e-Courier CMS "UserGUID" Cross-Site Scripting Vulnerability

Secunia ID	SA37240
CVE-ID	CVE-2009-3901, CVE-2009-3905
Release Date	04 Nov 2009
Last Change	10 Nov 2009
Criticality	Less Critical
Solution Status	Unpatched
Software	e-Courier CMS
Where	From remote
Impact	Cross-Site Scripting Cross-Site Scripting vulnerabilities allow a third party to manipulate the content or behaviour of a web application in a user's browser, without compromising the underlying system. Different Cross-Site Scripting related vulnerabilities are also classified under this category, including "script insertion" and "cross-site request forgery". Cross-Site Scripting vulnerabilities are often used against specific users of a website to steal their credentials or to conduct spoofing attacks.
Description	A vulnerability has been reported in e-Courier CMS, which can be exploited by malicious people to conduct cross-site scripting attacks. Input passed via the "UserGUID" parameter to home/index.asp, home/Wizard_tracking.asp, home/wizard_oe2.asp, home/your-register.asp, home/main-whyregister.asp, home/your.asp, and potentially other pages is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
Solution	Edit the source code to ensure that input is properly sanitised.
Reported by	BugsNotHugs Additional information about affected pages provided by an anonymous person.