Return to previous page. Download DNN Platform. Evoq Customers. DNN Modules. DNN Themes. Store Blog. If no errors, proceed to the next step. If any errors are experienced, either resolve the errors contingent upon experience and skill level , or restore website from the backup created in Step 3. If any issues are experienced, either resolve the issues contingent upon experience and skill level , or restore website from the backup created in Step 3.
If the suggested upgrade path contains multiple upgrades, repeat Steps as necessary to get to the desired version of DNN Platform. Note Every upgrade scenario is unique in some shape, form or fashion.
The product is used to build professional looking and easy-to-use commercial websites, social intranets, community portals, or partner extranets. Containing dynamic content of all types, DNN sites are easy to deploy and update. The DNN Platform has been downloaded more than 8 million times and powers more than , websites globally. A community of more than 1 million members forms a powerful support network.
Thousands of free and commercial extensions, apps and skins are available at the DNN Store that make extending a DNN site fast and affordable. In addition to robust content management, the free, open source DNN Platform includes the following built-in features:.
We encourage everyone to contribute. All the details on contributing with Git and on our working methods can be found on the Contribute Page. In addition, since DNN is part of the. NET Foundation, we require our contributors to abide by their Code of Conduct rules and requirements also.
Pull requests are reviewed and accepted by the Approvers Group. Read more about the process and this group here: Approvers. This project is supported by the. NET Foundation. Skip to content.
Platform Public. It is important to note that this vulnerability is limited to image files only. Also, it does not allow unauthorized upload of new files. A malicious user must know how to create this HTTP request and send thousands of such requests. Alternatively, the malicious user must entice other non-suspecting users to click on such a link, which are generally deemed as phishing links by most email clients. Upon typing certain keywords to search for content in DNN, user may get an error page instead of actual search results.
This issue does not expose any data or causes data corruption. DNN has the ability to allow site administrators to update site's containers. Due to a bug in DNN, users with Edit permissions on a page can update container for all the pages in the site. User must have Edit permission on a page. To fix this problem, you are recommended to update to the latest versions of the Products - DNN Platform 8. DNN allows registered users to create content on site, where one create a links to other pages on the site.
A malicious user may create a link to the site's registration page in such a way, that clicking in a certain area on the page may let a user visit an external page. Malicious user should know how to create this link and place in an area where other users can see and click.
The exploit allows user to copy an existing image to anywhere on the server, provided the application is running with higher privilege and has access to files outside of the root of the DNN site. Many hosting providers do not provide this privilege to have DNN access to outside of it's folder. It is important to note that this exploit does not allow uploading, deletion or editing of files as such, simply copying from one place to the other.
Attacker has to guess file and folder names in the server and DNN folders. Whilst these files are necessary for installation of DNN, they were left behind after the process finishes.
Potential hackers can use a specially crafted URL to access the install wizard and under certain circumstances create an additional host user. As such these files need to be removed to protect against security profiling. The files InstallWizard. DNN does not allow executables such as. The exploit allows upload of files without logging-in into DNN. Optionally, the uploaded file can replace an existing file also. The file can be uploaded within the Portals folder only; it cannot be uploaded outside of this folder or any other place on the server.
Versions Affected. DNN Platform 8. Evoq 8. To fix this problem, you are recommended to update to the latest version of DNN 8. DNN thanks the following for working with us to help protect users:. A failure to sanitize Biography content can mean a cross-site scripting XSS issue occurs. Admins need to change setting to make the Biography public to everyone; by default it is visible to admins only. The RequestVerificationToken is not verified at all and all POST requests can go through even if that token is not present in the request header.
A failure to verify the anti-forgery token can mean a CSRF issue occurs. An attacker has to get a victim's browser to make a POST request to the server. DNN contains a tab's control that allows for content to be organised under clickable tabs. This approach is seen throughout the DNN administrative interface, and is intended to be used similarly in custom module development.
However, this pattern can also be used just as easily outside of an administrative experience. A failure to sanitize content used by the tabs control can mean a cross-site scripting XSS issue occurs. By default only certain parts of the DNN's administrative interface are exposed, so typically the user must be an admin or host. In certain cases, 3rd party modules may expose the tabs control so users would need access to pages that host that control to be explotied.
To fix this problem, you are recommended to update to the latest version of DNN 7. DNN supports the ability to set user registration modes - these include the ability to disable user registration "none". A failure to re-validate that site registration is set to "none" means that potential hackers can work around DNN's protection and register "spam" user accounts. A request could be crafted to that allows a user to confirm the existence of a file. The code has been updated to ensure only existence of image files in standard folders can be confirmed Mitigating factors.
Whilst installing DotNetNuke a number of files are used to coordinate the intallation or upgrade of a portal. Potential hackers can use these files to determine what version of DNN is running.
This information could help them to target versions with known security issues, anf therefore, need to be removed to protect against security profiling. The code that provides for this upload does not filter sufficiently for valid values. A carefully crafted request could reveal the existence of files that are not normally available via publically addressable URL's. To fix this problem, you are recommended to update to the latest version of DotNetNuke 7. Potential hackers can use a specially crafter URL to access the install wizard and under certain circumstances create an additional host user.
Mitigating factors The issue is in a rarely used piece of legacy code that ships with DNN. No usage of this was found in platform, or any of the modules shipped with it. However one usage was found in a 3rd party module so we have chosen to create this bulletin to make users aware. Fix s for issue To fix this problem, you are recommended to update to the latest version of the DNN platform 7. Acknowledgments DNN thanks the following for working with us to help protect users:.
The DNN Framework contains code to allow internal messaging of users. A flaw in this code meant that user permissions were not fully evaluated and could lead to users sending mails to more users than intended.
A number of users have reported that excessive and unexpected registration was happening on their sites, and then these new accounts were adding html links to other sites within their profiles.
The fixes cover three main areas:. Mitigating factors The potential hacker must have a valid, authorized user account on your site. They must also induce a different user to click on a URL that contains both the location of a trusted site and the malicious content. Mitigating factors The potential hacker must induce a user to click on a URL that contains both the location of a trusted site and the malicious content.
Background The DNN Framework contains code to support client to server operations that was added to the codebase before Microsoft Ajax was released.
Fix s for issue To fix this problem, you are recommended to update to the latest version of the DNN platform 6.
A particular piece of malformed HTML was not correctly detected by this code, and the potential for a persistent cross-site scripting XSS attack could occur. Mitigating factors The potential hacker must have an authorized user on the site.
Background During usage of the DNN Framework, in a number of cases a redirect must occur after an action such as working across portals. DNN has code to ensure that these redirects are always to valid locations and not to untrusted external locations. An issue was fixed where a particular URL could lead to a redirect to an external location -in security terms this is known as a "phishing" attack.
Mitigating factors The potential hacker must induce a user to click on a URL that contains both the location of a trusted site and a redirect to an untrusted site. DotNetNuke 7. The code that handles this supports selecting the folder but fails to revalidate these permissions. When running with multiple languages a flag selector is available. We were alerted that a particular tag could be added that would allow for a site redirect.
Whilst the W3C specification for this tag states that it will not work unless it is in the HEAD of the document, testing found that it does work within the BODY in a number of major browsers. Whilst not a DotNetNuke issue, we are electing to add an additional filter to protect users. The function creates a new file for any new profile image height and width - if sufficent requests are made a possibility exists that all available disk space could be consumed, leading to the website not performing as expected.
A possibility exists to use this tag to redirect requests for certain files to another site. Whilst this is not a DotNetNuke problem, we have elected to add defensive coding to mitigate this. To add or edit a module's title a user must have either page editor or module editor permissions.
To fix this problem, you are recommended to update to the latest version of DotNetNuke 6. The member directory fails to apply these checks to a number of fields. The function fails to validate for illegal values and can be abused to load invalid files. The database operation which fills the folder list failed to distinguish between "deny" and "allow" folders and could potentially reveal the names of folders the user did not have access to.
This issue only allows for the existence of a folder to be confirmed and does not allow the user to upload to that folder a further check is made before allowing write to the folder. In addition this only affects installations which use "deny" permissions at the folder level.
It is possible to use a specially crafted URL to directly load a module, and due to a flaw in the logic, at that time the module permissions are not correctly loaded, but instead the page permissions are applied. This issue only affects sites where module permissions are more restrictive than the page permissions on which they sit. This primarily affects sites where a page is visible to all, but individual modules are only visible to more restricted groups.
This XSS is not stored but rather reflected as part of the request - in addition DotNetNuke has a number of pieces of defensive code to protect against the targets of common XSS attacks.
The Journal module allows a user to post a link to an image they have previously uploaded. By intercepting and replacing the request, it is possible to add additional javascript to the image and have it rendered. The code has been updated to validate and remove such requests. However the check for file extensions was missed in one of functions, allowing users to rename files to extensions not allowed by the portal. 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.
Click here to read more details on the DotNetnuke Security Policy. It's possible for a potential hacker to craft a particular URL which would cause the javascript for the modal popup to be polluted with a cross-site scriping attack. To fix this problem, you are recommended to update to the 6. As a common page is used for both functions, the code checks for the users permissions and redirects approriately. 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.
They can then use these to create new users, delete users, and edit existing users and roles for those users. To fix this problem, you are recommended to update to the latest version of DotNetNuke 5. 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.
Code has been added to ensure that only image types can be used. This issue only allows for the existence of a file to be confirmed and does not allow the file to be read or altered.
As this page can be cached in a browsers temporary internet files, and the rendered password may have been close to the actual password e. If during initial installation the website does not have the correct filesystem permissions to install an exception is thrown.
This exception contained the path to help with diagnosing errors. Theoretically knowning the drive and folder of the website is useful information to a potential hacker so this has been removed. This issue is more theoretical than practical as even if the path details are viewed, the site has insufficent permissions for a hacker to access.
In addition the path is likely to be easily guessable e. The telerik implementation of the editor will automatically remove javascript to try and ensure that cross-site scripting XSS cannot occur. However it does not cover all XSS variants, so additional filters were added to catch these attempts. This issue would typically be rated as "low", but since version 5.
As this can be used to create an XSS, and this XSS is then persistant, this issue has been elavated to a "medium" issue. Some additional code was also added to encode additional fields in the message editor. Versions prior to 5. Sites can protect against this issue by removing the messaging 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.
The user must have a valid account, and must have been granted edit module permissions to at least 1 module. If the site owner had intended to block access to that user permanently they should use the "hard-delete" function or use the unauthorized checkbox, but in some cases sites may not be aware of the "soft-delete" function and this would allow unwanted users to recreate their account Mitigating factors.
DotNetNuke has a number of user management functions that are exposed both for users and administrators. Whilst there is code in place to validate the user roles and permissions to determine which functions are shown to users, it is possible to craft requests that bypass these protections and execute admin functions.
A request could be crafted to this control to allow a user with only file permissions to upload a skin or container. As both of these extensions support filetypes that can contain executable code, this would allow a user to upload dangerous 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.
A logical error was introduced which meant that a user who had "edit" access, also was able to access module settings. Once module settings were accessed, the user could grant themselves additional granular permissions. This only affects sites where users are granted "edit" permissions i. Please note that it will be automatically replaced in v10, so please test and plan accordingly. To help you try to identify if you have any other 3rd party extension that depends on Telerik, our very own mitchelsellers has published the Dnn Telerik Identitier module which you can download and install to try and list all assemblies that reference Telerik.
If you want in v9. Skip to content. Platform Public. Star Releases Tags. This commit was created on GitHub. Release Notes We'd like to first thank everyone from the community who has submitted pull requests or reported issues.
Noteworthy Changes in v9. Bug Fixes Fixed a serialization issue with authentication config Thanks bdukes Fixed an issue that prevented inserting links using the default HTML Editor Provider Thanks valadas Add back alternate views for core mail provider Thanks bdukes Fixed an issue where custom Analyzer types generate System. MissingMethodException Thanks berkarslan-xo Fixed an issue where it was impossible to edit html on child portals Thanks valadas Fixed an issue where the wrong RedirectAfter tabs were showing for localized sites.
Web on Microsoft. Compiled from 6. Recipe from 1. CakeUtils from 2. Json references Thanks valadas Bumped Fare from 2. FileSystemGlobbing Thanks valadas Bumped redux-devtools-dock-monitor from 1.
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