full-disclosure - Linkedin Social Network - Persistent Web Vulnerability

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Date: Sun, 09 Jun 2013 02:39:28 +0100
From: Vulnerability Lab <research@...nerability-lab.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Linkedin Social Network - Persistent Web
	Vulnerability

Title:
======
Linkedin Social Network - Persistent Web Vulnerability


Date:
=====
2013-06-08


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=962

Linkedin Security Ticket ID: 130429-005211


VL-ID:
=====
962


Common Vulnerability Scoring System:
====================================
3.8


Introduction:
=============
LinkedIn is a social networking website for people in professional occupations. Founded in December 2002 and launched on May 5, 2003, 
it is mainly used for professional networking. As of January 2013, LinkedIn reports more than 200 million acquired users in more than 
200 countries and territories.

The site is available in English, French, German, Italian, Portuguese, Spanish, Dutch, Swedish, Romanian, Russian, Turkish, Japanese, 
Czech, Polish, Korean, Indonesian, and Malay. Quantcast reports LinkedIn has 21.4 million monthly unique U.S. visitors and 47.6 million 
globally.[10] In June 2011, LinkedIn had 33.9 million unique visitors, up 63 percent from a year earlier and surpassing MySpace. 
LinkedIn filed for an initial public offering in January 2011 and traded its first shares on May 19, 2011, under the NYSE symbol \\\"LNKD\\\".

(Copy of the Homepage: http://en.wikipedia.org/wiki/LinkedIn )


Abstract:
=========
An independent Vulnerability Laboratory Researcher (Ismail Kaleem) discovered a persistent vulnerability in the Linkedin Social Network Community.


Report-Timeline:
================
2013-04-28:	Researcher Notification & Coordination
2013-04-29:	Vendor Notification
2013-08-30:	Vendor Response/Feedback
2013-05-23:	Vendor Fix/Patch
2013-06-08:	Public Disclosure


Status:
========
Published


Affected Products:
==================
Linkedin
Product: Social Network Application 2013 Q2


Exploitation-Technique:
=======================
Remote


Severity:
=========
Medium


Details:
========
A persistent script code injection web vulnerability is detected in the groups name add function of the linkedin social network application.
The web-server does not use HTTP only cookies so it is possible for an attacker to hijackcookies or inject frames with malicious context or malware.



Solution:
=========
2013-05-23:	Vendor Fix/Patch


Risk:
=====
The security risk of the persistent web vulnerability in the social network is estimated as medium(+).


Credits:
========
Ismail Kaleem - Senior Security Developer | IT Security Department
National Centre for Information Technology | Republic of Maldives


Disclaimer:
===========
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may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases 
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