PrestaShop is an open-source e-commerce solution. With more than 270,000 running instances it is one of the top 10 most used content management systems in the Web. Additionally to the classical software download, PrestaShop Ready offers to rent an online shop and to get administrative access to pre-hosted PrestaShop instances. From the perspective of attackers these e-commerce systems are very attractive targets because thousands of customers enter sensitive payment information.
Our leading security analysis solution RIPS detected a highly critical PHP object injection vulnerability in PrestaShop that allows to execute arbitrary code on any installation with version <= 126.96.36.199. In this technical blog post we present the vulnerability and the exploitation technique that could have allowed attackers to compromise PrestaShop servers (CVE-2018-20717). This posed a serious risk for the PrestaShop Ready cloud. A fix was released and administrators of outdated PrestaShop installations are highly encouraged to update.Read More