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SilverStripe(R) Information Exposure Through Query Strings in GET Request (CWE-598)
From: "Rustein, Fara Denise \(LATCO - Buenos Aires\)" <frustein () DELOITTE com>
Date: Thu, 1 Aug 2013 13:10:43 +0000

SilverStripe(R) Information Exposure Through Query Strings in GET Request (CWE-598)

- CVE: CVE-2013-2653
- CWE: CWE-598
- Deloitte Argentina Advisory Code: DTTAR-20130002

- Vendor Status: CONFIRMED
- Vendor Disclosure Date: May, 8th, 2013.
- Public Disclosure Date: August, 1st, 2013.
- Vendors Affected: SilverStripe - http://www.silverstripe.org/
- Systems Affected: SilverStripe CMS v3.0.3

- Description: It was observed that the SilverStripe CMS application is susceptible to information exposure through 
query strings in forced GET requests. The objective for a malicious user would be to send a specially crafted URL to a 
valid user, in an attempt to trick them into clicking this malicious link and execute the action in the victim’s 
context. A malicious user may craft a website requesting email and password, where inside an iframe an automatic login 
to the real website could be executed and go by unnoticed.
- PoC:    
                NOTE: A single click to the URL above, allows access to the admin section of SilverStripe, redirecting 
the user to http://<IP:Port>/admin/pages
- Vulnerability Status: in process of being released.
- Patch Available: https://github.com/chillu/silverstripe-framework/commit/3e88c98ca513880e2b43ed7f27ade17fef5d9170
- Fix: Will be available on 3.1 release.

- Related Links: Deloitte Argentina - www.deloitte.com/ar
- Credits: This vulnerability was found by Fara Rustein from Deloitte Argentina (https://twitter.com/FaraRustein).
- Feedback: If you have any questions, comments, concerns, updates or suggestions please feel free to send them to: 
frustein () deloitte com

Fara Rustein
Senior Consultant, Cyber Security - ERS
Deloitte & Co. S.A.
Tte. Gral.J.D.Perón 646 - C1038AAN Buenos Aires Argentina
Main: +54 11 4320 2700 ext. 8350 | Fax: +54 11 4320 4071
frustein () deloitte com | www.deloitte.com
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