A number of these libraries have published their own security vulnerabilities such as XSS, DDoS and similar. The DNN Community would like to thank Sajjad Pourali for reporting this issue. typically do not see this issue as the site administrator will not authorize the spam accounts. As an alternative, deleting the install/installwizard.aspx and install/installwizard.aspx.cs files can be manually deleted. By default only certain parts of the DNN's administrative interface are exposed, so typically the user must be an admin or host. Mitigating factors, Versions prior to 5.5.0 do not have access to the messaging component, so hackers would need access (and edit permissions) to a html module to execute it. 1. There is also a patch available that can be installed also. The FileSystem API performs a verification check for "safe" file extensions. The upgrade process IIS website) to another instance, even on the same server. This process has a number of supporting features to service these accounts, as well as numerous methods to configure the site behavior. Code has been added to close this authentication blindspot. In order HTML5 is cross-document messaging. DNN Platform version 7.0.0 through 9.5.0. to other windows. A malicious users can in very specific cases upload images on behalf of a registered user. Liquid Content. To fix this problem, you are recommended to update to the latest version of DotNetNuke (5.4.0 at time of writing). This vulnerability is available when running the web site under .NET Framework 4.5.1 and earlier. Evoq Connectors. 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). BUG FIXES If a site does not have sufficent permissions to do an install/upgrade, then a HTTP 403 status is thrown and a custom permisions page is generated. craft a special HTTP request that allows them to perform a WEB API call to DotNetNuke contains core code (FileServerHandler) to manage items that can be linked to such as files and URL's. working with us to help protect users: One of the new features of The Skin Manager is primarily used to apply a new skin to a site; however, it can also be used by designers for development of new skins using the Parse capability. Users must upgrade DNN Platform to version 9.5.0 or later to be protected from this issue. This attack occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. As the base url is your site, then it could fool users into believing that the url has been approved by your site e.g. Alvaro Muñoz (@pwntester) and Oleksandr Mirosh from Hewlett-Packard Enterprise Security, To fix this problem, you can [email protected] Internet explorer prior to release 8 will not allow this tag in the BODY. 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. This code allows the ability to apply user permisions and logging the number of clicks on the resource. 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. To remediate this issue an upgrade to DNN Platform Version (9.4.1 or later) is required. To remediate this issue upgrading to DNN Platform version 9.3.1 and later is recommended. Overview. This issue is only apparent with specific configurations of DNN Installations and the information obtained would already be known by a malicious user as part of the act of discovery. This attack can be made as anonymous user also. Since DotNetNuke 3.0 there has been a Skin Management option in the Admin interface. Files which were typically deposited as part of this security exploit were named ISCN.txt and simply contained notice of credit for the attack. Resolving this issue will greatly reduce any spam registration. A failure to sanitize URL query string parameters can mean a cross-site scripting (XSS) issue occurs. This issue will only impact DNN based websites that were previously upgraded from version 7.x or earlier using older providers that are no longer supported. the one that comes with DNN 9.1.0 and add the necessary binding in the DNN thanks the following for Critical Security Update. An issue exists where a user with login details to a DotNetNuke site could add additional roles to their user account. does not delete these files and they need to be deleted manually. Potential hackers can use these files to determine what version of DotNetNuke is running. Profile properties contain support for validating data passes a regular expression match. There is also a patch available that can be installed also. without any authorization. to know the endpoints that may be vulnerable to this and they need to craft important to note that this vulnerability is limited to image files only. A failure to verify the anti-forgery token can mean a CSRF issue occurs. to spoofing, data theft, relay and other attacks. The malicious user must know how to utilize the exploit and DNN allows several file Note: Whilst not a mitigation, the identification of the operating system of a website is a trivial action with a number of websites/tools offering tools which probe and identify operating system's accurately. To fix this problem, you are recommended to update to the latest know the specifics of these endpoints and how to decode the information they DNN sites have the contain. The code that handles this supports selecting the folder but fails to revalidate these permissions. A malicious user can craft a specific URL and send it through various channels (tweets, emails, etc.) This is a bug fix release of the DNN.Events module. Once user clicks on such a link and arrives at such a DNN page, the user must further act willingly to the message displayed. A malicious user can send a crafted request to login to a DNN site which uses Active Directory module for users’ authentication and cause high CPU usage in the server which can lead to a Denial of Service (DOS) attack. Theoretically knowning the drive and folder of the website is useful information to a potential hacker so this has been removed. This only impacted modules that are using the WebAPI interface following the DNN Security protocols (which is a smaller subset of modules). DNN Platform version 5.0.0 through 9.5.0. To fix this problem, you can sub-system of DNN, which is not very critical to the operation of DNN. DNN has provided several 9.1.1 at the time of writing. Note regarding the Rad HTML Editor. other users and even upload malicious code to the server. A malicious user can send If using the CKEditor, no update necessary. You need to replace the assembly you have with this one and add 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. Users can share some content with other users in a DNN site and can include images in their posts. However, no information can be changed via this vulnerability. recommended to delete all SWF files (*.swf) from your site. This could allow a malicious user to execute Javascript or another client-side script on the impacted user's computer. The bulletin provides details about the issue, the DNN versions impacted, and suggested fixes or workarounds. Users can share some content with other users in a DNN site and can include images in their posts. The user messaging module is only available to logged in users. The Journal module allows a user to post a link to an image they have previously uploaded. To fix this problem, you can Moreover, the link will display an external image which is a nuisance rather than a real threat. coming from Microsoft. As the information is important it will still show if the versions differ, but if they are in sync which is the normal case, the version is not revealed. Security Alerts. The DNN Framework contains code to sanitize user input where html/javascript is not intended. accessed anonymously as well. This only affects sites which display rich-text profile properties, and a few others which are available to privileged users only. 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. not allow executables such as .exe, .aspx, etc. To fix this problem, you are recommended to update to the latest versions of the DNN (9.2.0 at the time of writing). 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. By default, DNN These rich text editor controls typically leverage the DotNetNuke URLControl to provide a convenient method for selecting URLs, pages, and files for the portal. As this can be used to create an XSS, and this XSS is then persistant, this issue has been elavated to a "medium" issue. Include any product updates. Mitigating factors Each confirmed issue is assigned a severity level (critical, moderate, or low) corresponding to its potential impact on the security of DNN installations. which cannot cause any major damage; it will be more of an annoyance. 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. a "denial of service" attack. 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 problem was identified where an Administrator could upload static files which could then be converted into dynamic scripts. We make every effort to ensure speedy analysis of reported issues and, where required, provide workarounds and updated application releases to fix them. this folder or any other place on the server. At present profile properties automatically strip dangerous XSS characters from data. This is a recommended install as it offers protection against a number of other non-DotNetNuke specific URL based issues. The maintainers of jQuery published version 3.5.0 with a security fixincluded regarding HTML manipulation. to users which will display external images as though they were coming from a DNN site. A few API calls were missing these validations. (phishing). To protect against attacks that attempt to use invalid URL's, users can install the free Microsoft URLScan utility(http://www.iis.net/expand/UrlScan). No member-only profile properties are exposed if all profile properties are set to member-only or admin. DNN thanks the following for identifying this issue and/or working with us to help protect users: ASP.Net recommends and provides DNN thanks the following for identifying this issue and/or The user profile module supports templating so these properties are optional. There is a small possibility that information in these files could prove useful to a potential hacker. Whilst this code filters for common XSS issues, a variant was found that could bypass the filter, so additional protection was added. us to help protect users: DNN provides a way for users to register in a site. User may think that the message is coming from the site itself, as opposed to the malicious user. The messages returned from the forgot password utility were too detailed, and could be used to identify the existance of user accounts. Antiforgery tokens feature to prevent tampering of web requests and preventing Therefore, for safety reasons you need to upgrade this assembly to A malicious user can send a crafted request to login to a DNN site which uses Active Directory module for users’ authentication and cause high CPU usage in the server which can lead to a Denial of Service (DOS) attack. It was possible to avoid the existing URL filtering code by using invalid URL's. If your portal does not use the text/html module you are not affected. However, the page title preserves the name of the originally requested page, which has been determined to be an unnecessary information leakage. A malicious user must know which API to utilize and send a specially crafted request to the site. A bug was fixed in the existing Captcha control that allowed a single cracked captcha to be reused for multiple user registration. The telerik implementation of the editor will automatically remove javascript to try and ensure that cross-site scripting (XSS) cannot occur. For versions older than 9.1.1, you can download Installations configured using the ‘Secure’ folder type would not have the file contents disclosed. It's possible to make invalid requests for the syndication handler that will consume resources searching for the relevant data before timing out. Third-Party Component Integration - Core DNN integration. Mitigating factors. A potential hacker must have authorized accounts on 2 or more portals , and one of these must have additional security roles. 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. These APIs have the abilities to make very minor system settings updates, HTML5 is cross-document messaging. 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. Mitigating factors, To fix this problem, you are recommended to update to the latest version of DotNetNuke (6.2.5 at time of writing). 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. 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. This value is an implicitly trusted URL, so it is possible for a hacker to publish a url to your site that already contains this querystring parameter. Using the DNN’s redirect The potential hacker must have an authorized user on the site. DNN Platform & Security Notices. SSL Enabled and SSL Enforce must be enabled in Site Settings by admins. As new features are implemented, older providers may remain, even if not used. The code has been refactored to filter the input to ensure that cross-site scripting attacks cannot occur. The errorpage contains details of the current running version. file. The “Onclick” trigger and the “prompt” command are not filtered properly and JavaScript gets executed. Finally, you have to enter the connection string for updates in the web.config file. A failure to sanitize the “returnurl” query string parameter can mean an open-redirect or cross-site scripting (XSS) issue occurs. Be confirmed and does not cover all XSS variants, so that advertisers could be accessed without any.. Validating data passes a regular schedule, and they could be added that would for. Through it 's not a DotNetNuke issue, we are electing to add additional to! Expose any data or causes data corruption be removed to protect against profiling. 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