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TITLE:
Webmatic Cross-Site Scripting and Script Insertion Vulnerabilities

SECUNIA ADVISORY ID:
SA39035

VERIFY ADVISORY:
http://secunia.com/advisories/39035/

DESCRIPTION:
Lostmon has discovered some vulnerabilities in Webmatic, which can be
exploited by malicious users to conduct script insertion attacks and
by malicious people to conduct script insertion and cross-site
scripting attacks.

1) Input passed via the "subject" and "message" parameters to
index.php (when "stage" is set to "1", "section" is set to "100", and
"action" is set to "564") is not properly sanitised before being
displayed to the user. 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 via the "title" and "topic" parameters to index.php
(when "stage" is set to "1", "section" is set to "17", and "action"
is set to "478") is not properly sanitised before being displayed to
the user. 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.

3) Input passed via the "title" parameter to index.php (when "stage"
is set to "1", "section" is set to "5", and "action" is set to "277")
is not properly sanitised before being displayed to the user. 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.

4) Input passed via the "title" and "banner_alt" parameters to
index.php (when "stage" is set to "1", "section" is set to "3", and
"action" is set to "533") is not properly sanitised before being
displayed to the user. 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.

5) Input passed via the "search" parameter to index.php (when
"action" is set to "30" and "pageID" is set) 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.

6) Input passed via the "nickname" parameter to index.php (when
"section" is set to 14 and "pageID"  is set for to link to chatrooms)
is not properly sanitised before being displayed to the user. 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.

7) Input passed via the "title" parameter to index.php (when
"section" is set to 14 and "pageID" is set for to link to forums) is
not properly sanitised before being displayed to the user. 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.

The vulnerabilities are confirmed in version 3.0.3. Other versions
may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
Lostmon

ORIGINAL ADVISORY:
http://lostmon.blogspot.com/2010/03/webmatic-303-multiple-crosssite.html

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/advisories/about_secunia_advisories/


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