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Fixed potential heap buffer overflow on large hostname setting

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This commit is contained in:
Paul Bakker 2013-08-19 14:25:29 +02:00
parent 694d3aeb47
commit 75c1a6f97c
1 changed files with 4 additions and 0 deletions
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4
library/ssl_tls.c
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@ -3220,6 +3220,10 @@ int ssl_set_hostname( ssl_context *ssl, const char *hostname )
return( POLARSSL_ERR_SSL_BAD_INPUT_DATA ); return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
ssl->hostname_len = strlen( hostname ); ssl->hostname_len = strlen( hostname );
if( ssl->hostname_len + 1 == 0 )
return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
ssl->hostname = (unsigned char *) polarssl_malloc( ssl->hostname_len + 1 ); ssl->hostname = (unsigned char *) polarssl_malloc( ssl->hostname_len + 1 );
if( ssl->hostname == NULL ) if( ssl->hostname == NULL )