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TITLE:
ASPScriptz Guest Book "submit.asp" Script Insertion Vulnerabilities

SECUNIA ADVISORY ID:
SA20416

VERIFY ADVISORY:
http://secunia.com/advisories/20416/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
ASPScriptz Guest Book 2.x
http://secunia.com/product/10347/

DESCRIPTION:
omnipresent has discovered some vulnerabilities in ASPScriptz Guest
Book, which can be exploited by malicious people to conduct script
insertion attacks.

Input passed to the "GBOOK_UNAME", "GBOOK_EMAIL", "GBOOK_CITY",
"GBOOK_COU", "GBOOK_WWW", and "GBOOK_MESS" form field parameters in
submit.asp 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 a malicious entry is viewed.

The vulnerabilities have been confirmed in version 2.0. Other
versions may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
omnipresent

ORIGINAL ADVISORY:
http://colander.altervista.org/advisory/ASzGB.txt

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About:
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