Full Disclosure mailing list archives
Linkedin's Clickjacking & Open Url Redirection Vulnerabilities
From: Ajay Singh Negi <ajaysinghnegi01 () gmail com>
Date: Sun, 16 Sep 2012 00:29:07 +0530
Linkedin's Clickjacking & Open Url Redirection Vulnerabilities # Vulnerability Title: Secondary Email Addition & Deletion Via Click Jacking in Linkedin # Website Link: [Tried on Indian version] # Found on: 06/08/2012 # Author: Ajay Singh Negi # Version: [All language versions would be vulnerable] # Tested on: [Indian version] # Reported On: 07/08/2012 # Status: Fixed # Patched On: 10/09/2012 # Public Release: 15/09/2012 *Summary* A Clickjacking vulnerability existed on Linkedin that allowed an attacker to add or delete a secondary email and can also make existing secondary email as primary email by redressing the manage email page. *Details* Linkedin manage email page (a total of 1 page) was lacking X-FRAME-OPTIONS in Headers and Frame-busting javascript measures to prevent framing of the pages. So the manage email page could be redressed to 'click-jack' Linkedin users. Below I have mentioned the vulnerable Url. *1. Click Jacking Vulnerable Url:* https://www.linkedin.com/settings/manage-email?goback=.nas_*1_*1_*1<http://www.google.com/url?q=https%3A%2F%2Fwww.linkedin.com%2Fsettings%2Fmanage-email%3Fgoback%3D.nas_*1_*1_*1&sa=D&sntz=1&usg=AFQjCNGkjluV_mUQz-l0-O4AE2x6J5lKqA> # Vulnerability Title: Open Url Redirection in Linkedin # Website Link: [Tried on Indian version] # Found on: 05/08/2012 # Author: Ajay Singh Negi # Version: [All language versions would be vulnerable] # Tested on: [Indian version] # Reported On: 06/08/2012 # Status: Fixed # Patched On: 07/09/2012 # Public Release: 15/09/2012 *Summary* Open Url Redirection using which an attacker can redirect any Linkedin user to any malicious website. Below I have mentioned the vulnerable Url. *Original Open Url Redirection Vulnerable Url:* https://help.linkedin.com/app/utils/log_error/et/0/ec/7/callback/https%3A%2F%2Fhelp.linkedin.com%2Fapp%2Fhome%2Fh%2Fc%2Ffrom_auth%2Ftrue *Crafted Open Url Redirection Vulnerable Url:* https://help.linkedin.com/app/utils/log_error/et/0/ec/7/callback/http%3A%2F%2Fattacker.in<http://www.google.com/url?q=https%3A%2F%2Fhelp.linkedin.com%2Fapp%2Futils%2Flog_error%2Fet%2F0%2Fec%2F7%2Fcallback%2Fhttp%253A%252F%252Fattacker.in&sa=D&sntz=1&usg=AFQjCNHwFbje3XOKHpKQ48bGat-sG-MjCQ> POC can be found on below mentioned Url: http://computersecuritywithethicalhacking.blogspot.in/2012/09/linkedins-clickjacking-open-url.html
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- Linkedin's Clickjacking & Open Url Redirection Vulnerabilities Ajay Singh Negi (Sep 15)