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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox Use-After Free Memory Error in nsTArray_base::SwapArrayElements Lets Remote Users Execute Arbitrary Code and Web Cache Bug Lets Remote Users View Potentially Sensitive Information
SecurityTracker Alert ID:  1037077
SecurityTracker URL:  http://securitytracker.com/id/1037077
CVE Reference:   CVE-2016-5287, CVE-2016-5288   (Links to External Site)
Date:  Oct 21 2016
Impact:   Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 48.x, 49.x
Description:   Two vulnerabilities were reported in Mozilla Firefox. A remote user can execute arbitrary code on the target system. A remote user can obtain potentially sensitive information on the target system.

A remote user can create specially crafted content that, when loaded by the target user, will trigger a use-after-free memory error in nsTArray_base::SwapArrayElements() and execute arbitrary code on the target user's system [CVE-2016-5287]. Versions 49.x are affected.

Philipp reported this vulnerability.

A remote user can create specially crafted content that, when loaded by the target user, will view potentially sensitive URL and page content from the HTTP cache [CVE-2016-5288]. Systems with Electrolysis (e10s) disabled are affected. Versions 48.x and 49.x are affected.

Developers at Cliqz.com reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.

A remote user can obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix (49.0.2).

The vendor advisory is available at:

https://www.mozilla.org/en-US/security/advisories/mfsa2016-87/

Vendor URL:  www.mozilla.org/en-US/security/advisories/mfsa2016-87/ (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 28 2016 (Ubuntu Issues Fix) Mozilla Firefox Use-After Free Memory Error in nsTArray_base::SwapArrayElements Lets Remote Users Execute Arbitrary Code and Web Cache Bug Lets Remote Users View Potentially Sensitive Information
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, 16.04 LTS, and 16.10.



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