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Reject certs and CRLs from the future

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Manuel Pégourié-Gonnard 2014-03-10 13:15:18 +01:00
parent 6304f786e0
commit 9533765b25
5 changed files with 56 additions and 6 deletions
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1
ChangeLog
View file

@ -18,6 +18,7 @@ Security
* Forbid change of server certificate during renegotiation to prevent
"triple handshake" attack when authentication mode is optional (the
attack was already impossible when authentication is required).
* Check notBefore timestamp of certificates and CRLs from the future.
Bugfix
* ecp_gen_keypair() does more tries to prevent failure because of

2
include/polarssl/x509.h
View file

@ -78,6 +78,8 @@
#define BADCERT_MISSING 0x40 /**< Certificate was missing. */
#define BADCERT_SKIP_VERIFY 0x80 /**< Certificate verification was skipped. */
#define BADCERT_OTHER 0x0100 /**< Other reason (can be used by verify callback) */
#define BADCERT_FUTURE 0x0200 /**< The certificate validity starts in the future. */
#define BADCRL_FUTURE 0x0400 /**< The CRL is from the future */
/* \} name */
/* \} addtogroup x509_module */

13
library/x509_crt.c
View file

@ -1255,6 +1255,9 @@ static int x509_crt_verifycrl( x509_crt *crt, x509_crt *ca,
if( x509_time_expired( &crl_list->next_update ) )
flags |= BADCRL_EXPIRED;
if( x509_time_future( &crl_list->this_update ) )
flags |= BADCRL_FUTURE;
/*
* Check if certificate is revoked
*/
@ -1340,6 +1343,9 @@ static int x509_crt_verify_top(
if( x509_time_expired( &child->valid_to ) )
*flags |= BADCERT_EXPIRED;
if( x509_time_future( &child->valid_from ) )
*flags |= BADCERT_FUTURE;
/*
* Child is the top of the chain. Check against the trust_ca list.
*/
@ -1420,6 +1426,9 @@ static int x509_crt_verify_top(
if( x509_time_expired( &trust_ca->valid_to ) )
ca_flags |= BADCERT_EXPIRED;
if( x509_time_future( &trust_ca->valid_from ) )
ca_flags |= BADCERT_FUTURE;
if( NULL != f_vrfy )
{
if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1, &ca_flags ) ) != 0 )
@ -1451,8 +1460,8 @@ static int x509_crt_verify_child(
x509_crt *grandparent;
const md_info_t *md_info;
if( x509_time_expired( &child->valid_to ) )
*flags |= BADCERT_EXPIRED;
if( x509_time_future( &child->valid_from ) )
*flags |= BADCERT_FUTURE;
md_info = md_info_from_type( child->sig_md );
if( md_info == NULL )

14
tests/data_files/server5-expired.crt Normal file
View file

@ -0,0 +1,14 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

32
tests/suites/test_suite_x509parse.data
View file

@ -194,22 +194,38 @@ X509 Time Future #6
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_ECP_C
x509_time_future:"data_files/test-ca2.crt":"valid_to":1
X509 Certificate verification #1 (Revoked Cert, Expired CRL)
X509 Certificate verification #1 (Revoked Cert, Expired CRL, no CN)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15
x509_verify:"data_files/server1.crt":"data_files/test-ca.crt":"data_files/crl_expired.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCRL_EXPIRED:"NULL"
X509 Certificate verification #1a (Revoked Cert, Future CRL, no CN)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server6.crt":"data_files/test-ca2.crt":"data_files/crl-future.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCRL_FUTURE:"NULL"
X509 Certificate verification #2 (Revoked Cert, Expired CRL)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15
x509_verify:"data_files/server1.crt":"data_files/test-ca.crt":"data_files/crl_expired.pem":"PolarSSL Server 1":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCRL_EXPIRED:"NULL"
X509 Certificate verification #3 (Revoked Cert, Expired CRL, CN Mismatch)
X509 Certificate verification #2a (Revoked Cert, Future CRL)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server6.crt":"data_files/test-ca2.crt":"data_files/crl-future.pem":"localhost":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCRL_FUTURE:"NULL"
X509 Certificate verification #3 (Revoked Cert, Future CRL, CN Mismatch)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15
x509_verify:"data_files/server1.crt":"data_files/test-ca.crt":"data_files/crl_expired.pem":"PolarSSL Wrong CN":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCRL_EXPIRED | BADCERT_CN_MISMATCH:"NULL"
X509 Certificate verification #3a (Revoked Cert, Expired CRL, CN Mismatch)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server6.crt":"data_files/test-ca2.crt":"data_files/crl-future.pem":"Wrong CN":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCRL_FUTURE | BADCERT_CN_MISMATCH:"NULL"
X509 Certificate verification #4 (Valid Cert, Expired CRL)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15
x509_verify:"data_files/server2.crt":"data_files/test-ca.crt":"data_files/crl_expired.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCRL_EXPIRED:"NULL"
X509 Certificate verification #4a (Revoked Cert, Future CRL)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server5.crt":"data_files/test-ca2.crt":"data_files/crl-future.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCRL_FUTURE:"NULL"
X509 Certificate verification #5 (Revoked Cert)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15
x509_verify:"data_files/server1.crt":"data_files/test-ca.crt":"data_files/crl.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED:"NULL"
@ -223,8 +239,16 @@ depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V1
x509_verify:"data_files/server1.crt":"data_files/test-ca.crt":"data_files/crl.pem":"PolarSSL Wrong CN":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_REVOKED | BADCERT_CN_MISMATCH:"NULL"
X509 Certificate verification #8 (Valid Cert)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15
x509_verify:"data_files/server2.crt":"data_files/test-ca.crt":"data_files/crl.pem":"NULL":0:0:"NULL"
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server5.crt":"data_files/test-ca2.crt":"data_files/crl-ec-sha1.pem":"NULL":0:0:"NULL"
X509 Certificate verification #8a (Expired Cert)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server5-expired.crt":"data_files/test-ca2.crt":"data_files/crl-ec-sha1.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_EXPIRED:"NULL"
X509 Certificate verification #8b (Future Cert)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_ECP_C:
x509_verify:"data_files/server5-future.crt":"data_files/test-ca2.crt":"data_files/crl-ec-sha1.pem":"NULL":POLARSSL_ERR_X509_CERT_VERIFY_FAILED:BADCERT_FUTURE:"NULL"
X509 Certificate verification #9 (Not trusted Cert)
depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15