65 lines
1.9 KiB
Nix
65 lines
1.9 KiB
Nix
import ./make-test.nix ({ pkgs, ...} : {
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name = "hardened";
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meta = with pkgs.stdenv.lib.maintainers; {
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maintainers = [ joachifm ];
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};
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machine =
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{ config, lib, pkgs, ... }:
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with lib;
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{ users.users.alice = { isNormalUser = true; extraGroups = [ "proc" ]; };
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users.users.sybil = { isNormalUser = true; group = "wheel"; };
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imports = [ ../modules/profiles/hardened.nix ];
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virtualisation.emptyDiskImages = [ 4096 ];
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boot.initrd.postDeviceCommands = ''
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${pkgs.dosfstools}/bin/mkfs.vfat -n EFISYS /dev/vdb
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'';
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fileSystems = lib.mkVMOverride {
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"/efi" = {
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device = "/dev/disk/by-label/EFISYS";
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fsType = "vfat";
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options = [ "noauto" ];
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};
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};
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};
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testScript =
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''
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# Test hidepid
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subtest "hidepid", sub {
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$machine->succeed("grep -Fq hidepid=2 /proc/mounts");
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$machine->succeed("[ `su - sybil -c 'pgrep -c -u root'` = 0 ]");
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$machine->succeed("[ `su - alice -c 'pgrep -c -u root'` != 0 ]");
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};
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# Test kernel module hardening
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subtest "lock-modules", sub {
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$machine->waitForUnit("multi-user.target");
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# note: this better a be module we normally wouldn't load ...
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$machine->fail("modprobe dccp");
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};
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# Test userns
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subtest "userns", sub {
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$machine->fail("unshare --user");
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};
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# Test dmesg restriction
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subtest "dmesg", sub {
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$machine->fail("su -l alice -c dmesg");
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};
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# Test access to kcore
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subtest "kcore", sub {
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$machine->fail("cat /proc/kcore");
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};
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# Test deferred mount
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subtest "mount", sub {
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$machine->fail("mountpoint -q /efi"); # was deferred
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$machine->execute("mkdir -p /efi");
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$machine->succeed("mount /dev/disk/by-label/EFISYS /efi");
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$machine->succeed("mountpoint -q /efi"); # now mounted
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};
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'';
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})
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