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TITLE:
iSupport Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA37726

VERIFY ADVISORY:
http://secunia.com/advisories/37726/

DESCRIPTION:
Multiple vulnerabilities have been reported in iSupport, which can be
exploited by malicious users to conduct script insertion attacks and
by malicious people to disclose sensitive information or conduct
cross-site scripting attacks.

1) Input passed via the "5" or "9" form field in ticket_function.php
(when "action" is set to "post") is not properly sanitised before
being used. This can be exploited to insert arbitrary HTML and script
code, which will be executed in a user's browser session in context of
an affected site when the malicious data is being viewed.

2) Input passed to the "include_file" parameter in index.php is not
properly sanitised before being used to include files. This can be
exploited to include arbitrary files from local resources via
directory traversal sequences.

3) Input passed to the "which" parameter in index.php (when
"include_file" is set to "knowledgebase_list.php" and "x_category" is
set to "PARENT_CATEGORY") and to the "which" parameter in function.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.

The vulnerabilities are reported in version 1.8. Other versions may
also be affected.

SOLUTION:
Edit the source code to ensure input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
Stink and Essandre

ORIGINAL ADVISORY:
http://packetstormsecurity.org/0912-exploits/isupport-lfixss.txt

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