several profile properties such as first name, last name, profile picture, etc. parent.mysite.com). Please note, you will also have to remove the existing FTB editor and associated dll's i.e. They can then capture some of the site specific data integrity values and use these via a CSRF attack to alter data via these public functions for other users. working with us to help protect users: One of the new features of A malicious user must A malicious user must know how to create this link and force unsuspecting users to click it. Note regarding the Rad HTML Editor. It is possible to remotely force DotNetNuke to run through it's install wizard. are the same as discussed in the above link.. For further details, you can Information on requests, exceptions, or other actions are For versions older than 9.1.1, you can download The function uses direct filesystem methods to check for these files existence and not the DotNetNuke API so it can allow for the existence of a file with an unmapped extension to be made e.g. Resolving this issue will greatly reduce any spam registration. know the specifics of this cookie and how to decode it. A failure to verify the anti-forgery token can mean a CSRF issue occurs. The registration forms usually have only a handful of such properties defined. The DNN Community would like to thank Sajjad Pourali for reporting this issue. did not honor the permission specified for them and they could be accessed The code that handles this supports selecting the folder but fails to revalidate these permissions. Include any product updates. Sites that do not allow public/verified registration also are less likely to have unknown users who can access this vulnerable component, A logical flaw in the permissions checks for modules could allow a potential hacker to use a carefully crafted url to escalate their permissions beyond module edit permissions. Security DNN receives security updates on a regular schedule, and all information is stored on an encrypted database. In DNN when a user tries to access a restricted area, they are redirected to an “access denied” page with a message in the URL. The bulletin provides details about the issue, the DNN versions impacted, and suggested fixes or workarounds. Users must have enabled banner advertising, and must have 1 or more instances of the banner module installed for the changes to be reflected on the site. This echoes the page address with the different culture's available, but fails to remove any potential html/javascript injection. HTML5 is cross-document messaging. features, a malicious link can send users to outside of the current site Third-Party Component Integration - Core DNN integration. DNN Platform Versions 5.0.0 through 9.6.0, The DNN Community thanks the following for identifying the issue and/or working with us to help protect Users. To fix this problem, you are recommended to update to the latest version of the DNN platform (6.2.9/7.1.1 at time of writing). know exactly which WEB API methods are subject to this vulnerability and must Ben Hawkes - Lateral Security (www.lateralsecurity.com). 9.1.1 at the time of writing. It's usage predates many of the more modern Ajax libraries. A malicious user can make use of this feature to initiate a DOS attack on such sites. Since DotNetNuke 3.0 there has been a Skin Management option in the Admin interface. The update needs to be installed on all sites that use Action Grid and have a DnnSharp.Common.dll (in /bin) file version smaller than 5.0.220. The fix and the vulnerability DNN provides file-type restrictions which limit the ability for this to vulnerability to allow file uploads. To fix this problem, you can use either of these two options : Upgrade your version to either 3.3.3/4.3.3 or later - this is the recommended solution. craft a special HTTP request to generate multiple copies of an existing image A number of browsers incorrectly implement a particular HTML tag, in violation of the official W3C standards. Attacker has to guess file and folder names in the server and DNN folders. writing. Alternatively users can block access to log files by adding the following to their web.config's HttpHandler section. Note theres a host setting to disable presistent cookies ("remember me"). This cookie is rarely used. Mitigating factors, To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.6.7/6.1.3 at time of writing). to help but be assured: DNN is well-documented for various topics like marketing, development, administrators, and … to be uploaded. The core already implements HttpOnly cookies to stop XSS attacks potentially stealing authentication cookies. Mitigating factors, The user would need access to the file manager and the relevant permissions - by default this functionality is only available to portal admins and host (superusers), To fix this problem, you are recommended to update to the latest version of DotNetNuke (6.1.4 at time of writing), Click here to read more details on the DotNetnuke Security Policy. DNN installations The host user must have added the HTM or HTML file type to the default File Upload Extensions. June 21st, 2017 – DNN provides the security patch for vulnerability in third-party component suite that is used within DNN … A malicious user with specific knowledge of the exploit may add or edit files within the file system, without explicitly being granted permission. As always, do not trust updates. A potential hacker could generate a custom URL which contained an invalid viewstate value, composed of an XSS attack. One needs to know the exact way to obtain this information. To fix this problem, you are recommended to update to the latest version of DotNetNuke (7.4.1 at time of writing). However a weakness in the code means that a potential hacker can stop the redirect and gain access to the functions available to portal admins and host users. specially crafted link or to visit a webpage that contains specially crafted it does not allow unauthorized upload of new files. Some of these calls were be subject file path traversal. To protect against attacks that attempt to use invalid URL's, users can install the free Microsoft URLScan utility(http://www.microsoft.com/technet/security/tools/urlscan.mspx). To remediate this issue an upgrade to DNN Platform Version (9.6.1 or later) is required. know what kind of SWF files exist in a site and where they are in the site. An example is The malicious user must be logged in a privileged user know which API call can be utilized for path traversal and must craft a special request for this purpose. Our recommendation is to always follow DNN’s upgrade path. users must still have rights to upload a file, they can only change the intended folder. Jun 28th Critical Security Update & Vulnerability for DNN GO Modules There has been a vulnerability and security exploit discovered in the 3rd party DNN Module suite named "DNN GO". DNN Platform version 7.0.0 through 9.5.0. DNN 7.2.2 … A malicious user must know which API to utilize and send a specially crafted request to the site. DNN Platform Versions 5.0.0 through 9.6.0, The DNN Community thanks the following for identifying the issue and/or working with us to help protect Users. A malicious user may utilize a process to include in a message a file that they might not have had the permission to view/upload, and with the methods that the DNN File system works they may be able to gain access to this file. must entice a limited subset of users into viewing the information. This issue does not expose any data or causes data corruption. The FileSystem API performs a verification check for "safe" file extensions. DNN allows several file Security Center allows you view any security bulletins that might be related to the version of DNN you are currently running. Moreover, the generated message can display text only. Do you know how to determine version of DNN? It is not possible to do this with details from one instance (i.e. This would allow server-side execution of application logic. To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.4.3 at time of writing). A malicious can upload an SVG file which can contain some malicious code to steal some users’ sensitive data (cookies, etc.). A vulnerability allowed users to post some images on behalf of other users. A fix has been added to ensure that only paths relative to the website are supported. And of course, there is always the community, the forums, social media, etc. installed sites as of 9.1.0 will not have any SWF file included in them. This is the recommended manner to guarantee file security for confidential documents as it is the only method that provides a secure file check at download. To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.3.0 at time of writing), Click here to read more details on the DotNetNuke Security Policy. Upgrading to DNN Platform version 9.6.0 or later is required to mitigate this issue. This only impacted modules that are using the WebAPI interface following the DNN Security protocols (which is a smaller subset of modules). No usage of this was found in platform, or any of the modules shipped with it. DNN sites are multi-tenant and can be used to serve multiple sites within the same instance. The files InstallWizard.aspx and InstallWizard.aspx.cs must exist under Website Root\Install folder. links. It was possible to amend the name/value pairs and inject html/script which could allow hackers to perform cross-site scripting attacks. DNN thanks the following for This vulnerability only allows existing ascx files to be loaded, many of which have additional security checks, ensuring that they could not be exploited. To fix this problem, you are recommended to update to the latest version of DotNetNuke (4.8.2 at time of writing). Mitigating factors, User may have a valid account to login and must have permissions to upload files, If a user has edit permissions to a module, this incorrect grants them access to manage the module, allowing them to access all permissions and change them as desired. Anti-forgery token called RequestVerificationToken is used in DNN Web APIs to help prevent Cross-Site Request Forgery (CSRF) attacks. Users can share some content with other users in a DNN site and can include images in their posts. DNN provides a user account mechanism that can be used to register users in the system. All DNN sites running any version prior to 9.2.0. But if you have a third party MVC module(s) you might be Super Users only, restrict to Administrators, etc. To fix this problem, you are recommended to update to the latest versions of the Products - DNN Platform 9.0.2 or EVOQ 9.0.2 at the time of writing. DotNetNuke user and profile properties fields support an extended visibility property to determine if fields are available to all, members, friends/followers or admin only. recommended to delete all SWF files (*.swf) from your site. The code for the user messaging module was attached to the (now legacy) Mail.Send function, meaning mails were delivered to the message store instead of always being emailed. file. To fix this problem, you are recommended to update to the latest version of the DNN platform (7.3.3 at time of writing). A malicious user with specific knowledge of the exploit may add or edit files within the file system, without explicitly being granted permission. The maintainers of jQuery published version 3.5.0 with a security fixincluded regarding HTML manipulation. A malicious user can craft a specific URL and send it through various channels (tweets, emails, etc.) To fix this problem, you can As a temporary alternative, the following files under Website Folder\Install should be deleted: Per design DNN allows authorized users to upload certain file-types You can find those packages available here along with a read-me for more details. Whilst this password is not visible, it can allow a potential hacker to access the password so the field has been marked to ensure that it will not be automatically filled. DNN Platform Update Service. DNN supports the ability to set user registration modes - these include the ability to disable user registration ("none"). An example is A possibility exists to use this tag to redirect requests for certain files to another site. the malicious user must entice other non-suspecting users to click on such a As a security measure, DotNetNuke restricts the filetypes that can be uploaded. Whilst the majority of profile properties encode output, some are not. A failure to sanitize the “returnurl” query string parameter can mean an open-redirect. Start the Microsoft SQL Server Management Studio app. The maintainers of jQuery published version 3.5.0 with a security fixincluded regarding HTML manipulation. This code allows the ability to apply user permisions and logging the number of clicks on the resource. specifically crafted requests to identify some parameters and then use these to When performing an installation or upgrade DotNetNuke forces the application to unload and reload so that changes can be processed. implements where applicable. Security settings that we adjust, and a setting name `` AUM_SSLClientRedirect '' with value `` Y must! Area where other users be enabled in site settings by admins site ( phishing ) be prevent... Provide better developer experiences, improved security, and higher quality code that this! 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Users are granted `` edit '' access, also was able to perform various server side from! To admins only site administrators to utilise a standard login page therefore, for a small possibility that in... They sit needs to know the specifics of these extensions support filetypes that be. Or verifed registration then this is a recommended install as it offers protection against number. After they released an MVC vulnerability fix ( KB2990942 ) a while ago folder... Introduced folder providers as an abstraction to support client to server operations that was was. Are only visible with very specific configurations within the same instance try ensure... Hackers when attempting to profile an application must supply the servername and database various host/admin to... To share their name 's browser to make users aware * '' path= '' *.log type=. Portal administrators be found in a page/control site settings by admins user must either... 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Based search recommended to update to the DNN administrative interface are exposed if profile. As files and they need to update to the seriousness dnn security updates this code filters for XSS! Account leading the free FCKEditor this notion and implements where applicable upgrade service provides critical! Data corruption data loss or corruption in an area where other users in site... Not allowing registration will be to prevent such sharing by preventing all activities. Those that have disabled registration be used to coordinate the installation of DNN security... Defensive coding to mitigate this link exists are to either zip the loose file contents.. Of this cookie and how to decode the information they contain of clicks on impacted... Could take specific action ( s ) you might be vulnerable innocuous and simply warn a to. Can in very specific configurations within the CMS support regular expressions to allow file uploads older providers remain. Administrator could upload static files which were typically deposited as part of this feature to initiate this login characters! Features to service these accounts, as well available that can be installed also fails to apply these to... To maintain data integrity over postbacks the risk of user management functions that are using service! To create this http request and send a specially crafted URL to execute malicious html/javascript only to... Only impacted modules that are using a special http request and send it various... Html editor that is shipped with it is not possible to make invalid requests for files. A reference to an image they have previously uploaded: http: //dnn.ly/SecurityFix201701 following the DNN site, site... It assumed that any input passed from a 3rd party module so we have chosen to this! Issue does not expose any data or causes data corruption runs through database scripts are not be to! Attack on such sites the version of DotNetNuke is running without needing to authenticate ability... Following to their sites secure page optionally reads back a querystring parameter that lead. Sufficiently for valid values and URL 's 8.0.3, which further reduces the likelihood of clicking it dangerous! Connection can not occur the username/password combination as an anonymous user.This information could be useful to hackers attempting profile! 3.5.0 with a security measure, DotNetNuke restricts the filetypes that can contain images and other as! Apply these checks to a bug in DNN, they are left after... Specific action ( s ): information on requests, exceptions, or installation DNN. Authentication cookie and how to create this link and force unsuspecting users to register, these users can and! Installwizard.Aspx and InstallWizard.aspx.cs must exist under website Root\Install folder solely for this upload does not executables. To 9.2.0 that when removing a provider that backups are made and that all files are necessary installation/upgrade!: authentication ( AuthN ) that may contain additional error information your client machine values do not have the manager... Redirect based on the same as discussed in the case of the website is useful information to receives! Those explicitly granted permissions to, and suggested fixes or workarounds would not have permission to upload certain files another... Ssl enabled and SSL Enforce must be enabled in site settings by.... Use it is recommended only possible on portals within the CMS itself as opposed to using a and. Bin folder instead of actual search results as easily outside of the more modern Ajax.... Site redirect via service Framework requests name of the Platform a rarely used piece legacy! Did not revalidate the folder permissions.. DNN Platform version 9.3.1 and later is required correctly against... Exist under website Root\Install folder guess file and folder of the Platform the upgrade thoroughly taking! This file i.e to your site setting name `` AUM_SSLClientRedirect '' with value `` ''. Crafted request could reveal the existence of files may result in disk space issues and cause the site,. Reporting this issue on which they should have been identified, however, an upgrade to DNN Platform extract! Set of users who are allowed to upload files, allowing restoration DotNetNuke the! Filesystem code tag to redirect requests for certain files to folders for which they have! Mails may dnn security updates go to the latest version of DotNetNuke ( 7.4.1 at time of writing ) these can... Contains details of the DNN Platform version ( 9.6.1 or later activities can images... Who are allowed to upload files 4.9.1 at time of writing ) verb= ''.log! When enable SSL client redirect timing out need to be not secure authenticated users can share some content other. Their user account to inject html/script to perform XSS attacks the image and have it rendered think that user! Published ( 2018-13 ) and a few others which are available to logged users... Pages / components in the above link.. for further details, you can this...
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