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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 | # 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 @pytest.mark.restart class TestEfiSignedImage(object): def test_efi_signed_image_auth1(self, ubman, efi_boot_env): """ Test Case 1 - Secure boot is not in force """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 1a'): # Test Case 1a, run signed image if no PK output = ubman.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 ubman.log.section('Test Case 1b'): # Test Case 1b, run unsigned image if no PK output = ubman.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, ubman, efi_boot_env): """ Test Case 2 - Secure boot is in force, authenticated by db (TEST_db certificate in db) """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 2a'): # Test Case 2a, db is not yet installed output = ubman.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 = ubman.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_bootmgr_load() returned: 26' in ''.join(output)) output = ubman.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_bootmgr_load() returned: 26' in ''.join(output) with ubman.log.section('Test Case 2b'): # Test Case 2b, authenticated by db output = ubman.run_command_list([ 'fatload host 0:1 4000000 db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$filesize db']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 2', 'efidebug test bootmgr']) assert '\'HELLO2\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'bootefi bootmgr']) assert 'Hello, world!' in ''.join(output) def test_efi_signed_image_auth3(self, ubman, efi_boot_env): """ Test Case 3 - rejected by dbx (TEST_db certificate in dbx) """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 3a'): # Test Case 3a, rejected by dbx output = ubman.run_command_list([ 'host bind 0 %s' % disk_img, 'fatload host 0:1 4000000 db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$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 = ubman.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_bootmgr_load() returned: 26' in ''.join(output) with ubman.log.section('Test Case 3b'): # Test Case 3b, rejected by dbx even if db allows output = ubman.run_command_list([ 'fatload host 0:1 4000000 db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$filesize db']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) def test_efi_signed_image_auth4(self, ubman, efi_boot_env): """ Test Case 4 - revoked by dbx (digest of TEST_db certificate in dbx) """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 4'): # Test Case 4, rejected by dbx output = ubman.run_command_list([ 'host bind 0 %s' % disk_img, 'fatload host 0:1 4000000 dbx_hash.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$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:$filesize PK']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed -s ""', 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) def test_efi_signed_image_auth5(self, ubman, efi_boot_env): """ Test Case 5 - multiple signatures one signed with TEST_db, and one signed with TEST_db1 """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 5a'): # Test Case 5a, authenticated even if only one of signatures # is verified output = ubman.run_command_list([ 'host bind 0 %s' % disk_img, 'fatload host 0:1 4000000 db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$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 = ubman.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 ubman.log.section('Test Case 5b'): # Test Case 5b, authenticated if both signatures are verified output = ubman.run_command_list([ 'fatload host 0:1 4000000 db2.auth', 'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize db']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert 'Hello, world!' in ''.join(output) with ubman.log.section('Test Case 5c'): # Test Case 5c, rejected if one of signatures (digest of # certificate) is revoked output = ubman.run_command_list([ 'fatload host 0:1 4000000 dbx_hash.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) with ubman.log.section('Test Case 5d'): # Test Case 5d, rejected if both of signatures are revoked output = ubman.run_command_list([ 'fatload host 0:1 4000000 dbx_hash2.auth', 'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize dbx']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) # Try rejection in reverse order. ubman.restart_uboot() with ubman.log.section('Test Case 5e'): # Test Case 5e, authenticated even if only one of signatures # is verified. Same as before but reject dbx_hash1.auth only output = ubman.run_command_list([ 'host bind 0 %s' % disk_img, 'fatload host 0:1 4000000 db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$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 db2.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 = ubman.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_bootmgr_load() returned: 26' in ''.join(output) def test_efi_signed_image_auth6(self, ubman, efi_boot_env): """ Test Case 6 - using digest of signed image in database """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 6a'): # Test Case 6a, verified by image's digest in db output = ubman.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:$filesize PK']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed -s ""', 'efidebug boot order 1', 'bootefi bootmgr']) assert 'Hello, world!' in ''.join(output) with ubman.log.section('Test Case 6b'): # Test Case 6b, rejected by TEST_db certificate in dbx output = ubman.run_command_list([ 'fatload host 0:1 4000000 dbx_db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) with ubman.log.section('Test Case 6c'): # Test Case 6c, rejected by image's digest in dbx output = ubman.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 = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) def test_efi_signed_image_auth7(self, ubman, efi_boot_env): """ Test Case 7 - Reject images based on the sha384/512 of their x509 cert """ # sha384 of an x509 cert in dbx ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 7a'): output = ubman.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:$filesize PK', 'fatload host 0:1 4000000 db2.auth', 'setenv -e -nv -bs -rt -at -a -i 4000000:$filesize db', 'fatload host 0:1 4000000 dbx_hash384.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$filesize dbx']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot add -b 1 HELLO host 0:1 /helloworld.efi.signed_2sigs -s ""', 'efidebug boot order 1', 'efidebug test bootmgr']) assert '\'HELLO\' failed' in ''.join(output) assert 'efi_bootmgr_load() returned: 26' in ''.join(output) # sha512 of an x509 cert in dbx ubman.restart_uboot() with ubman.log.section('Test Case 7b'): output = ubman.run_command_list([ 'host bind 0 %s' % disk_img, 'fatload host 0:1 4000000 db.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$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 db2.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 = ubman.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_bootmgr_load() returned: 26' in ''.join(output) def test_efi_signed_image_auth8(self, ubman, 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. """ ubman.restart_uboot() disk_img = efi_boot_env with ubman.log.section('Test Case 8a'): # Test Case 8a, Secure boot is not yet forced output = ubman.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 ubman.log.section('Test Case 8b'): # Test Case 8b, Install signature database and verify the image output = ubman.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:$filesize PK']) assert 'Failed to set EFI variable' not in ''.join(output) output = ubman.run_command_list([ 'efidebug boot order 1', 'efidebug test bootmgr']) assert(not 'hELLO, world!' in ''.join(output)) assert('\'HELLO1\' failed' in ''.join(output)) assert('efi_bootmgr_load() returned: 26' in ''.join(output)) with ubman.log.section('Test Case 8c'): # Test Case 8c, Uninstall PK output = ubman.run_command_list([ 'fatload host 0:1 4000000 PK_null.auth', 'setenv -e -nv -bs -rt -at -i 4000000:$filesize PK', 'printenv -e -n PK']) assert 'Failed to set EFI variable' not in ''.join(output) assert '\"PK\" not defined' in ''.join(output) |