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    • 30585
    • 833 Posts
    Hi all,

    One of the sites I'm managing has been compromised. All links on the site are prefixed with random subdomains that do not exist on the server.

    Here's an example of a compromised link :

    Instead of this:
    http://www.mysite.com/mylink.html

    The link is changed to this:
    http://www.georgia-drivingrecord.com2912.mysite.com/mylink.html

    or this:
    http://www.asseenontvpromo.com2593.mysite.com/mylink.html


    These prefixes seem to be generated randomly. But when viewing the source code, all links are correct. The prefix isn't there anymore. It's only affecting the browse mode.

    A few things I should mention:

    This site has recently been ported to Media Temple from another hosting company.
    This issue never occurred with the previous host.
    The site's forms (which I suspect have been used for the hack) use Mandrill SMTP for mail delivery.
    The site's forms are now secured with Recaptcha
    The content of the .htaccess file as well as index.php file haven't been tampered
    The hosting company checked their system and couldn't see anything abnormal.
    This issue is intermittent. Taking the site offline and republishing it seems to be a fixing it temporarily.
    The site uses the Login snippet to protect some private pages (used by the front desk to process estimate forms).
    This issue is not browser-specific. It was confirmed with Chrome/FF/Safari all latest builds
    This issue was confirmed by users at different geographic locations including the hosting company

    The environment:
    MODX 2.3.2 / PHP 5.2.8 / MYSQL 5.1.72

    Any help would be greatly appreciated!
      A MODx Fanatic
      • 3749
      • 24,544 Posts
      See if you have any new users in the users table.

      What code is processing the forms? Recaptcha won't help you if the $_POST values are not properly sanitized. A hacker can still use the form as an entry point, the Recaptcha will just slow them down for a few seconds.
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        • 30585
        • 833 Posts
        Hi Bob,

        Thanks for the follow-up. I just checked, there are no new users in the users table. Those forms are using Formit custom hooks to save form data to a custom table before sending reports. I'm afraid that the values are not properly sanitized. If you don't mind, I'm going to PM you the code to a snippet used on one of the forms. Maybe you'll see what I can't.
          A MODx Fanatic
          • 28042 ☆ A M B ☆
          • 24,524 Posts
          If the page source shows the URLs as normal, then I'd suspect some javascript embedded in the page to modify the links.
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            • 30585
            • 833 Posts
            I also suspect that a client-side script could be doing this. But I can't see any suspicious script

            Other than JQuery and Google Maps Api (loaded from Google CDN), these are the only scripts used on those pages:

            all.js
            /*BOOTSTRAP*
            /*!
             * Bootstrap v3.1.1 (http://getbootstrap.com)
             * Copyright 2011-2014 Twitter, Inc.
             * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
             */
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            /*GEOCOMPLETE*/
            /**
             * jQuery Geocoding and Places Autocomplete Plugin - V 1.5.0
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             * @author Martin Kleppe <[email protected]>, 2012
             * @author Ubilabs http://ubilabs.net, 2012
             * @license MIT License <http://www.opensource.org/licenses/mit-license.php>
             */
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            [ed. note: treigh last edited this post 11 years, 8 months ago.]
              A MODx Fanatic
              • 28042 ☆ A M B ☆
              • 24,524 Posts
              Is there a live link to the site? I'd like to examine that in Firebug.

                Studying MODX in the desert - http://sottwell.com
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                • 3749
                • 24,544 Posts
                If it happens in multiple browsers, I think it's unlikely that it's a client-size script.

                As I said, see if there are any unrecognized users on the site.
                Also, see if there are any plugins you didn't create.
                You might also take a look at the makeUrl() functions in these files:

                core\model\modx\modcontext.class.php
                core\model\modx\modrequest.class.php
                core\model\modx\modx.class.php
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                  • 30585
                  • 833 Posts
                  Thanks for the follow-up Susan. I've PM'd you the link to the site. I've just reinstalled MODX. Updated user's passwords including mine, blocked all users except myself and disabled all front-end forms except the contact and estimate request form.

                  The site appears to be back to normal for now at least.

                  Thanks for your help.

                  EDIT: @BobRay thanks for the tips. I'm working on it. I'll report back.
                    A MODx Fanatic
                    • 30585
                    • 833 Posts
                    @BobRay, as I've just reinstalled MODX via SSH, those files in the core/model/modx folder have been updated. I've checked them as you suggested, but nothing seems odd.

                    The users table currently has 4 verified users. All except one are blocked for now and all have been updated with passwords. There's only one custom plugin that I installed and it seems ok. The other plugins came with major extras (Collections,MIGX,Ace,Redactor,SimpleSearch,MobileDectection).

                    Prior to reinstalling MODX, I uninstalled and removed Login and Formit. I reinstalled them after the upgrade. I also unpublished all form pages except two: the contact page (which doesn't interact with the database) and the estimate request page, of which I PM'd the snippet code.

                    For now the site is behaving, but as I still don't know what's causing this.
                      A MODx Fanatic
                      • 3749
                      • 24,544 Posts
                      If you haven't already, you should also change all your passwords and usernames for MODX, cPanel, FTP, phpMyAdmin, and shell access if you have it.
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                        MODX info for everyone: http://bobsguides.com/modx.html
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