Quiksoft EasyMail AddAttachment Method ActiveX Control Buffer Overflow Exploit

This module exploits a vulnerability in emsmtp.dll included in the Quiksoft EasyMail application. The exploit is triggered when the AddAttachment() method processes a long string argument resulting in a stack-based buffer overflow. This module runs a web server waiting for vulnerable clients (Internet Explorer) to connect to it. When the client connects, it will try to install an agent by exploiting this vulnerability.