V-268148

Discussion

In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking such applications/programs, those users are indirectly provided with greater privileges than assigned by the organizations. Some programs and processes are required to operate at a higher privilege level and therefore should be excluded from the organization-defined software list after review.

Check Content

Verify NixOS audits and provides alerts of audit failures by running the following command: 

$grep A -15 security.auditd /etc/nixos/configuration.nix

 /etc/nixos/configuration.nix: 

 security.auditd.enable = true;
 security.audit.enable = true;
 security.audit.rules = [
  ''
  <audit_rules>
  ''
 ]; security.audit.rules = [
  "-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k execpriv"
  "-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k execpriv"
  "-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k execpriv"
  "-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k execpriv"
 ];

If "security.auditd", "security.audit" and the additional modifications do not equal true, are missing, or are commented out, this is a finding.