Tatsu recently experienced a major vulnerability, thousands of our customers who’re using the lower versions of the Tatsu plugin on their site are affected by this vulnerability.
We were taken aback by the sudden barrage of critical customer support tickets, without wasting time we spun into action and created a QRT to mitigate the vulnerability.
As per the initial investigation by our Security Team, someone exploited a vulnerability in the Tatsu Plugin and created a virus that modifies the core PHP files while also creating new files.
We were fully aware of this vulnerability which was initially identified in one of our security audits. We had fixed this vulnerability with a plugin update. However, some of the sites that were still running on the lower versions of the Tatsu plugin got affected by the vulnerability.
The vulnerability can be fixed with a Site Cleanup and a plugin update.
Newly Created files will be something like this: You need to delete these files.
wp-option.phpwp-special.php/uploads/typehub/custom/dn46/.clone.php/uploads/typehub/custom/dn46/.class.php/uploads/index.php/uploads/typehub/custom/dn46/.demo.php/uploads/typehub/custom/tatsu/.shell.php/uploads/typehub/custom/dn3/.class.php/uploads/typehub/custom/ccpl//uploads/typehub/custom/tastyy/wp-content/uploads/typehub/custom/dn2/.class.phpwp-content/uploads/typehub/custom/dn2/demo.htmlwp-content/uploads/typehub/custom/dn2/class.htmlwp-content/uploads/typehub/custom/dn2/class - копия.html
Modified files: wp-blog-header.phpwp-content/index.php
To restore this file:
You can perform these tasks manually: Use FTP or File Manager provided by cPanel to clean up the files.
Click on the Download Tatsu button to download the latest plugin zip. Upload the zip as a plugin in WordPress and it’s done.
Even after the site clean up and Tatsu update if you find that your site is being redirected to another unknown site then follow the below-mentioned steps:
Users are reaching out to us saying their site is being redirected to an unknown site. After further investigation in the database, it was found that a malicious script has been embedded after every paragraph that redirects a user to another dummy site.
You would need to perform a check on your server, you can take the help of the server support to identify the malicious script if any.
Once the script has been identified, you need to install the Better Search Replace plugin and replace the redirection link with a blank space.
Replacing the script with blank space will solve the issue and your site will be back to normal.
After performing the above activities Check if your website is working fine, if not contact [email protected] right away.
Viraj is a Blogger involved in publishing amazing content for ExpressTech Blogs. He loves writing on WordPress Plugins, Themes, and Shopify Apps. But when he is not working, you can find him binge-watching Netflix Documentaries.
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