Check Point Advisories

Microsoft IIS WebDAV Request Source Code Disclosure

Check Point Reference: CPAI-2005-290
Date Published: 9 Dec 2009
Severity: Critical
Last Updated: Monday 12 June, 2017
Source:
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description The Internet Information Server (IIS) is a collection of Internet services packaged with several versions of the Windows operating system. IIS includes a Web server service that is capable of serving static, as well as dynamic content. The Web server is equipped with the Active Server Pages (ASP) technology which is utilized for dynamic content generation. A source code disclosure vulnerability exists in the Microsoft Internet Information Server (IIS). The flaw is specific to the language and locale setting, and the file system type on which scripts are stored. This vulnerability may allow a user to download the source code of scripts that are meant to execute on the server side, thereby disclosing potentially sensitive information. The target will not exhibit any unusual behavior but a successful exploitation of this vulnerability will result in the source code of script files being served to the client as opposed to the output of the requested script.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Microsoft IIS WebDAV Request Source Code Disclosure protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  Microsoft IIS WebDAV Request Source Code Disclosure

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