Check Point Advisories

WSX Files (CVE-2008-2253)

Vulnerability
Protection

Check Point Reference:	SBP-2008-10
Date Published:	9 Sep 2008
Severity:	N/A
Last Updated:	Tuesday 19 June, 2012
Source:
Industry Reference:	CVE-2008-2253
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	A server-side playlist (SSPL) is a list that identifies what content is played for a client, the time at which it is played, and the order in which it is played. WSX is a document used as SSPL by Windows Media server. A remote code execution vulnerability was reported in Windows Media Player 11. The vulnerability is due to a buffer overflow condition in Windows Media Player that fails to properly handle audio-only files streamed from a Windows Media Server with different sampling rates in a server-side playlist (SSPL). A remote attacker could trigger this flaw by convincing a victim to open a specially crafted WSX file. Successful exploitation of this issue may allow the attacker to take complete control of the affected system. There are cases in which certain traffic, although not intended for malicious use, is very unsafe, since it may transfer shellcode which is undetectable by IPS.

Protection Overview

This protection will detect and block the transferring of WSX files over HTTP.

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 / R71 / R70 / R65

In the IPS tab, click Protections and find the WSX Files protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Content Protection Violation.
Attack Information: WSX file