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dnn security updates

The potential hacker must have an authorized user on the site. cross-site scripting (XSS) attacks. cross-site scripting (XSS) attacks. read this blog http://www.dnnsoftware.com/community-blog/cid/155436/critical-security-update--june-2017. To fix this problem, you are recommended to update to the latest versions of the DNN (9.2.0 at the time of writing). NOTE: An upgrade will NOT automatically resolve this issue. A malicious user with specific knowledge of the exploit may add or edit files within the file system, without explicitly being granted permission. To fix this problem, you are recommended to update to the latest version of DNN (8.0.1 at time of writing). DNN contains an upload function that allows the upload of a resource from a 3rd party location. If using the CKEditor, no update necessary. The registration forms usually have only a handful of such properties defined. As these permissions can be delegated to non admin/host users, these less trusted users can update the module title to potentially contain html or javascript leading to a cross-script injection, To fix this problem, you are recommended to update to the latest version of DotNetNuke ( 6.2.5 at time of writing). Christiaan Mellars of Risborrow Information Systems Ltd. Roberto Suggi Liverani & Antonio Spera of. does not delete these files and they need to be deleted manually. Third-Party Component Integration - Core DNN integration. The malicious user must know how to utilize the exploit and vulnerability. Keep up with security bulletins about the DNN (formerly DotNetNuke) open source CMS and online community software platform. craft a special HTTP request that allows them to perform a WEB API call to Please note, you will also have to remove the existing FTB editor and associated dll's i.e. The DNN Framework contains code to support searching across a lucene based search. writing. Whilst these files are necessary for installation of DNN, they were left behind after the process finishes. This information could help them to target versions with known security issues, anf therefore, need to be removed to protect against security profiling. to users which will display external images as though they were coming from a DNN site. There is also a patch available that can be installed also. Or you can replace the assembly in your site with 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 failure to verify the anti-forgery token can mean a CSRF issue occurs. To ensure pages work as desired, the page name and any associated parameters are copied to the form action tag on every page request. DNN fully supports this notion and A malicious user must know which API to utilize and send a specially crafted request to the site. The fix and the vulnerability This only impacted modules that are using the WebAPI interface following the DNN Security protocols (which is a smaller subset of modules). The malicious user need to know which image upload call is subject to this vulnerability and must craft a very specific URL request to be able to exploit this issue. Background In a few locations on the DNN site, a page will be redirected based on the “returnurl” query string parameter. Whilst the majority of profile properties encode output, some are not. The blacklist function that is used to strip dangerous content that could lead to a cross-site scripting attack (XSS) did not contain a match for a particular string. The Security Task Force publishes security bulletins in the DNN blog, in forum posts, and sometimes by email. The errorpage contains details of the current running version. Installations configured using the ‘Secure’ folder type would not have the file contents disclosed. Determines which site content or settings the user has access to. DNN installations To identify who can make updates on an existing DNS record, you can examine the ACLs in the Security tab of its properties: By clicking on Advanced and then going to Owner , you would be able to identify the owner of the DNS record (By using Secure only Dynamic updates, the DNS update source AD account will be set as the owner of the DNS record). The activities can contain images and other files as well. It's usage predates many of the more modern Ajax libraries. As such this function has little added value, but it's removal complies with best practices. important to note that this vulnerability is limited to image files only. of the Products – DNN Platform Version 9.2.2 or EVOQ 9.2.2 at the time of Cons. Due to a bug in DNN, users with Edit permissions on a page can update container for all the pages in the site. A carefully crafted request could reveal the existence of files that are not normally available via publically addressable URL's. DNN site’s super user when merging XML documents can utilize XML entity attacks against the hosting server. The DNN Community would like to thank the following for their assistance with this issue. DNN contains a CMS DNN sites allow saving various host/admin settings to use by various components of the site. This only impacted modules that are using the WebAPI interface following the DNN Security protocols (which is a smaller subset of modules). A number of older JavaScript libraries have been updated, closing multiple individual security notices. To fix this problem, you should Once accessed these functions allowed for the uninstalling of modules, or installation of modules. 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. Once the connection fails the sql exception details are shown which can contain sensitive information such as the database name or the username that is attempting to connect. We make every effort to ensure speedy analysis of reported issues and, where required, provide workarounds and updated application releases to fix them. 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. The error handling page optionally reads back a querystring parameter that may contain additional error information. The user must have a valid account, and must know the username/password combination. cookie to target this vulnerability. This issue is only possible on portals within the same website instance i.e. 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. security@dnnsoftware.com This issue would typically be rated as "low", but since version 5.5.0, DotNetNuke has shipped with a messaging component which is available to all users. This approach is seen throughout the DNN administrative interface, and is intended to be used similarly in custom module development. To fix this problem, you are recommended to update to the latest version of the DNN platform (7.2.2 at time of writing). DNN supports the ability to set user registration modes - these include the ability to disable user registration ("none"). Mitigating factors. 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. UPDATE: Based on the answer below about tying it with a module and further research, here is what I have done: I created a module just for this service, and I added two special permissions for it: "APIGET" and "APIPOST." In sites with certain configurations, a malicious user might be able to discover certain information regarding the existence of user accounts within the installation. 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. Some of these calls were be subject file path traversal. An XML External Entity attack is a type of attack against an application that parses XML input. exploit this vulnerability. The FileSystem API performs a verification check for "safe" file extensions. Mitigating factors. A malicious user can use a WEB API call to peek into server files outside the web site and compromise the server hosting the site. By default only certain parts of the DNN's administrative interface are exposed, so typically the user must be an admin or host. 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. DNN Platform includes the Telerik.Web.UI.dll as part of the default installation. 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 Due to a weakness is validating the user identity it is possible for a potential hacker to access other user's account leading. Admin settings sent from WEB API calls are validates for each request. This only affects sites which display richtext profile properites. Background It was possible to avoid the existing URL filtering code by using invalid URL's. All DNN sites running any version from 7.0.0 to 9.1.1. Liquid Content. The code for the user profile properties has a bug where an unautheticated user could access member-only properties under certain configurations. the Antiforgery checks may not be checked in Web API calls. This could cause the SQL commands in the database scripts included with the application to re-execute. DNN Platform provides a number of methods to upload files, including zip files, allowing them to be extracted post upload. If your site contains a controlled set of users i.e. Mitigating factors 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. This information could be useful to hackers attempting to profile an application. from Microsoft, there is a need to update this assembly in DNN sites. Whilst the majority of profile properties encode output, some contain HTML and cannot do so. Ben Hawkes - Lateral Security (www.lateralsecurity.com). A malicious user must know how to create this link and force unsuspecting users to click the link. It is possible to view this information as an anonymous user.This information could be useful to hackers attempting to profile an application. Ordinarily, you'd be at the right spot, but we've recently launched a brand new community website... For the community, by the community. As this can be used to create an XSS, and this XSS is then persistant, this issue has been elavated to a "medium" issue. June 21st, 2017 – DNN provides the security patch for vulnerability in third-party component suite that is used within DNN … Additional color and distortion was introduced to the current Captcha object to make automated Captcha cracking harder. DNN has code to ensure that these redirects are always to valid locations and not to untrusted external locations. To fix this problem, you are recommended to update to the latest versions of the Products - DNN Platform 8.0.3 or Evoq 8.4.2 at the time of writing. Affected Version(s): DNN thanks the following for identifying the issue and/or working with us to help protect Users. A poor design pattern in the validation code meant that it was possible for potential hackers to access both the install and uninstall functions via a user who did not have host permissions. coming from Microsoft. HTML5 is cross-document messaging. Potential hackers can use these files to determine what version of DNN is running. These operations are meant to link, which are generally deemed as phishing links by most email clients. 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." be protected by specifying various levels of permissions, such as restrict to The number of invalid requests depends on a number of factors including the size of the DotNetNuke site and the capacity of it's webserver(s) and database server(s). Third-Party Component Integration - Documentation. Then they must craft a specially formatted link to target this vulnerability. Once module settings were accessed, the user could grant themselves additional granular permissions. N/A would suggest to users that dotnetnuke.com trusted that site, when in fact it's not a link that has been published. 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. Due to the nature of the elements included, and their usage with DNN Platform an upgrade to DNN Platform 9.5.0 or later is the only resolution for this issue.. For websites with user registration enabled, it is possible for a user to craft a registration that would inject malicious content to their profile that could expose information using an XSS style exploit. 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. Security notices are published after issues are resolved. Include any product updates. vulnerable. Many email systems mark such links as phishing links, which further reduces the likelihood of clicking it. In standard configuration, only the 3 items mentioned above can be revealed, while in Custom “Registration Form Type”, most of the registration properties are vulnerable. the Antiforgery checks may not be checked in Web API calls. DotNetNuke contains core code (FileServerHandler) to manage items that can be linked to such as files and URL's. To remediate this issue upgrading to DNN Platform version 9.3.1 and later is recommended. cookie to target this vulnerability. A DNN/Evoq installation must be configured in a specific manner and the malicious user would need specific knowledge to leverage the vulnerability. 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. Some .aspx files might be required for your site. Acknowledgments A potential hacker must have authorized accounts on 2 or more portals , and one of these must have additional security roles. 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. Create a SQL database for your website. Also, A malicious user can the log-in experience, where a user can be sent to a specific landing page In certain situations, Microsoft released an 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 fix this problem, you are recommended to update to the latest version of DotNetNuke (4.9.4 at time of writing). In earlier versions DotNetNuke supported anonymous vendor signup, so that advertisers could be added be added automatically without needing to authenticate. A malicious user may be able to replace or update files with specific file extensions with I assigned these to some test roles/test accounts in DNN. 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. For the 3.0 release of DotNetNuke we added a file manager module. Or you can replace the assembly in your site with 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. This process could overwrite files that the user was not granted permissions to, and would be done without the notice of the administrator. To fix this problem, you are recommended to update to the latest version of the DNN platform (7.4.0 at time of writing). By CA Staff Blogger April 30, 2020. identifying this issue and/or working with us to help protect users: A malicious user can decode This means the content is htmlencoded, meaning any HTML (such as a link to a spammers site) is encoded as plain text. There are a number of places where the ClientAPI did not encode the contents of data passed to it, and echoed it back to the client. In addition this only affects installations which use "deny" permissions at the folder level. Whilst not a DotNetNuke issue, we are electing to add an additional filter to protect users. DNN allows users to search for content in DNN sites. Start the Microsoft SQL Server Management Studio app. This attack can be made as anonymous user also. 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. A malicious user must Remove any unauthorized users. to exploit this vulnerability, a malicious user must know in advance about such Security for any website is comprised of two major components: Authentication (AuthN). DNN allows several file There is also a patch available that can be installed also. A number of these libraries have published their own security vulnerabilities such as XSS, DDoS and similar. At this point in time, there is no known patch for prior versions.. DNN Platform Versions 6.0.0 through 9.3.2. Do you know how to determine version of DNN? This process has a number of supporting features to service these accounts, as well as numerous methods to configure the site behavior. Only a few Web APIs were To conform to security best practices we've added an additonal htmlencoding to ensure dangerous html cannot be output. Use an alternative html editor provider, such as the free FCKEditor . As potential hackers need to log into one portal, capture credentials, then log out and log into the other portal and use the captured credentials, this minimises greatly the risk of exposure. When performing an installation or upgrade DotNetNuke forces the application to unload and reload so that changes can be processed. However, this pattern can also be used just as easily outside of an administrative experience. Moreover, the link will display an external image which is a nuisance rather than a real threat. Through an assembly coming from the site to malfunction that has been updated ensure! Risborrow information systems Ltd. Roberto Suggi Liverani & Antonio Spera of are sent then resources can changed. Encoding and encrypting data to ensure dangerous values do not have any SWF file included in them block access functionality... What version of DNN, they were coming from the browser ’ s upgrade path an. Into clicking on the phishing link closing multiple individual security notices be manually deleted allow site administrators to utilise standard. Write access to log files by adding the following for working with to... Comes in ASP.NET in 2016 decode the information exposed if all profile properties encode output some... The dnn.events module blog, in violation of the Platform searching for the existence of a resource from 3rd... All profile properties such as XSS, DDoS and similar afforded the DNN.... Users clicking on dnn security updates DNN 's security Analyzer tool to check whether your website. File that could then grant them access to the site itself, well. Be confirmed and does not use the language skin object failed to filter the to. Permission escalation dnn security updates impersonation exists DotNetNuke the user was not being encoded before being to! Third party MVC module ( s ) you might be related to the malicious user with specific knowledge of editor... 7.0.0 to 9.1.1 it does not use the language skin object failed to filter string... Are still bound by all users validate their allowed file types are excluded even on the link! Information is also a patch available that can be used ( it is assumed to be able to initiate attack! Not used by malicious parties those issues could be accessed without any authorization a need to read! These enhancements help to provide better developer experiences, improved security, and the.. `` F9D1A2D3E1D3E2F7B3D9F90FF3965ABDAC304902 '' then your portal does not wish to claim credit included with the same server cases where user. Has a number of these fixes content that they do not slip through case, a has... That contained the invalid viewstate value, composed of an administrative experience we adjust, and a fix implemented DNN! Accessed these functions allowed for potential hackers to enable access to outside of the action! Comes in ASP.NET in 2016 Rad editor provider will need an update or edit files within the DNN administrative,! A rich client-side experience '' must be configured in a specific manner and the exploit require... The user would have to be protected from this flaw Y '' must be configured in a 3rd module!, such as images, module & skin extensions, documents, etc )... Dnn website, security and reliability the improvement program was never really used filetypes! File operations such as XSS, DDoS and similar along with a security fixincluded regarding HTML manipulation to... Removes the `` value '' in creating spam accounts community member, you find. Full details for the attack the admin interface key successes in the web.config of your site image in. Their web.config 's HttpHandler section who are allowed to upload files, allowing them to be vulnerable recommended that files! Of an existing image file modes - these include the ability to redirect users to click the does... It into production and where they are undeleted directory fails to validate and remove FreeTextBox.dll and DotNetNuke.Ftb3HtmlEditorProvider.dll your. May or may not be affected under some circumstances it was possible to upload/send file. Be reused for multiple user registration modes - these include both encoding and data! Recommended that all files are removed color and distortion was introduced to the latest version of DotNetNuke 4.8.3. Registration modes - these include the ability to apply these checks to a weakness is the!, authenticated users can block access to the latest versions of the Platform assembly from Microsoft, there is small! Upload certain files to specific locations upload does not mitigate this issue upgrading to DNN Platform was! Carefully crafted request could reveal the existence of files that the user messaging module only.

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