yuzu-emu/mbedtls
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Merge remote-tracking branch 'upstream-public/pr/2131' into development

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This commit is contained in:
Jaeden Amero 2018-12-06 16:04:55 +00:00
commit bc1cf5cd36
2 changed files with 10 additions and 7 deletions
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3
ChangeLog
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@ -43,6 +43,9 @@ Bugfix
* Fix runtime error in `mbedtls_platform_entropy_poll()` when run * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
through qemu user emulation. Reported and fix suggested by randombit through qemu user emulation. Reported and fix suggested by randombit
in #1212. Fixes #1212. in #1212. Fixes #1212.
* Fix an unsafe bounds check when restoring an SSL session from a ticket.
This could lead to a buffer overflow, but only in case ticket authentication
was broken. Reported and fix suggested by Guido Vranken in #659.
= mbed TLS 2.14.0 branch released 2018-11-19 = mbed TLS 2.14.0 branch released 2018-11-19

14
library/ssl_ticket.c
View File

@ -188,9 +188,9 @@ static int ssl_save_session( const mbedtls_ssl_session *session,
if( left < 3 + cert_len ) if( left < 3 + cert_len )
return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
*p++ = (unsigned char)( cert_len >> 16 & 0xFF ); *p++ = (unsigned char)( ( cert_len >> 16 ) & 0xFF );
*p++ = (unsigned char)( cert_len >> 8 & 0xFF ); *p++ = (unsigned char)( ( cert_len >> 8 ) & 0xFF );
*p++ = (unsigned char)( cert_len & 0xFF ); *p++ = (unsigned char)( ( cert_len ) & 0xFF );
if( session->peer_cert != NULL ) if( session->peer_cert != NULL )
memcpy( p, session->peer_cert->raw.p, cert_len ); memcpy( p, session->peer_cert->raw.p, cert_len );
@ -215,14 +215,14 @@ static int ssl_load_session( mbedtls_ssl_session *session,
size_t cert_len; size_t cert_len;
#endif /* MBEDTLS_X509_CRT_PARSE_C */ #endif /* MBEDTLS_X509_CRT_PARSE_C */
if( p + sizeof( mbedtls_ssl_session ) > end ) if( sizeof( mbedtls_ssl_session ) > (size_t)( end - p ) )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
memcpy( session, p, sizeof( mbedtls_ssl_session ) ); memcpy( session, p, sizeof( mbedtls_ssl_session ) );
p += sizeof( mbedtls_ssl_session ); p += sizeof( mbedtls_ssl_session );
#if defined(MBEDTLS_X509_CRT_PARSE_C) #if defined(MBEDTLS_X509_CRT_PARSE_C)
if( p + 3 > end ) if( 3 > (size_t)( end - p ) )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
cert_len = ( p[0] << 16 ) | ( p[1] << 8 ) | p[2]; cert_len = ( p[0] << 16 ) | ( p[1] << 8 ) | p[2];
@ -236,7 +236,7 @@ static int ssl_load_session( mbedtls_ssl_session *session,
{ {
int ret; int ret;
if( p + cert_len > end ) if( cert_len > (size_t)( end - p ) )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
session->peer_cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ); session->peer_cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
@ -247,7 +247,7 @@ static int ssl_load_session( mbedtls_ssl_session *session,
mbedtls_x509_crt_init( session->peer_cert ); mbedtls_x509_crt_init( session->peer_cert );
if( ( ret = mbedtls_x509_crt_parse_der( session->peer_cert, if( ( ret = mbedtls_x509_crt_parse_der( session->peer_cert,
p, cert_len ) ) != 0 ) p, cert_len ) ) != 0 )
{ {
mbedtls_x509_crt_free( session->peer_cert ); mbedtls_x509_crt_free( session->peer_cert );
mbedtls_free( session->peer_cert ); mbedtls_free( session->peer_cert );