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Guide to the Secure Configuration of Debian 10

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Configure Polyinstantiation of /var/tmp Directories

    To configure polyinstantiated /tmp directories, first create the parent directories which will hold the polyinstantiation child directories. Use the following command: <pre>$ sudo mkdir --mode 000 ...
    Rule Low Severity
  • Ensure that User Home Directories are not Group-Writable or World-Readable

    For each human user of the system, view the permissions of the user's home directory: <pre># ls -ld /home/<i>USER</i></pre> Ensure that the directory is not group-writable and that it is not world-...
    Rule Medium Severity
  • Ensure that No Dangerous Directories Exist in Root's Path

    The active path of the root account can be obtained by starting a new root shell and running: <pre># echo $PATH</pre> This will produce a colon-separated list of directories in the path. <br><br> C...
    Group
  • Ensure that Root's Path Does Not Include World or Group-Writable Directories

    For each element in root's path, run:
    # ls -ld DIR
    and ensure that write permissions are disabled for group and other.
    Rule Medium Severity
  • Ensure that Root's Path Does Not Include Relative Paths or Null Directories

    Ensure that none of the directories in root's path is equal to a single <code>.</code> character, or that it contains any instances that lead to relative path traversal, such as <code>..</code> or ...
    Rule Unknown Severity
  • Ensure that Users Have Sensible Umask Values

    The umask setting controls the default permissions for the creation of new files. With a default <code>umask</code> setting of 077, files and directories created by users will not be readable by an...
    Group
  • Sensible umask

    Enter default user umask
    Value
  • Ensure the Default Umask is Set Correctly in login.defs

    To ensure the default umask controlled by <code>/etc/login.defs</code> is set properly, add or correct the <code>UMASK</code> setting in <code>/etc/login.defs</code> to read as follows: <pre>UMASK ...
    Rule Medium Severity
  • Ensure the Default Umask is Set Correctly in /etc/profile

    To ensure the default umask controlled by <code>/etc/profile</code> is set properly, add or correct the <code>umask</code> setting in <code>/etc/profile</code> to read as follows: <pre>umask <xccdf...
    Rule Medium Severity
  • System Accounting with auditd

    The audit service provides substantial capabilities for recording system activities. By default, the service audits about SELinux AVC denials and certain types of security-relevant events such as s...
    Group

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