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Add bounds check before signature
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@ -2478,6 +2478,13 @@ static int ssl_parse_server_key_exchange( mbedtls_ssl_context *ssl )
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/*
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/*
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* Read signature
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* Read signature
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*/
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*/
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if( p > end - 2 )
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{
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MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message" ) );
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mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
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MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
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return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
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}
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sig_len = ( p[0] << 8 ) | p[1];
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sig_len = ( p[0] << 8 ) | p[1];
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p += 2;
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p += 2;
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