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TITLE:
NPDS Local File Inclusion and Cross-Site Scripting Vulnerabilities

SECUNIA ADVISORY ID:
SA20523

VERIFY ADVISORY:
http://secunia.com/advisories/20523/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Exposure of system information, Exposure of
sensitive information

WHERE:
>From remote

SOFTWARE:
NPDS 5.x
http://secunia.com/product/5111/

DESCRIPTION:
DarkFig has discovered some vulnerabilities in NPDS, which can be
exploited by malicious people to conduct cross-site scripting attacks
and to disclose potentially sensitive information.

1) Input passed to the "ModPath" parameter in
"/modules/cluster-paradise/cluster-E.php" is not properly verified
before being used to include files. This can be exploited to include
arbitrary files from local resources.

Example:
http://[host]/modules/cluster-paradise/cluster-E.php?ModPath=[file]%00&key=a

Successful exploitation may require that the script is used on the
Windows platform, and requires that "register_globals" is enabled and
"magic_quotes_gpc" is disabled.

2) Input passed to the "nuke_url" parameter in /meta/meta.php, to the
"forum" parameter in viewforum.php, to the "post_id", "forum",
"topic", and "arbre" parameters in editpost.php, and to the "uname"
and "email" parameters in user.php 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.

The vulnerabilities have been confirmed in version 5.10. Other
versions may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
DarkFig

ORIGINAL ADVISORY:
http://www.acid-root.new.fr/advisories/npds510.txt

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