Guide to the Secure Configuration of Red Hat Enterprise Linux 8
Rules, Groups, and Values defined within the XCCDF Benchmark
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Configure PERL Securely
PERL (Practical Extraction and Report Language) is an interpreted language optimized for scanning arbitrary text files, extracting information from...Group -
Configure HTTP PERL Scripts To Use TAINT Option
If the <code>mod_perl</code> module is installed, enable Perl Taint checking in <code>/etc/httpd/conf/httpd.conf</code>. To enable Perl Taint check...Rule Medium Severity -
Configure PHP Securely
PHP is a widely-used and often misconfigured server-side scripting language. It should be used with caution, but configured appropriately when need...Group -
Directory Restrictions
The Directory tags in the web server configuration file allow finer grained access control for a specified directory. All web directories should be...Group -
Make Each System a Client or a Server, not Both
If NFS must be used, it should be deployed in the simplest configuration possible to avoid maintainability problems which may lead to unnecessary s...Group -
Disable rpcbind Service
The rpcbind utility maps RPC services to the ports on which they listen. RPC processes notify rpcbind when they start, registering the ports they a...Rule Low Severity -
Web Content Directories Must Not Be Shared Anonymously
Web content directories should not be shared anonymously over remote filesystems such as <code>nfs</code> and <code>smb</code>. Remove the shares f...Rule Medium Severity -
Remove Write Permissions From Filesystem Paths And Server Scripts
Configure permissions for each instance of <code>Alias</code>, <code>ScriptAlias</code>, and <code>ScriptAliasMatch</code> that exist. <pre>$ sudo ...Rule High Severity -
Disable Anonymous FTP Access
If any directories that contain dynamic scripts can be accessed via FTP by any group or user that does not require access, remove permissions to su...Rule Medium Severity -
Ignore HTTPD .htaccess Files
SetAllowOverridetononefor each instant of<Directory>.Rule Medium Severity -
Limit Available Methods
Web server methods are defined in section 9 of RFC 2616 ( <a href="http://www.ietf.org/rfc/rfc2616.txt">http://www.ietf.org/rfc/rfc2616.txt</a>...Rule Unknown Severity -
Restrict Other Critical Directories
All accessible web directories should be configured with similarly restrictive settings. The <code>Options</code> directive should be limited to ne...Rule Unknown Severity -
Restrict Root Directory
The <code>httpd</code> root directory should always have the most restrictive configuration enabled. <pre><Directory / > Options None A...Rule Unknown Severity -
Restrict Web Directory
The default configuration for the web (<code>/var/www/html</code>) Directory allows directory indexing (<code>Indexes</code>) and the following of ...Rule Unknown Severity -
Disable Proxy Support
The <code>proxy</code> module provides proxying support, allowing <code>httpd</code> to forward requests and serve as a gateway for other servers. ...Rule Unknown Severity -
Minimize Web Server Loadable Modules
A default installation of <code>httpd</code> includes a plethora of dynamically shared objects (DSO) that are loaded at run-time. Unlike the aforem...Group -
httpd Core Modules
These modules comprise a basic subset of modules that are likely needed for base <code>httpd</code> functionality; ensure they are not commented ou...Group -
Disable Cache Support
The <code>cache</code> module allows <code>httpd</code> to cache data, optimizing access to frequently accessed content. However, it introduces pot...Rule Unknown Severity -
Disable CGI Support
The <code>cgi</code> module allows HTML to interact with the CGI web programming language. <br><br> If this functionality is unnecessary, comment o...Rule Unknown Severity -
Disable HTTP Digest Authentication
The <code>auth_digest</code> module provides encrypted authentication sessions. If this functionality is unnecessary, comment out the related modul...Rule Unknown Severity
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