CVE-2016-10033

La función mailSend en el transporte isMail en PHPMailer en versiones anteriores a 5.2.18 podrían permitir a atacantes remotos pasar parámetros extra al comando mail y consecuentemente ejecutar código arbitrario a través de una \" (barra invertida comillas dobles) en una propiedad Sender manipulada.

Dawid Golunski discovered that PHPMailer was not properly escaping user input data used as arguments to functions executed by the system shell. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 ESM. It was discovered that PHPMailer was not properly escaping characters in certain fields of the code_generator.php example code. An attacker could possibly use this issue to conduct cross-site scripting attacks. This issue was only fixed in Ubuntu 16.04 ESM and Ubuntu 18.04 ESM.

PHPMailer contains a command injection vulnerability because it fails to sanitize user-supplied input. Specifically, this issue affects the 'mail()' function of 'class.phpmailer.php' script. An attacker can exploit this issue to execute arbitrary code within the context of the application. Failed exploit attempts will result in a denial-of-service condition.