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specially crafted link or to visit a webpage that contains specially crafted DNN allows registered users to create content on site, where one create a links to other pages on the site. 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. A malicious user may use information provided by some installations to decipher or calculate certain key cryptographic information, this could allow further unintended access to be gained to the application. The user profile module supports templating so these properties are optional. An issue exists where a user with login details to a DotNetNuke site could add additional roles to their user account. of the Products – DNN Platform Version 9.2.2 or EVOQ 9.2.2 at the time of Only one specific cookie was found to be DotNetNuke contains core code (FileServerHandler) to manage items that can be linked to such as files and URL's. after login. HTML5 is cross-document messaging. 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. As new features are implemented, older providers may remain, even if not used. users must still have rights to upload a file, they can only change the intended folder. A number of older JavaScript libraries have been updated, closing multiple individual security notices. From time to time you may need to check out the current DNN version you are running as you do not want to miss out new features and security updates from latest DNN release. Some Web APIs can be If you are unable to upgrade to the latest version, you can rename or delete the following file from your installation: /Install/Install.aspx . upgrade to the latest versions of the Products - DNN Platform 9.1.1 or EVOQ the site (or even the machine hosting the site). The reporter has chosen not to share their name. A problem was identified where an Administrator could upload static files which could then be converted into dynamic scripts. Only one specific cookie was found to be All DNN sites running any version from 8.0.0 to 9.1.1. To fix this problem, you are recommended to update to the latest versions of the DNN (9.2.0 at the time of writing). Background affected. the log-in experience, where a user can be sent to a specific landing page The FileSystem API performs a verification check for "safe" file extensions. During usage of the DNN Framework, in a number of cases a redirect must occur after an action (such as working across portals). displayed. The malicious user must know the specifics of the SVG to initiate such attacks and must lure registered site users to visit the page displaying the uploaded SVF file. The install wizard has code which evaluates the database connection string and provides error details if a connection cannot be made. However, after being acquired by a private equity … Note regarding the Rad HTML Editor. DotNetNuke thanks the following for working with us to help protect users: When a user is logged in when they access user functions a unique id is used to ensure that these functions are performed for the correct user. Products - DNN Platform 9.0.1 or EVOQ 9.0.1 at the time of writing. Security. Analytics. Third-Party Component Integration - Core DNN integration. fix this problem, you are recommended to update to the latest versions of the Create a SQL database for your website. Some of these calls were be subject file path traversal. To support switching between languages via the Language skin object, the skin object renders the existing page path along with the relevant country flag and a language token. Whilst this parameter is typically encoded, an invalid tag could be used to bypass the filter, potentially to unencoded content being echoed to the screen and could allow for script or html injection issues. DNN sites are multi-tenant and can be used to serve multiple sites within the same instance. To fix this problem, you are recommended to update to the latest version of DotNetNuke (4.9.1 at time of writing). DNN thanks the following for identifying this issue and/or Whilst the search function filters for dangerous script , recently code was added to show the search terms and this failed to filter. are the same as discussed in the above link.. For further details, you can malicious user could take specific action(s) to allow malicious content to be HTML5 is cross-document messaging. In addition, the user would have to have permission to upload files. This only affects sites which display rich-text profile properties, and a few others which are available to privileged users only. Further information on phishing can be found here. A malicious user must Scott Bell, Security Consultant, Security-Assessment.com. A DNN installation must be configured in a specific manner and the malicious user would need specific knowledge to leverage the issue. displayed. To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.2.0 at time of writing). This exploit relies on SQL scripts being located in a specific default installation location for the DotNetNuke application. vulnerable. writing. other users and even upload malicious code to the server. 9.1.1 at the time of writing. malicious user could take specific action(s) to allow malicious content to be Anti-forgery token called RequestVerificationToken is used in DNN Web APIs to help prevent Cross-Site Request Forgery (CSRF) attacks. The excessive number of files may result in disk space issues and cause SVG image files can contain CSS and more importantly, JavaScript, Some DNN sites allow users to upload certain files to their sites. A sub-system of DNN, which is not very critical to the operation of DNN. The errorpage contains details of the current running version. . This is a bug fix release of the DNN.Events module. For users who haven't upgraded to DNN 7.4.1, it is recommended that you check for module updates on a regular basis, to … 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). If the site doesn't support public or verified registration the hacker cannot create a user to gain access to copy the data integrity values. To fix this problem, you can All DNN sites running any version prior to 9.2.0. A number of older JavaScript libraries have been updated, closing multiple individual security notices. know exactly which WEB API methods are subject to this vulnerability and must The DNN Framework contains code to support searching across a lucene based search. A malicious user may utilize a scripting process to exploit a file upload facility of a previously DNN distributed provider. Security Support for Retired Versions The malicious user must know how to utilize the exploit and The DNN Community would like to thank Sajjad Pourali for reporting this issue. upgrade to the latest versions of the Products - DNN Platform 9.1.1 or EVOQ Mitigating factors. To fix problem you can upgrade to the latest versions of the Products – DNN Platform Version 9.2.2 or EVOQ 9.2.2 at the time of writing. DNN sites allow a site administrator to specify a specific page which get displayed when a BAD REQUEST error occurs in a page/control. The Web APIs can Only a few Web APIs were either not have write permissions to it or else the file is set as "read only". DotNetNuke or DNN, a powerful, open source web content management system and web application framework, gained prominence in the early-to-mid 2000’s and was a primary resource used to develop over 800,000 websites and enterprise applications. A malicious user can send If you are unable to upgrade to the latest version, you can alternatively remove all of the *.txt files from the /Portals/_default folder. An additional side effect of this attack could cause the web.config file to update it's InstallDate value to a value different from the correct one. A potential hacker must have authorized accounts on 2 or more portals , and one of these must have additional security roles. 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. read this blog. Users can mitigate this vulnerability on all versions of DNN by reviewing and removing unused providers from the /Providers/ folder or via the Extensions section through the DNN UI. operations such as upload, delete, copy, etc. identifying this issue and/or working with us to help protect users: A malicious user can decode DNN contains a CMS To fix this problem you should upgrade to the latest versions of the Products - DNN Platform Version 9.3. or EVOQ 9.3.0 at the time of writing. The Security Task Force publishes security bulletins in the DNN blog, in forum posts, and sometimes by email. To resolve the following Telerik Component vulnerabilities: CVE-2017-11317, CVE-2017-11357, CVE-2014-2217, you will need to apply a patch that has been developed by DNN from their Critical Security Update - September2017 blog post.Customers may also want to keep utilizing their Telerik module in DNN 9 without being forced to upgrade the whole instance. Part of this code fails to sanitize against input and could allow a hacker to use a cross-site scripting attack to execute malicious html/javascript. not allow executables such as .exe, .aspx, etc. Mitigating factors 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). The uploaded file could be malicious in nature. A vulnerability allowed users to post some images on behalf of other users. This attack may lead to the disclosure of confidential data, denial of service, server side request forgery, port scanning from the perspective of the machine where the parser is located, and other system impacts. This functionality was removed, but the code to support anonymous vendors was not removed. The HTML/Text module is one of the core modules that is installed by default and provides an easy way to add custom html to a page. But if you have a third party MVC module(s) you might be When logged in, if the user attempts to access another users profile, they are correctly redirected to a failure page. It's possible to make invalid requests for the syndication handler that will consume resources searching for the relevant data before timing out. Since by default in most DotNetNuke portals, Anonymous Users have READ access to all folders beneath the "Portals" home directory, the incorrect logic flaw allowed a user to upload a file to any folder under this directory. Going forward, DNN plans to add more functionality to the security module, to better assist DNN users in keeping their sites secure. A failure to sanitize content used by the tabs control can mean a cross-site scripting (XSS) issue occurs. A logical error was introduced which meant that a user who had "edit" access, also was able to access module settings. Profile properties contain support for validating data passes a regular expression match. important to note that this vulnerability is limited to image files only. Ltd. Pune, India, Lance Cleghorn (Defense Media Activity Public Web). the permissions are based on the security role, so both roles must exist with the same details on both portals. coming from Microsoft. Some of these profile properties can be supplied during user registration, but all of them can be updated under the user’s profile area of DNN. The malicious user must the special request to use to initiate this login. Background To fix this problem, you should sites where a user is both admin and host user and no other users exist), then this is not an issue. Code has been added to ensure that only image types can be used. DNN’s Persona Bar, and other javascript based solution contained third-party libraries that have publicly shared security vulnerability information. know to craft such malicious links. 9.1.1 at the time of writing. 9.1.1 at the time of writing. These include both encoding and encrypting data to ensure it isn't tampered with. sites where single users administrate all the content are not affected. Fix(s) for issue There are other settings in this area that we adjust, and they're discussed below. A malicious user must The files InstallWizard.aspx and InstallWizard.aspx.cs must exist under Website Root\Install folder. Users must upgrade DNN Platform to version 9.5.0 or later to be protected from this issue. DNN 7.2.1 — Security Update This version of DNN was released only six weeks after 7.2, and includes "significant value in the areas of security, performance, and user experience." A failure to sanitize the “returnurl” query string parameter can mean an open-redirect. The telerik implementation of the editor will automatically remove javascript to try and ensure that cross-site scripting (XSS) cannot occur. The Security Task Force then issues a security bulletin via DNN security forum posts and, where judged necessary, email. The member directory fails to apply these checks to a number of fields. Whilst these files are necessary for installation/upgrade of DNN, they are left behind after the process finishes. For the 3.3.3/4.3.3 releases of DotNetNuke, the membership/roles/provider components were significantly overhauled to allow better granularity of control, and to allow us to make a number of enhancements. DNN Platform provides a number of methods to upload files, including zip files, allowing them to be extracted post upload. Since there is no way for an attacker to upload their own SQL scripts to this folder, the risk of arbitrary SQL script execution is not a factor. For versions older than 9.1.1, you can download To fix this problem, you are recommended to update to the latest versions of the DNN (9.2.0 at the time of writing). DNN supports the ability to set user registration modes - these include the ability to disable user registration ("none"). Due to a weakness is validating the parameter it is possible to load an existing ascx file directly rather than loading a skin file that then loads the control. Upgrading to DNN Platform version 9.6.0 or later is required to mitigate this issue. These operations are meant to 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. And of course, there is always the community, the forums, social media, etc. To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.4.0 at time of writing). A malicious user may create a link to a DNN site's page in a way that clicking the link will display a crafted message telling the user to take some action, such as calling a phone number or sending message to a specific email. Also, you can limit the number of users who are allowed to upload files to your site. To fix this problem, you are recommended to update to the latest version of DotNetNuke (4.8.3 at time of writing). A malicious user must N/A MVC vulnerability fix (KB2990942) a while ago. A malicious user must mysite.com/child) or else a "parent" (e.g. 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. As this can be used to create an XSS, and this XSS is then persistant, this issue has been elavated to a "medium" issue. DNN has an internal user-to-user messaging system that allows users to communicate, this is not used by all installations. a user account permission escalation. A malicious user with specific knowledge of the exploit may add or edit files within the file system, without explicitly being granted permission. DNN provides file-type restrictions which limit the ability for this to vulnerability to allow file uploads. DNN provides a user account mechanism that can be used to register users in the system. By default this module is only accessible to Admin or Host users. affected. Whilst installing DotNetNuke if an error occurs, as the custom error handling system may not be in place a redirect is performed to an error handling page. installed sites as of 9.1.0 will not have any SWF file included in them. distributions don't have any code utilizing the code that causes this To remediate this issue an upgrade to DNN Platform Version (9.6.1 or later) is required. contain. A cross-site scripting issue is an issue whereby a malicious user can execute client scripting on a remote server without having the proper access or permissions to do so. Security for any website is comprised of two major components: Authentication (AuthN). This attack can be made as anonymous user also. This could be used as the basis to gain unauthorised access to portal files or data. All other checks such as extension checking occur as expected, sites must have more than 1 language enabled, sites must be using core language skin object. To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.4.3 at time of writing). A site can configure these to ensure dangerous values do not slip through. If the validationkey value is not set to "F9D1A2D3E1D3E2F7B3D9F90FF3965ABDAC304902" then your portal does not suffer from this issue. The default html editor that is shipped with DotNetNuke uses the freetextbox component. Security Updates. A request could be crafted to that allows a user to confirm the existence of a file. A malicious user must know which API to utilize and send a specially crafted request to the site. know the specifics of these endpoints and how to decode the information they Under some circumstances it was possible to view the install wizard page, allowing potential hackers to view the portal number. content of their selection, without being authenticated to the website. 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 malicious can upload an SVG file which can contain some malicious code to steal some users’ sensitive data (cookies, etc.). In addition DotNetNuke contains a number of pieces of protection against cross-site scripting issues including the use of the HTTPOnly attribute which stops XSS code accessing users cookies. To fix this problem, you can This DNN security utility module is built to quickly address the needs of lockdown of the DNN /install/ folder and contents from locations that you may have limited access to as host or developer. This issue will only manifest under a reasonably rare set of permissions. Sites that have the viewstate encrypted are protected against accessing failed user uploads. All submitted information is viewed only by members of the DNN Security Task Force, and will not be discussed outside the Task Force without the permission of the person/company who reported the issue. The core already implements HttpOnly cookies to stop XSS attacks potentially stealing authentication cookies. (phishing). This means that a hacker could impersonate other users or perform an escalation attack by accessing a user such as the admin or host user. If a user re-registers with the same username/password combination as an existing account, they are undeleted. Mitigating factors. 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. Affected Version(s): Information on requests, exceptions, or other actions are Some Web APIs can be DNN thanks the following for identifying this issue and/or working with us to help protect users: ASP.Net recommends and provides Mitigating factors, A request could be crafted to this control to allow a user with only file permissions to upload a skin or container. 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. A failure to detect certain input as malicious could allow a hacker to use a cross-site scripting attack to execute html/javascript. MVC that comes in ASP.NET in 2016. Search the Root folder and subfolders of your site for any files with .aspx or .php extensions. 1. If you unable to upgrade to the latest version, you can rename or delete the following file from your installation: /Install/InstallWizard.aspx . Accept the defaults in Feature Selection, Instance Configuration, and Server Configuration. Most of the time parameters are used to determine which code to execute, but in a few cases, notably the error parameter, the content of the querystring is directly echoed to the screen. To fix this problem, you are recommended to update to the latest versions of the Products release 9.2.0. 9.1.1 at the time of writing. DotNetNuke has a search function which redirects to a custom results page. To fix this problem, you are recommended to update to the latest version of DotNetNuke (4.8.3 at time of writing). To keep customers safe, exact details of the vulnerability were not released but the IDs for the related NIST … 18 Jul 2019 — First technical report sent to DNN (security@dnnsoftware.com). DNN contains a CMS When entering data into the registration page, if a user uses a previously used username and a browser supports autoremember (and has it enabled) the associated password will be automatically filled. In cases where a site has a single user the issue obviously is non existant. special requests to utilize this vulnerability. [Messaging_Messages] where [FromUserID] in (select administratorid from portals), If you wish to review the set of messages first, a query similar to this will allow you to view the messages and determine which to delete, * FROM [dbo]. contain some old format SWF (Shockwave Flash) files included for demo purposes. upgrading to a newer version. Mitigating factors. to other windows. know the specifics of this cookie and how to decode it. DNN provides a number of methods that allow users to manipulate the file system as part of the content management system functionality that is provided. All DNN sites running any version from 9.0.0 to 9.1.1. This issue only affects sites where module permissions are more restrictive than the page permissions on which they sit. This issue was resolved in 5.0.1. If you see suspected issues/security scan results please report them by sending an email to: This attack occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. 5.1.20821.0. A malicious user may utilize a scripting process to exploit a file upload facility of a previously DNN distributed provider. It is a potential hacker must have access to a html module editor instance, a user must be using a browser that incorrectly implements the previously discussed behaviour, user must have module or page editor permissions, user must have access to the lists function - by default only admin and host users can access this module, user must have access to a member directory module, member directory module must be available to all (including anonymous) users, the site must allow users to post to other users journals. DNN thanks the following for working with us to help protect users: Page will redirect to http channel when enable SSL Client Redirect. An unauthenticated user in specific configurations could construct a payload that would result in a stored scrip being executed at a later time by a user with elevated permissions. These rich text editor controls typically leverage the DotNetNuke URLControl to provide a convenient method for selecting URLs, pages, and files for the portal. 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. Whilst the majority of profile properties encode output, some contain HTML and cannot do so. When users are attempting to access portal functions, we strive to strike a balance between providing informative messages, but not revealing unnecessary detail to people attempting to profile the application. There are two very specific security settings that we set immediately. know what kind of SWF files exist in a site and where they are in the site. This code allows the ability to apply user permisions and logging the number of clicks on the resource. It's not needed while using Trusted Connection. The users must be lured to click on such Installations configured using the ‘Secure’ folder type would not have the file contents disclosed. Attacker has to guess DNN’s internal Ids to upload files to Once module settings were accessed, the user could grant themselves additional granular permissions. As this causes the application to unload, a large number of similar requests could cause a denial of service attack(http://en.wikipedia.org/wiki/Denial-of-service_attack) which could lead to the application running slow or not responding to requests at all. For versions older than 9.1.1, you can download If your site contains a controlled set of users i.e. A potential hacker must have a valid, authorized user account on the DotNetNuke portal so that they can then attempt to access other users functions. To fix this problem, you are recommended to update to the latest versions of the Products - DNN Platform 9.0.1 or EVOQ 9.0.1 at the time of writing. DNN added support for If upgrading immediately is not an option then we recommend mitigating the problem using the steps DNN Corp published on their web site at the above link. 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. The current version of DNN as of this writing is 8.0.2, so we recommend upgrading to the latest version if possible, as the latest release contains additional security updates. Download the latest Security Analyzer tool here. June 9th, 2017 – Our team sends the “Critical Security Update” email to all customers that purchased any of the affected product(s) requesting them to immediately upgrade or apply the temporary fix. This echoes the page address with the different culture's available, but fails to remove any potential html/javascript injection. craft a special HTTP request that allows them to perform a WEB API call to To fix this problem, you are recommended to update to the latest version of DNN (7.4.2 at time of writing). 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. the Antiforgery checks may not be checked in Web API calls. 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. Since DotNetNuke 3.0 there has been a Skin Management option in the Admin interface. DNN products use role-based authorization to … Information Security Consultant Cengiz Han Sahin. As always, do not trust updates. A malicious user must know how to create this link and force unsuspecting users to click the link. The user needs to know the actions to reach the error page and must use the computer right after another users has logged out before the session expires. does not delete these files and they need to be deleted manually. In 6.0 DotNetNuke introduced folder providers as an abstraction to support alternative file stores, replacing the existing filesystem code. It was possible to amend the name/value pairs and inject html/script which could allow hackers to perform cross-site scripting attacks. Use our cloud hosting service for increased performance, security and reliability The malicious user must know the specifics of the SVG to initiate such attacks and must lure registered site users to visit the page displaying the uploaded SVF file. Check your web.config file. Using the DNN’s redirect It is possible to remotely force DotNetNuke to run through it's install wizard. User may think that the message is coming from the site itself, as opposed to the malicious user. These enhancements help to provide better developer experiences, improved security, and higher quality code that is easier to maintain. component that allows site managers to upload certain files to the site. In addition code exists to maintain data integrity over postbacks. us to help protect users: DNN provides a way for users to register in a site.

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