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Merge pull request #4581 from TRodziewicz/remove_supp_for_extensions_in_pre-v3_X.509_certs

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Remove MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 option
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Manuel Pégourié-Gonnard 2021-06-02 13:48:03 +02:00 committed by GitHub
commit 1b1327cc0d
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5 changed files with 22 additions and 37 deletions
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3
ChangeLog.d/issue4386.txt Normal file
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@ -0,0 +1,3 @@
Removals
* Remove the MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 option and let the code
behave as if it was always disabled. Fixes #4386.

14
docs/3.0-migration-guide.d/remove_supp_for_extensions_in_pre-v3_X_509_certs.md Normal file
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@ -0,0 +1,14 @@
Remove the `MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3` option
--
This change does not affect users who were using the default configuration, as
this option was already disabled by default. Also, it does not affect users who
are working with current V3 X.509 certificates.
Extensions were added in V3 of the X.509 specification, so pre-V3 certificates
containing extensions were never compliant. Mbed TLS now rejects them with a
parsing error in all configurations, as it did previously in the default
configuration.
If you are working with the pre-V3 certificates you need to switch to the
current ones.

10
include/mbedtls/config.h
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@ -1908,16 +1908,6 @@
*/
#define MBEDTLS_VERSION_FEATURES
/**
* \def MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
*
* If set, the X509 parser will not break-off when parsing an X509 certificate
* and encountering an extension in a v1 or v2 certificate.
*
* Uncomment to prevent an error.
*/
//#define MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
/**
* \def MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
*

2
library/x509_crt.c
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@ -1268,9 +1268,7 @@ static int x509_crt_parse_der_core( mbedtls_x509_crt *crt,
}
}
#if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
if( crt->version == 3 )
#endif
{
ret = x509_get_crt_ext( &p, end, crt, cb, p_ctx );
if( ret != 0 )

30
tests/suites/test_suite_x509parse.data
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@ -178,10 +178,6 @@ X509 CRT information Non-ASCII string in issuer name and subject name
depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509_cert_info:"data_files/non-ascii-string-in-issuer.crt":"cert. version \: 3\nserial number \: 05\:E6\:53\:E7\:1B\:74\:F0\:B5\:D3\:84\:6D\:0C\:6D\:DC\:FA\:3F\:A4\:5A\:2B\:E0\nissuer name \: C=JP, ST=Tokyo, O=?????????????????? Ltd, CN=?????????????????? CA\nsubject name \: C=JP, ST=Tokyo, O=?????????????????? Ltd, CN=?????????????????? CA\nissued on \: 2020-05-20 16\:17\:23\nexpires on \: 2020-06-19 16\:17\:23\nsigned using \: RSA with SHA-256\nRSA key size \: 2048 bits\nbasic constraints \: CA=true\n"
X509 certificate v1 with extension
depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_SHA1_C
x509_cert_info:"data_files/cert_v1_with_ext.crt":"cert. version \: 1\nserial number \: BD\:ED\:44\:C7\:D2\:3E\:C2\:A4\nissuer name \: C=XX, ST=XX, L=XX, O=XX, OU=XX, emailAddress=admin@identity-check.org, CN=identity-check.org\nsubject name \: C=XX, ST=XX, L=XX, O=XX, OU=XX, emailAddress=admin@identity-check.org, CN=identity-check.org\nissued on \: 2013-07-04 16\:17\:02\nexpires on \: 2014-07-04 16\:17\:02\nsigned using \: RSA with SHA1\nRSA key size \: 2048 bits\nsubject alt name \:\n dNSName \: identity-check.org\n dNSName \: www.identity-check.org\n <unsupported>\n"
X509 SAN parsing otherName
depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_SHA256_C
x509_parse_san:"data_files/server5-othername.crt":"type \: 0\notherName \: hardware module name \: hardware type \: 1.3.6.1.4.1.17.3, hardware serial number \: 123456\n"
@ -1575,7 +1571,7 @@ depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"308198308182a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa201300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_OUT_OF_DATA
X509 CRT ASN1 (TBS, valid IssuerID, inv SubjectID, inv tag)
depends_on:!MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819a308184a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa1000500300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
X509 CRT ASN1 (TBSCertificate v3, ext SubjectAlternativeName malformed)
@ -1595,21 +1591,13 @@ depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819a308184a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a201300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_OUT_OF_DATA
X509 CRT ASN1 (TBS, IssuerID unsupported in v1 CRT)
depends_on:!MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819a308184a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a201300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
X509 CRT ASN1 (TBS, IssuerID unsupported in v1 CRT, ALLOW_EXTENSIONS_NON_V3)
depends_on:MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819a308184a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a201300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
X509 CRT ASN1 (TBS, SubjectID unsupported in v1 CRT)
depends_on:!MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819a308184a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa200a201300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
X509 CRT ASN1 (TBS, SubjectID unsupported in v1 CRT, ALLOW_EXTENSIONS_NON_V3)
depends_on:MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819a308184a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa200a201300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
X509 CRT ASN1 (TBS, inv v3Ext, inv tag)
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"30819c308186a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a2000500300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
@ -1858,24 +1846,16 @@ X509 CRT ASN1 (TBS, inv v3Ext, SubjectAltName repeated outside Extensions)
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"3081dc3081c6a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa100a200a321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
X509 CRT (TBS, valid v3Ext in v1 CRT, ALLOW_EXTENSIONS_NON_V3)
depends_on:MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"3081b93081a3a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff":"cert. version \: 1\nserial number \: DE\:AD\:BE\:EF\nissuer name \: ??=Test\nsubject name \: ??=Test\nissued on \: 2009-01-01 00\:00\:00\nexpires on \: 2009-12-31 23\:59\:59\nsigned using \: RSA with SHA-256\nRSA key size \: 128 bits\nsubject alt name \:\n dNSName \: foo.test\n dNSName \: bar.test\n":0
X509 CRT (TBS, valid v3Ext in v2 CRT, ALLOW_EXTENSIONS_NON_V3)
depends_on:MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"3081b93081a3a0030201018204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff":"cert. version \: 2\nserial number \: DE\:AD\:BE\:EF\nissuer name \: ??=Test\nsubject name \: ??=Test\nissued on \: 2009-01-01 00\:00\:00\nexpires on \: 2009-12-31 23\:59\:59\nsigned using \: RSA with SHA-256\nRSA key size \: 128 bits\nsubject alt name \:\n dNSName \: foo.test\n dNSName \: bar.test\n":0
X509 CRT (TBS, valid v3Ext in v3 CRT)
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"3081b93081a3a0030201028204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff":"cert. version \: 3\nserial number \: DE\:AD\:BE\:EF\nissuer name \: ??=Test\nsubject name \: ??=Test\nissued on \: 2009-01-01 00\:00\:00\nexpires on \: 2009-12-31 23\:59\:59\nsigned using \: RSA with SHA-256\nRSA key size \: 128 bits\nsubject alt name \:\n dNSName \: foo.test\n dNSName \: bar.test\n":0
X509 CRT ASN1 (TBS, valid v3Ext in v1 CRT)
depends_on:!MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"3081b93081a3a0030201008204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
X509 CRT ASN1 (TBS, valid v3Ext in v2 CRT)
depends_on:!MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA256_C
x509parse_crt:"3081b93081a3a0030201018204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffffa321301f301d0603551d11041630148208666f6f2e7465737482086261722e74657374300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
X509 CRT ASN1 (TBS, valid SubjectID, valid IssuerID, inv v3Ext, SubjectAltName repeated outside Extensions, inv SubjectAltNames tag)