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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox HTTP Redirect Bug Lets Remote Users Bypass Cross-Origin Restrictions on the Target System
SecurityTracker Alert ID:  1037353
SecurityTracker URL:  http://securitytracker.com/id/1037353
CVE Reference:   CVE-2016-9078   (Links to External Site)
Date:  Nov 29 2016
Impact:   Disclosure of user information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 49, 50
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can bypass security controls on the target system.

A remote user can return a specially crafted HTTP redirection to a 'data:' URL to bypass same-origin controls and allow the referring domain to access data in the 'data:' URL domain.

Alexander Infuhr reported these vulnerabilities.

Impact:   A remote user can bypass same-origin restrictions to potentially read or write information from 'data:' URLs.
Solution:   The vendor has issued a fix (50.0.1).

The vendor advisory is available at:

https://www.mozilla.org/en-US/security/advisories/mfsa2016-91/

Vendor URL:  www.mozilla.org/en-US/security/advisories/mfsa2016-91/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Dec 1 2016 (Ubuntu Issues Fix) Mozilla Firefox HTTP Redirect Bug Lets Remote Users Bypass Cross-Origin Restrictions on the Target System
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, 16.04 LTS, and 16.10.



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