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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox PDF Viewer Same-Origin Bypass Lets Remote Users Obtain Potentially Sensitive Information on the Target System
SecurityTracker Alert ID:  1033216
SecurityTracker URL:  http://securitytracker.com/id/1033216
CVE Reference:   CVE-2015-4495   (Links to External Site)
Date:  Aug 7 2015
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 39.0.3
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can obtain files from the target user's system.

A remote user can create specially crafted content that, when loaded by the target user, will bypass same-origin policy and inject arbitrary JavaScript into the built-in PDF Viewer in the local file context and gain access to files on the target user's system with the privileges of the target user.

This vulnerability is being actively exploited.

Cody Crews reported this vulnerability.

Impact:   A remote user can obtain files on the target user's system.
Solution:   The vendor has issued a fix (39.0.3, ESR 38.1.1).

The vendor's advisory is available at:

https://www.mozilla.org/en-US/security/advisories/mfsa2015-78/

Vendor URL:  www.mozilla.org/en-US/security/advisories/mfsa2015-78/ (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.
Aug 7 2015 (Ubuntu Issues Fix) Mozilla Firefox PDF Viewer Same-Origin Bypass Lets Remote Users Obtain Potentially Sensitive Information on the Target System
Ubuntu has issued a fix for Ubuntu 12.04 LTS, 14.04 LTS, and 15.04.
Aug 8 2015 (Red Hat Issues Fix) Mozilla Firefox PDF Viewer Same-Origin Bypass Lets Remote Users Obtain Potentially Sensitive Information on the Target System
Red Hat has issued a fix for Red Hat Enterprise Linux 5, 6, and 7.
Aug 8 2015 (Oracle Issues Fix for Oracle Linux) Mozilla Firefox PDF Viewer Same-Origin Bypass Lets Remote Users Obtain Potentially Sensitive Information on the Target System
Oracle has issued a fix for Oracle Linux 5, 6, and 7.
Aug 11 2015 (CentOS Issues Fix) Mozilla Firefox PDF Viewer Same-Origin Bypass Lets Remote Users Obtain Potentially Sensitive Information on the Target System
CentOS has issued a fix for CentOS Linux 5, 6, and 7.



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