yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2025-03-08 10:09:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

Improve behaviour on fatal errors

Browse source 
If we didn't walk the whole chain, then there may be any kind of errors in the
part of the chain we didn't check, so setting all flags looks like the safe
thing to do.
This commit is contained in:
Manuel Pégourié-Gonnard 2017-06-22 12:19:27 +02:00 committed by Simon Butcher
parent 4770dbc913
commit 489939f829
3 changed files with 22 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
ChangeLog
View file

@ -25,6 +25,11 @@ Bugfix
to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
KNOX Security, Samsung Research America
Changes
* Certificate verification functions now set flags to -1 in case the full
chain was not verified due to an internal error (including in the verify
callback) or chain length limitations.
= mbed TLS 2.1.8 branch released 2017-06-21
Security

22
library/x509_crt.c
View file

@ -2195,11 +2195,14 @@ int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
mbedtls_x509_sequence *cur = NULL;
mbedtls_pk_type_t pk_type;
if( profile == NULL )
return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
*flags = 0;
if( profile == NULL )
{
ret = MBEDTLS_ERR_X509_BAD_INPUT_DATA;
goto exit;
}
if( cn != NULL )
{
name = &crt->subject;
@ -2273,7 +2276,7 @@ int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
ret = x509_crt_verify_top( crt, parent, ca_crl, profile,
pathlen, selfsigned, flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
goto exit;
}
else
{
@ -2288,17 +2291,24 @@ int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
ret = x509_crt_verify_child( crt, parent, trust_ca, ca_crl, profile,
pathlen, selfsigned, flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
goto exit;
}
else
{
ret = x509_crt_verify_top( crt, trust_ca, ca_crl, profile,
pathlen, selfsigned, flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
goto exit;
}
}
exit:
if( ret != 0 )
{
*flags = (uint32_t) -1;
return( ret );
}
if( *flags != 0 )
return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );

2
tests/suites/test_suite_x509parse.data
View file

@ -1186,7 +1186,7 @@ mbedtls_x509_crt_verify_max:"data_files/test-ca2.crt":"data_files/dir-maxpath":M
X509 CRT verify long chain (max intermediate CA + 1)
depends_on:MBEDTLS_SHA256_C:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
mbedtls_x509_crt_verify_max:"data_files/dir-maxpath/00.crt":"data_files/dir-maxpath":MBEDTLS_X509_MAX_INTERMEDIATE_CA+1:MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:0
mbedtls_x509_crt_verify_max:"data_files/dir-maxpath/00.crt":"data_files/dir-maxpath":MBEDTLS_X509_MAX_INTERMEDIATE_CA+1:MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:-1
X509 CRT verify chain #1 (zero pathlen intermediate)
depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C