Paypal Payment Gateway in XT Commerce Shop Vers. 3.X is not working

Due to a security issue within the  SSL3 protcol Paypal stops the support on 03/12/2014. As a result the payment module in XT Commerce shops will not work any more.

Fix:

/includes/modules/payment/paypal.php

Look for:

curl_setopt($ch, CURLOPT_POSTFIELDS, $dataString."&");

Add after:

curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1 );

curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, 'TLSv1');