TITLE:
Xeobook Guestbook Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA17159

VERIFY ADVISORY:
http://secunia.com/advisories/17159/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Xeobook 0.x
http://secunia.com/product/5846/

DESCRIPTION:
rjonesx has discovered a vulnerability in Xeobook, which can be
exploited by malicious people to conduct script insertion attacks.

Input passed to various fields when signing the guestbook isn't
properly sanitised before being used. This can be exploited to inject
arbitrary script code, which will be executed in a user's browser
session in context of an affected site when the malicious guestbook
entry is viewed.

Example:
<b onmouseover=[code]>text</b>

The vulnerability has been confirmed in version 0.93. Other versions
may also be affected.

SOLUTION:
Configure Xeobook to not allow any HTML tags:
admin.php -> [2] allowed tags

PROVIDED AND/OR DISCOVERED BY:
rjonesx

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