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Secunia Network Software Inspector 2.0 (NSI) - Public Beta

The Public Beta has ended. Thanks to all that participated.

Learn more:
http://secunia.com/network_software_inspector_2/

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TITLE:
BlogPHP Script Insertion and Cross-Site Scripting

SECUNIA ADVISORY ID:
SA30165

VERIFY ADVISORY:
http://secunia.com/advisories/30165/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
BlogPHP 2.x
http://secunia.com/product/17437/

DESCRIPTION:
David Sopas Ferreira has discovered two vulnerabilities in BlogPHP,
which can be exploited by malicious people to conduct cross-site
scripting and script insertion attacks.

1) Input passed to the "user" parameter in index.php (when "act" is
set to "sendmessage") 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.

2) Input passed to the "username" parameter in index.php when
registering a new user 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.

NOTE: A security bypass vulnerability has also been reported.

The vulnerabilities are 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:
David Sopas Ferreira

ORIGINAL ADVISORY:
http://www.davidsopas.com/soapbox/blogphp.txt

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