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Fix undefined shifts

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- in x509_profile_check_pk_alg
- in x509_profile_check_md_alg
- in x509_profile_check_key

and in ssl_cli.c : unsigned char gets promoted to signed integer
This commit is contained in:
Philippe Antoine 2018-05-11 11:06:29 +02:00
parent 33dd3236de
commit b5b254300e
3 changed files with 13 additions and 2 deletions
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2
ChangeLog
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@ -20,6 +20,8 @@ API Changes
Bugfix
* Fix an issue with MicroBlaze support in bn_mul.h which was causing the
build to fail. Found by zv-io. Fixes #1651.
* Fix undefined shifts with negative values in certificates parsing
(found by Catena cyber using oss-fuzz)
Changes
* Support TLS testing in out-of-source builds using cmake. Fixes #1193.

2
library/ssl_cli.c
View File

@ -3313,7 +3313,7 @@ static int ssl_parse_new_session_ticket( mbedtls_ssl_context *ssl )
msg = ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl );
lifetime = ( msg[0] << 24 ) | ( msg[1] << 16 ) |
lifetime = ( ((uint32_t) msg[0]) << 24 ) | ( msg[1] << 16 ) |
( msg[2] << 8 ) | ( msg[3] );
ticket_len = ( msg[4] << 8 ) | ( msg[5] );

9
library/x509_crt.c
View File

@ -163,6 +163,9 @@ const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
mbedtls_md_type_t md_alg )
{
if( md_alg == MBEDTLS_MD_NONE )
return( -1 );
if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
return( 0 );
@ -176,6 +179,9 @@ static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
mbedtls_pk_type_t pk_alg )
{
if( pk_alg == MBEDTLS_PK_NONE )
return( -1 );
if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
return( 0 );
@ -208,6 +214,9 @@ static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
{
const mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
if( gid == MBEDTLS_ECP_DP_NONE )
return( -1 );
if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
return( 0 );