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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox fetch() API CORS Access Control Flaw Lets Remote Users Obtain Potentially Sensitive Information on the Target System
SecurityTracker Alert ID:  1033820
SecurityTracker URL:  http://securitytracker.com/id/1033820
CVE Reference:   CVE-2015-7184   (Links to External Site)
Date:  Oct 16 2015
Impact:   Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 41.0.2
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can obtain potentially sensitive information on the target system.

The fetch() API does not properly implement the Cross-Origin Resource Sharing (CORS) specification. A remote user can create specially crafted HTML that, when loaded by the target user, will access potentially sensitive information from other origins on the target system.

Abdulrahman Alqabandi and Ben Kelly separately reported this vulnerability.

Impact:   A remote user can obtain potentially sensitive information from other origins on the target system.
Solution:   The vendor has issued a fix (41.0.2).

The vendor's advisory is available at:

https://www.mozilla.org/en-US/security/advisories/mfsa2015-115/

Vendor URL:  www.mozilla.org/en-US/security/advisories/mfsa2015-115/ (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.
Oct 16 2015 (Ubuntu Issues Fix) Mozilla Firefox fetch() API CORS Access Control Flaw Lets Remote Users Obtain Potentially Sensitive Information on the Target System
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, and 15.04.



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