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Support faulty X509 v1 certificates with extensions

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(POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
This commit is contained in:
Paul Bakker 2013-09-23 15:01:36 +02:00
parent 15b9b3a7e0
commit c27c4e2efb
5 changed files with 44 additions and 0 deletions
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2
ChangeLog
View File

@ -46,6 +46,8 @@ Changes
* X509 core refactored
* x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
* Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
* Support faulty X509 v1 certificates with extensions
(POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Bugfix
* Fixed parse error in ssl_parse_certificate_request()

11
include/polarssl/config.h
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@ -660,6 +660,17 @@
*/
#define POLARSSL_SSL_TRUNCATED_HMAC
/**
* \def POLARSSL_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 POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3
*/
/**
* \def POLARSSL_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
*

4
library/x509_crt.c
View File

@ -697,15 +697,19 @@ static int x509_crt_parse_der_core( x509_crt *crt, const unsigned char *buf,
}
}
#if !defined(POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
if( crt->version == 3 )
{
#endif
ret = x509_get_crt_ext( &p, end, crt);
if( ret != 0 )
{
x509_crt_free( crt );
return( ret );
}
#if !defined(POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
}
#endif
if( p != end )
{

23
tests/data_files/cert_v1_with_ext.crt Normal file
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@ -0,0 +1,23 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

4
tests/suites/test_suite_x509parse.data
View File

@ -70,6 +70,10 @@ X509 Certificate information EC signed by RSA
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_ECP_C
x509_cert_info:"data_files/server3.crt":"cert. version \: 3\nserial number \: 0D\nissuer name \: C=NL, O=PolarSSL, CN=PolarSSL Test CA\nsubject name \: C=NL, O=PolarSSL, CN=localhost\nissued on \: 2013-08-09 09\:17\:03\nexpires on \: 2023-08-07 09\:17\:03\nsigned using \: RSA with SHA1\nEC key size \: 192 bits\n"
X509 certificate v1 with extension
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_RSA_C:POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3
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\n"
X509 CRL information #1
depends_on:POLARSSL_PEM_PARSE_C
x509_crl_info:"data_files/crl_expired.pem":"CRL version \: 1\nissuer name \: C=NL, O=PolarSSL, CN=PolarSSL Test CA\nthis update \: 2011-02-20 10\:24\:19\nnext update \: 2011-02-20 11\:24\:19\nRevoked certificates\:\nserial number\: 01 revocation date\: 2011-02-12 14\:44\:07\nserial number\: 03 revocation date\: 2011-02-12 14\:44\:07\nsigned using \: RSA with SHA1\n"