Language: Python
Label: vulnerable
CWE: CWE-269 \u2014 Improper Privilege Management
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Code:
    def test_run_as_real_user(self) -> None:
        """Test run_as_real_user() with SUDO_UID set."""
        pwuid = pwd.getpwuid(int(os.environ["SUDO_UID"]))
        with tempfile.TemporaryDirectory() as tmpdir:
            # rename test program to fake gvfsd
            gvfsd_mock = os.path.join(tmpdir, "gvfsd")
            shutil.copy(self.TEST_EXECUTABLE, gvfsd_mock)
            gvfsd_env = {
                "XDG_DATA_DIRS": "mocked XDG data dir",
                "DBUS_SESSION_BUS_ADDRESS": "/fake/dbus/path",
            }
            with self._run_test_executable(gvfsd_mock, env=gvfsd_env):
                with unittest.mock.patch(
                    "subprocess.run", side_effect=mock_run_calls_except_pgrep
                ) as run_mock:
                    run_as_real_user(["/bin/true"])

        run_mock.assert_called_with(
            ["/bin/true"],
            check=False,
            env={
                "DBUS_SESSION_BUS_ADDRESS": "/fake/dbus/path",
                "XDG_DATA_DIRS": "mocked XDG data dir",
                "HOME": pwuid.pw_dir,
            },
            user=int(os.environ["SUDO_UID"]),
            group=pwuid.pw_gid,
            extra_groups=os.getgrouplist(pwuid.pw_name, pwuid.pw_gid),
        )
        self.assertEqual(run_mock.call_count, 2)