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u-boot/test/py/tests/test_efi_secboot/test_signed.py
Raymond Mao 550862bc12 efi_loader: Boot var automatic management 
Changes for complying to EFI spec §3.5.1.1
'Removable Media Boot Behavior'.
Boot variables can be automatically generated during a removable
media is probed. At the same time, unused boot variables will be
detected and removed.

Please note that currently the function 'efi_disk_remove' has no
ability to distinguish below two scenarios
a) Unplugging of a removable media under U-Boot
b) U-Boot exiting and booting an OS
Thus currently the boot variables management is not added into
'efi_disk_remove' to avoid boot options being added/erased
repeatedly under scenario b) during power cycles
See TODO comments under function 'efi_disk_remove' for more details

The original efi_secboot tests expect that BootOrder EFI variable
is not defined. With this commit, the BootOrder EFI variable is
automatically added when the disk is detected. The original
efi_secboot tests end up with unexpected failure.
The efi_secboot tests need to be modified to explicitly set
the BootOrder EFI variable.

squashfs and erofs ls tests are also affected by this modification,
need to clear the previous state before squashfs ls test starts.

Co-developed-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Joao Marcos Costa <jmcosta944@gmail.com>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2023-11-18 10:08:08 +02:00

371 lines
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# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2019, Linaro Limited
# Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
#
# U-Boot UEFI: Signed Image Authentication Test
"""
This test verifies image authentication for signed images.
"""
import pytest
@pytest.mark.boardspec('sandbox')
@pytest.mark.buildconfigspec('efi_secure_boot')
@pytest.mark.buildconfigspec('cmd_efidebug')
@pytest.mark.buildconfigspec('cmd_fat')
@pytest.mark.buildconfigspec('cmd_nvedit_efi')
@pytest.mark.slow
class TestEfiSignedImage(object):
def test_efi_signed_image_auth1(self, u_boot_console, efi_boot_env):
"""
Test Case 1 - Secure boot is not in force
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 1a'):
# Test Case 1a, run signed image if no PK
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'efidebug boot add -b 1 HELLO1 host 0:1 /helloworld.efi.signed -s ""',
'efidebug boot order 1',
'bootefi bootmgr'])
assert 'Hello, world!' in ''.join(output)
with u_boot_console.log.section('Test Case 1b'):
# Test Case 1b, run unsigned image if no PK
output = u_boot_console.run_command_list([
'efidebug boot add -b 2 HELLO2 host 0:1 /helloworld.efi -s ""',
'efidebug boot order 2',
'bootefi bootmgr'])
assert 'Hello, world!' in ''.join(output)
def test_efi_signed_image_auth2(self, u_boot_console, efi_boot_env):
"""
Test Case 2 - Secure boot is in force,
authenticated by db (TEST_db certificate in db)
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 2a'):
# Test Case 2a, db is not yet installed
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO1 host 0:1 /helloworld.efi.signed -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert('\'HELLO1\' failed' in ''.join(output))
assert('efi_start_image() returned: 26' in ''.join(output))
output = u_boot_console.run_command_list([
'efidebug boot add -b 2 HELLO2 host 0:1 /helloworld.efi -s ""',
'efidebug boot order 2',
'efidebug test bootmgr'])
assert '\'HELLO2\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
with u_boot_console.log.section('Test Case 2b'):
# Test Case 2b, authenticated by db
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 2',
'efidebug test bootmgr'])
assert '\'HELLO2\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'bootefi bootmgr'])
assert 'Hello, world!' in ''.join(output)
def test_efi_signed_image_auth3(self, u_boot_console, efi_boot_env):
"""
Test Case 3 - rejected by dbx (TEST_db certificate in dbx)
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 3a'):
# Test Case 3a, rejected by dbx
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
with u_boot_console.log.section('Test Case 3b'):
# Test Case 3b, rejected by dbx even if db allows
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
def test_efi_signed_image_auth4(self, u_boot_console, efi_boot_env):
"""
Test Case 4 - revoked by dbx (digest of TEST_db certificate in dbx)
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 4'):
# Test Case 4, rejected by dbx
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 dbx_hash.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx',
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
def test_efi_signed_image_auth5(self, u_boot_console, efi_boot_env):
"""
Test Case 5 - multiple signatures
one signed with TEST_db, and
one signed with TEST_db1
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 5a'):
# Test Case 5a, authenticated even if only one of signatures
# is verified
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed_2sigs -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert 'Hello, world!' in ''.join(output)
with u_boot_console.log.section('Test Case 5b'):
# Test Case 5b, authenticated if both signatures are verified
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 db1.auth',
'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize db'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert 'Hello, world!' in ''.join(output)
with u_boot_console.log.section('Test Case 5c'):
# Test Case 5c, rejected if one of signatures (digest of
# certificate) is revoked
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 dbx_hash.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
with u_boot_console.log.section('Test Case 5d'):
# Test Case 5d, rejected if both of signatures are revoked
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 dbx_hash1.auth',
'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
# Try rejection in reverse order.
u_boot_console.restart_uboot()
with u_boot_console.log.section('Test Case 5e'):
# Test Case 5e, authenticated even if only one of signatures
# is verified. Same as before but reject dbx_hash1.auth only
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK',
'fatload host 0:1 4000000 db1.auth',
'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize db',
'fatload host 0:1 4000000 dbx_hash1.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed_2sigs -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
def test_efi_signed_image_auth6(self, u_boot_console, efi_boot_env):
"""
Test Case 6 - using digest of signed image in database
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 6a'):
# Test Case 6a, verified by image's digest in db
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db_hello_signed.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed -s ""',
'efidebug boot order 1',
'bootefi bootmgr'])
assert 'Hello, world!' in ''.join(output)
with u_boot_console.log.section('Test Case 6b'):
# Test Case 6b, rejected by TEST_db certificate in dbx
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 dbx_db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
with u_boot_console.log.section('Test Case 6c'):
# Test Case 6c, rejected by image's digest in dbx
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 dbx_hello_signed.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
def test_efi_signed_image_auth7(self, u_boot_console, efi_boot_env):
"""
Test Case 7 - Reject images based on the sha384/512 of their x509 cert
"""
# sha384 of an x509 cert in dbx
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 7a'):
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK',
'fatload host 0:1 4000000 db1.auth',
'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize db',
'fatload host 0:1 4000000 dbx_hash384.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed_2sigs -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
# sha512 of an x509 cert in dbx
u_boot_console.restart_uboot()
with u_boot_console.log.section('Test Case 7b'):
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK',
'fatload host 0:1 4000000 db1.auth',
'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize db',
'fatload host 0:1 4000000 dbx_hash512.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed_2sigs -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
assert 'efi_start_image() returned: 26' in ''.join(output)
def test_efi_signed_image_auth8(self, u_boot_console, efi_boot_env):
"""
Test Case 8 - Secure boot is in force,
Same as Test Case 2 but the image binary to be loaded
was willfully modified (forged)
Must be rejected.
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 8a'):
# Test Case 8a, Secure boot is not yet forced
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'efidebug boot add -b 1 HELLO1 host 0:1 /helloworld_forged.efi.signed -s ""',
'efidebug boot order 1',
'efidebug test bootmgr'])
assert('hELLO, world!' in ''.join(output))
with u_boot_console.log.section('Test Case 8b'):
# Test Case 8b, Install signature database and verify the image
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 db.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot order 1',
'efidebug test bootmgr'])
assert(not 'hELLO, world!' in ''.join(output))
assert('\'HELLO1\' failed' in ''.join(output))
assert('efi_start_image() returned: 26' in ''.join(output))
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