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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
http://corporate.secunia.com/how_to_buy/15/?r=l

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TITLE:
JAB Guest Book PHP Command Injection Vulnerabilities

SECUNIA ADVISORY ID:
SA23216

VERIFY ADVISORY:
http://secunia.com/advisories/23216/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
JAB Guest Book
http://secunia.com/product/12806/

DESCRIPTION:
Some vulnerabilities have been reported in JAB Guest Book, which can
be exploited by malicious people to compromise a vulnerable system.

Input passed to the "topic", "author" and "message" parameter in
pbguestbook.php is not properly sanitised before being stored in a
PHP file. This can be exploited to inject arbitrary PHP commands,
which are executed when viewing a malicious guestbook entry.

The vulnerabilities are confirmed in a version downloaded 2006-12-05.

SOLUTION:
Use another product.

PROVIDED AND/OR DISCOVERED BY:
Reported as cross-site scripting vulnerability by NetJackal.

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About:
This Advisory was delivered by Secunia as a free service to help
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vulnerabilities.

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Definitions: (Criticality, Where etc.)
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Please Note:
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Secunia NEVER sends attached files with advisories.
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