forked from lix-project/lix
109 lines
3.6 KiB
Nix
109 lines
3.6 KiB
Nix
![]() |
# Verify that Linux builds cannot create setuid or setgid binaries.
|
||
|
|
||
|
{ system, nix }:
|
||
|
|
||
|
with import <nixpkgs/nixos/lib/testing.nix> { inherit system; };
|
||
|
|
||
|
makeTest {
|
||
|
|
||
|
machine =
|
||
|
{ config, lib, pkgs, ... }:
|
||
|
{ virtualisation.writableStore = true;
|
||
|
nix.package = nix;
|
||
|
nix.binaryCaches = [ ];
|
||
|
nix.nixPath = [ "nixpkgs=${lib.cleanSource pkgs.path}" ];
|
||
|
virtualisation.pathsInNixDB = [ pkgs.stdenv pkgs.pkgsi686Linux.stdenv ];
|
||
|
};
|
||
|
|
||
|
testScript = { nodes }:
|
||
|
''
|
||
|
startAll;
|
||
|
|
||
|
# Copying to /tmp should succeed.
|
||
|
$machine->succeed('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" {} "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 555 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
# Creating a setuid binary should fail.
|
||
|
$machine->fail('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" {} "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
chmod 4755 /tmp/id
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 555 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
# Creating a setgid binary should fail.
|
||
|
$machine->fail('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" {} "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
chmod 2755 /tmp/id
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 555 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
# The checks should also work on 32-bit binaries.
|
||
|
$machine->fail('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> { system = "i686-linux"; }; runCommand "foo" {} "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
chmod 2755 /tmp/id
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 555 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
# The tests above use fchmodat(). Test chmod() as well.
|
||
|
$machine->succeed('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" { buildInputs = [ perl ]; } "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
perl -e \"chmod 0666, qw(/tmp/id) or die\"
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 666 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
$machine->fail('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" { buildInputs = [ perl ]; } "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
perl -e \"chmod 04755, qw(/tmp/id) or die\"
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 555 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
# And test fchmod().
|
||
|
$machine->succeed('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" { buildInputs = [ perl ]; } "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
perl -e \"my \\\$x; open \\\$x, qw(/tmp/id); chmod 01750, \\\$x or die\"
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 1750 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
|
||
|
$machine->fail('nix-build --option build-use-sandbox false -E \'(with import <nixpkgs> {}; runCommand "foo" { buildInputs = [ perl ]; } "
|
||
|
mkdir -p $out
|
||
|
cp ${pkgs.coreutils}/bin/id /tmp/id
|
||
|
perl -e \"my \\\$x; open \\\$x, qw(/tmp/id); chmod 04777, \\\$x or die\"
|
||
|
")\' ');
|
||
|
|
||
|
$machine->succeed('[[ $(stat -c %a /tmp/id) = 555 ]]');
|
||
|
|
||
|
$machine->succeed("rm /tmp/id");
|
||
|
'';
|
||
|
|
||
|
}
|