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Growing Member





    We discovered a very scary situation where anyone with a URL to any resource under the DNN folders can access that resource even if they do not have a login. My DNN version is 8.0.3

    Any help is greatly appreciated.

    Mike






    Growing Member





      Is the file in a folder created under "secure/filesystem" ?
      See https://www.dnnsoftware.c...der-file-permissions





      Veteran Member





        Mike,

        to be more specific: a folder in DNN can have 3 types: "Standard", "Secure" and "Database" (just to mention, there are others as well if you are using a cloud connector, but I assume that the folders are created inside the web structure under /Portals/x/...).

        When you create a folder of the type "Standard", the files you put in have a URL like https://www.mysite.com/Po...Documents/Myfile.pdf - and if someone accesses this Url, IIS delivers the file and DNN is not involved in that process.

        When you have files that have to be secured, you need one of the two other options. "Secure" means, the file is renamed from "Myfile.pdf" to "Myfile.pdf.resources" (you see this in Windows Explorer), and as .resources is listed as denied in the Request Filtering of IIS, the file is not delivered by IIS if you access the Url https://www.mysite.com/Po...Myfile.pdf.resources. The Urls looks something like https://www.mysite.com/Li...0&language=en-US - and this is handled by DNN checking the folder permissions, so if the folder permissions are restricted for some role(s)/user(s) - and not "Everyone", a login is necessary.

        More or less the same is valid for the "Database" type, the difference is that you don't see the file in the folder structure (in Windows Explorer, you only see the folder, but it seems to be empty), as it is saved in the DNN database. This could blow up your database, so don't use if if you have the size restricted by your hosting provider. 

        In short: If you want to restrict access to a file to specific roles and/or users, you have to use the Secure or Database type.

        Unfortunately, you can't change the folder type of an existing folder. You have to create a new (secure) folder and move the files there.

        Happy DNNing!
        Michael 

        Michael Tobisch
        DNN★MVP

        dnnWerk Austria
        DNN Connect





        Veteran Member





          That is how the default works: you put a file on a location on your server. If someone knows the location, they can see/download the file. Pretty much FTP-like.

          As James mentioned, if you need more security, use the folder options

          Tjep's digital agencyRegards,
          Tycho de Waard

          Tjep's digital agency
          We just love DNN
          https://www.tjeps.com





          Veteran Member





            Another thing to mention is that DNN 8.0.3 is quite old and has some security issues. You should upgrade to the latest version as soon as possible.

            Happy DNNing!
            Michael

            Michael Tobisch
            DNN★MVP

            dnnWerk Austria
            DNN Connect





            Growing Member





              Michael,
              When you say "You have to create a new (secure) folder and move the files there." Can I move the files through the file system such as windows explorer or do I need to upload them all through the DNN UI??

              Thanks again for all the help. Much appreciated.

              Mike






              Veteran Member





                Mike,

                you can move the files using Digital Assets Manager (the File Manager in DNN), or with the new Resource Manager (which is available in DNN 9.8+). Don't do it using Windows Explorer. And check if the links to the files are still valid after moving the files (propably not).

                Happy DNNing!
                Michael

                Michael Tobisch
                DNN★MVP

                dnnWerk Austria
                DNN Connect





                New Around Here





                  Is there a way of creating secure folders using IIS authorization instead? We discovered that our secure folders that we made secure through IIS in 2018 are no longer secure, now it is 2022. This worked for us in the past but we discovered recently that our "secure" or restricted files are now visible to a user that doesn't require a login. We would prefer not to use the DNN secure folder. Some of our staff members do not like the LinkClick.aspx handler. We have a private site that has two layers of security. Thanks.





                  New Around Here





                    Hi again,

                    Let me add... an unauthorized user can access a URL, the same as the original person who posted the question.






                    Veteran Member





                      Please contact [email protected] for security issues.
                      Tjep's digital agencyRegards,
                      Tycho de Waard

                      Tjep's digital agency
                      We just love DNN
                      https://www.tjeps.com
                      You are not authorized to post a reply.
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