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Secunia integrated with Microsoft WSUS 
http://secunia.com/blog/71/



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TITLE:
WebCalendar Cross-Site Scripting and Request Forgery Vulnerabilities

SECUNIA ADVISORY ID:
SA38222

VERIFY ADVISORY:
http://secunia.com/advisories/38222/

DESCRIPTION:
Russ McRee has discovered some vulnerabilities in WebCalendar, which
can be exploited by malicious people to conduct cross-site scripting
and request forgery attacks.

1) Input passed to the "tab" parameter in users.php 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.

2) Input appended to the URL after day.php, month.php, and week.php
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.

3) The application allows users to perform certain actions via HTTP
requests without performing any validity checks to verify the
requests. This can be exploited to e.g. delete an event, ban an IP
address from posting, or change the administrative password if a
logged-in administrative user visits a malicious web site.

The vulnerabilities are confirmed in version 1.2.0. Other versions
may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised. Do
not browse untrusted websites or follow untrusted links while logged
in to the application.

PROVIDED AND/OR DISCOVERED BY:
Reported by Russ McRee via Secunia.

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