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TITLE:
PhpWebGallery "author" Script Insertion

SECUNIA ADVISORY ID:
SA26908

VERIFY ADVISORY:
http://secunia.com/advisories/26908/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
PhpWebGallery 1.x
http://secunia.com/product/6487/

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

Input passed to the "author" parameter in picture.php is not properly
sanitised before being stored. This can be exploited to insert
arbitrary HTML and script code, which is executed in a user's browser
session in context of an affected site when the malicious data is
viewed.

Successful exploitation requires that "Comments for all" is enabled.

The vulnerability is confirmed in version 1.7.0. Other versions may
also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
nights_shadow

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