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Added max length checking of hostname

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This commit is contained in:
Simon Butcher 2015-09-29 23:27:20 +01:00
parent 21823f9a69
commit c988f32add
2 changed files with 5 additions and 0 deletions
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2
include/polarssl/ssl.h
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@ -198,6 +198,8 @@
#endif /* POLARSSL_SSL_PROTO_TLS1_1 */
#endif /* POLARSSL_SSL_PROTO_TLS1_2 */
#define SSL_MAX_HOST_NAME_LEN 255 /*!< Maximum host name defined in RFC 1035 */
/* RFC 6066 section 4, see also mfl_code_to_length in ssl_tls.c
* NONE must be zero so that memset()ing structure to zero works */
#define SSL_MAX_FRAG_LEN_NONE 0 /*!< don't use this extension */

3
library/ssl_tls.c
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@ -4148,6 +4148,9 @@ int ssl_set_hostname( ssl_context *ssl, const char *hostname )
if( ssl->hostname_len + 1 == 0 )
return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
if( ssl->hostname_len > SSL_MAX_HOST_NAME_LEN )
return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
ssl->hostname = polarssl_malloc( ssl->hostname_len + 1 );
if( ssl->hostname == NULL )