Cumulative Security Update for Microsoft Edge (MS15-113)

ITS Advisory Number: 
Date(s) Issued: 
Tuesday, November 10, 2015
Cumulative Security Update for Microsoft Edge (MS15-113)

This security update resolves vulnerabilities in Microsoft Edge.  Microsoft Edge is a web browser included with Windows 10. The most severe of the vulnerabilities could allow information disclosure if a user views a specially crafted webpage using Microsoft Edge. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Systems Affected: 
  • Microsoft Windows 10
Large and medium government entities: 
Small government entities: 
Large and medium business entities: 
Small business entities: 
Home Users: 

Vulnerabilities exist in Microsoft Edge due to the way objects in memory and the way the browser handles Address Space Layout Randomization (ASLR). The vulnerabilities are as follows:

  • Microsoft Browser Memory Corruption Vulnerabilities [CVE-2015-6064, CVE-2015-6073, CVE-2015-6078]
  • Microsoft Browser ASLR Bypass: [CVE-2015-6088]

These vulnerabilities could provide an attacker with information to further compromise the device or allow disabled scripts to run with the wrong security context. Successful exploitation of these vulnerabilities could result in an attacker gaining the same rights as the current user. If the current user is logged on with administrative user rights an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

  • After appropriate testing, apply appropriate patches provided by Microsoft to vulnerable systems.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit untrusted websites or follow links provided by unknown or untrusted sources.