[SCAN Associates Security Advisory] vbulletin 3.0.6 and below php code injection

From: pokley (pokleyzz_at_scan-associates.net)
Date: 02/21/05

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    Date: Mon, 21 Feb 2005 11:01:02 +0800
To: "bugtraq@securityfocus.com" <bugtraq@securityfocus.com>

    Summary: vbulletin 3.0.6 and below php code injection

    Description
    ===========
    vBulletin is a powerful, scalable and fully customizable forums package
    for your web site. It has been written using the Web's quickest-growing
    scripting language; PHP, and is complimented with a highly efficient and
    ultra fast back-end database engine built using MySQL.

    Details
    =======
    User may inject php code using "nested variable" into template name when
    "Add Template Name in HTML Comments" is enable. This option is not enable
    by default and is not recomended by vbulletin for production environment.
    The problem occur when user may supply partial template name through
    misc.php.

    Workaround
    ==========
    Disable "Add Template Name in HTML Comments" option.

    Proof of concept
    ================
    http://site.com/misc.php?do=page&template={${phpinfo()}}

    Vendor Response
    ===============
    17th February 2005 - Vulnerability found
    18th February 2005 - vbulletin developer informed
    19th February 2005 - vbulletin developer confirmed
    20th February 2005 - Fix Available from vbulletin team

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