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I currently have a Web/FTP server that is running Windows 2008R2 standard that is getting monitored for ISP traffic and currently they are seeing <br />
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'50744 VID43969 PHP php-cgi Query String Parameter Parsing Exploit Attempt Inbound (CVE-2012-1823)' they are saying that one or more external hosts are attempting to discover whether one of your Internet-facing devices is vulnerable to either the PHP-CGI argument injection (CVE-2012-1823) or the PHP-CGI improper handling of query strings (CVE-2012-2311) vulnerabilities. Successful exploitation of these vulnerabilities may result in information disclosure or remote code execution. <br />
I am not sure what this means and how to protect the system.
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I currently have a Web/FTP server that is running Windows 2008R2 standard that is getting monitored for ISP traffic and currently they are seeing 

'50744 VID43969 PHP php-cgi Query String Parameter Parsing Exploit Attempt Inbound (CVE-2012-1823)' they are saying that one or more external hosts are attempting to discover whether one of your Internet-facing devices is vulnerable to either the PHP-CGI argument injection (CVE-2012-1823) or the PHP-CGI improper handling of query strings (CVE-2012-2311) vulnerabilities. Successful exploitation of these vulnerabilities may result in information disclosure or remote code execution. 
I am not sure what this means and how to protect the system.

PHP php-cgi Query String Parameter Parsing Exploit Attempt

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

A web server refers to the software that helps to deliver web content that can be accessed either through the Internet or through an intranet. The primary function of a web server is to store, process and deliver web pages to clients. The communication between client and server takes place using the Hypertext Transfer Protocol (HTTP). The most common use of web servers is to host websites, but there are other uses such as gaming, data storage, running enterprise applications, handling email, FTP, etc.