PayPal Payflow Pro [New Version] v0.3 is vulnerable to an SSL man in the middle attack as described in CVE-2012-5796. To fix it, edit paypal_payflow_pro/catalog/includes/modules/payment/paypal_payflow_pro.php and replace the OLD line with the NEW line.
OLD: curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
OLD: curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);