Greetings.
The 3.9.3 release of Joomla includes a new post-installation message that recommends an addition to .htaccess.
If I am using Admin Tools is this addition recommended/necessary? If so, do you have a recommendation about where to best add it?
Thank you.
The 3.9.3 release of Joomla includes a new post-installation message that recommends an addition to .htaccess.
.htaccess & web.config security Update
Since version 3.9.3
Since Joomla 3.9.3, Joomla is shipped with additional security hardenings in the default htaccess.txt and web.config.txt files. These hardenings disable the so called MIME-type sniffing feature in webbrowsers. The sniffing leads to specific attack vectors, where scripts in normally harmless file formats (i.e. images) will be executed, leading to Cross-Site-Scripting vulnerabilities.
The security teams recommends to manually apply the necessary changes to existing .htaccess or web.config files, as those files can not be updated automatically.
Changes for .htaccess
Add the following lines before "## Mod_rewrite in use.":
<IfModule mod_headers.c>
Header always set X-Content-Type-Options "nosniff"
</IfModule>
If I am using Admin Tools is this addition recommended/necessary? If so, do you have a recommendation about where to best add it?
Thank you.
