Vulnerabilities in WordPress. Templates to be checked
How to protect an existing blog. Plus Seo news.
Blog posts were not possible due to being ill with a cold. During this time, there were many interesting things.
Regular readers and subscribers have noticed a change in the blog’s appearance.
Is it a design? Do I get tired of this design.
Non, really. The support team at the new hosting provider was very vocal about the suspicious coding in the old WordPress theme.
Codes of vulnerability
This is how to code:
$ _F = __ FILE __; $ _ X = ‘Pz48P3BocA0K…… ZjNuY3Q0Mm4gcHIydDV…’; eval (base64_decode (‘nLCInIi4kX0YuIiciLCRfWCk…… 7ZXZhbCgkX1IpOyRfUj0wOyRfWD0wOw ==’)); is identified by their installed antivirus as PHP shell-51 .
It was impossible to determine what type of fruit this shell-51 was in net. However, PHP shell scripts are usually just scripts that remotely execute commands on the server via a browser. This implies that unauthorized people may be able to access the server (read, write, and edit).
Looking ahead, I will tell you that it was impossible to identify shells in the blog. Base64 encoded links to developer sites were the only ones that I could see. I had disabled search engines from the visual output of the template blog and removed it from indexing.
You might find a line that starts with:
$ _F = $_ FILE__; $_ X = in your template’s PHP files (usually found in the functions.php file of your WP template, but less often in the header or sidebar). You can find it here.
You can verify the PHP code of malicious constructs using the online service http://uneval.com/ru
This service allows you to close such functions. You should also save the original scan file so that you can upload it again to the server in the event of an error.
This service is also convenient for choosing templates for future websites, scanning, calmed down (or non), and installing (or looking for more).
Let’s get back to the hosting provider, and the hackers.
While I understand the need for legal support, they seem a bit confused by the idea that anyone not registered can climb the servers. It is a very expensive task to view and decode every “left” code. I was forced to delete the template from the blog. Due to the complex structure of css/php scripts, editing it proved to be a very expensive task.
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This is why I warn anyone who is confused by the choice for a CMS template: If you like the template, check out how many stylesheets it uses. Editing the site design with more than two or three css files will be much more difficult than a template that only uses one or two CSS. It is also easier to hide malicious scripts or other “left-encodings” when you create templates.
This blog was not affected by hacker attacks, but another blog, sborcomp.ru, got it. Some clever man phished or simply took the password and put the code of an interesting program on the site. This script inserts links in dots within the text of posts.
Some new “malware” is evident from the insufficient information available on the Internet. This is because links can appear or disappear. This is the funny thing about this blog. It has been completely ignored and promoted with zero puzomerki. The guys from Moscow’s northwestern administrative district have a question: “What are better links than those in the body of posts? Or from thematic text in the comments?”
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