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scott001

XSS/Code Injection Issues

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I am running the latest version of Revive Adserver and am experiencing what I believe to be XSS code injection issues. I believe there could be a vulnerability/exploit out there. I've been running PHPAdsNew/OpenX/Revive for over 10 years and haven't had this happen before.

I've checked for extra admin accounts and there are none, I changed my passwords, etc., but basically any ads I display cause a malware pop-up that you can't close followed by virus warnings. Also, I found files that were likely injected into my images folder...the contents were php but coded so they could not be read:

  • ef245a0187359c78f346589bb7628562.php
  • 45a0187359c78f346589bb7628562.php

Any ideas out there on how to deal with it? I could use some help! Thank you!

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If you haven't already, move the current revive webroot somewhere else for later review.

Do a clean install of revive. Move only your image files to new install and copy your config over after manually reviewing it.

Review the append and prepend fields in _banners and _zones tables. Look especially for <script> and <iframe> tags that should not be there.

This may help you find the file that was compromised.

grep -rIP '(eval|exec|system|passthru)\(' /path/to/revive-install | grep -P '\$_(REQ|GET|POS)'

Reset passwords and review rest of server. Through the files you found other areas may be infected.

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Thank you for this! I will report what I find here. So that grep command did not work because the files I found are somehow encrypted. For example, here is a small part of it: 

<?php $ijdskjfk["&@#13^3^4^%&3$*136223%(&3&%3%14**2&@$#&*6^#^^$&1(_22%!^=@%^+#@^&##@3##333#2$^3-3&$$3(323^^2&3)15&&5$57*)%)^53%&2#226&^%%%1##4^-^=4&43&^@#4=^%-3*3"]="\x32@\x25%\x25@\x5e%\x35^\x5e5\x32)\x25+\x3f5\x325\x34*\x31*\x5e1\x32&$


 

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So I disinfected my site...these two files, according to Comodo, were back door scripts. Both were in my site's /www/images directory, so everyone may want to check their installation as well. The most disturbing thing is that one had the same date/time stamp on it as the Revive Adserver files 5/24/18 @ 3:49 AM. Is it possible that hackers somehow added this file to Revive's installation zip file before I downloaded it? I am just speculating here, but I am not sure how else that file could have the same date/time stamp as my other files.

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One of the Ad Networks that I used to serve ads from is called District M. Through them, unfortunately, I was also serving ads that contained horrible pop up malware...the type of ad pop up that you can't close or use the back button on--Usually claiming that you won a prize or that your device is infected and you simply need to download their "fix" to resolve it. I am wondering if it is possible that this type of malware could have also been the source of the 2 backdoor files? Could this malware also have utilized a Revive Adserver exploit to get the two files onto my site? 

I am surprised that more Revive folks have not responded here, as I do believe that there should be more concern about whatever exploit is being used to infect Revive installations. I've been using this software for over 10 years since it was called PHPAdsNew, and have never had such issues before.

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 This Topic is very important!

It seems to me that I protected my server by disable writing to the images directory.

I have a php script that injected into the images directory, like as ef245a0187359c78f346589bb7628562.php

I was unable to create a report on hackerone.com

Please take action!

 

Edited by Oleg Rumjancev
add link to the exploit script

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Hello,

Unfortunately, we had the same issue with our ad server today.
Digging through log files I found some activities related with ef245a0187359c78f346589bb7628562.php and 45a0187359c78f346589bb7628562.php.

Please check: http://ads.kajgana.com/access-log.html

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Hi @scott001, @Oleg Rumjancev, @Dejan & other interested parties!

Thank you very much for your posts above. Obviously, we want Revive Adserver to be as secure as it possibly can be, and reports from the community help us to do this. 

Firstly, it's very pleasing to hear from @scott001 that this is the first issue in over 10 years of use - I hope that helps to go to show that compromising Revive Adserver is not easy an easy thing to do!

In terms of @scott001's post about the two back-door scripts having the same date/time as the rest of the release file, I would like to remind all users to always ensure they get Revive Adserver from the official website links, and to check the MD5 hashes of the files that we publish before using them. We have seen reports in the past where we suspect (but have not been able to prove) that users downloaded Revive Adserver from a non-official source, and that their systems were compromised in this way. (I am not saying that @scott001 definitely did this - I just wanted to reminder everyone to use the official source.)

Having said that - we have double checked our releases, and they have not been compromised - so, the files @scott001 was seeing may have come from elsewhere. (It is possible to alter the creation date/time of files, so it's not a guarantee of when they were created.)

 

In terms of the Revive Adserver team responding to posts such as these - unfortunately your post came during what (for all of us) was a bit of an end of year break. We, unfortunately, are not a large, well funded team, able to provide 24/7 support - this is a community forum (rather than a paid for support system), after all. (If you'd like to help us out, so that we can grow, and possibly move towards more core-team support, please see our Patreon page!).

If, in future, anyone has concrete evidence of system compromise - with specific details that will help us figure out the cause - then please, do by all means raise a HackerOne issue. We are more likely to see and respond to comprehensive, detailed reports of issues there. (But please note we will not allow HackerOne issues that attempt to simply get personal support from the core team.)

I do note that @Oleg Rumjancev has reported an inability to log a report in HackerOne, but as far as I can see, the system is working fine - it may be worth attempting this again, if you have specific information that could help us trace a vulnerability, please.

 

I hope that all of this helps clarify what you can expect from the core team, and the best way to deal with and report security issues!

Sincerely,

Andrew

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