Microsoft Edge: Increased Privileges -- Remote with User Interaction

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.0067
         Microsoft Security Bulletin MS17-001: Security Update for
                         Microsoft Edge (3214288)
                              10 January 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Edge
Publisher:         Microsoft
Operating System:  Windows 10
                   Windows Server 2016
Impact/Access:     Increased Privileges -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-0002  

Original Bulletin: 
   https://technet.microsoft.com/en-us/library/security/MS17-001

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Microsoft Security Bulletin MS17-001: Security Update for Microsoft Edge
(3214288)

Severity: Important

Executive Summary

This security update resolves a vulnerability in Microsoft Edge. This
vulnerability could allow elevation of privilege if a user views a
specially crafted webpage using Microsoft Edge. An attacker who successfully
exploited the vulnerability could elevate privileges in affected versions
of Microsoft Edge.

This security update is rated Important for Microsoft Edge on Windows 10
and Windows Server 2016.

Affected Software

Windows 10
Windows Server 2016

Vulnerability Information

Microsoft Edge Elevation of Privilege Vulnerability- CVE-2017-0002

An elevation of privilege vulnerability exists when Microsoft Edge does
not properly enforce cross-domain policies with about:blank, which could
allow an attacker to access information from one domain and inject it into
another domain. An attacker who successfully exploited this vulnerability
could elevate privileges in affected versions of Microsoft Edge.

In a web-based attack scenario, an attacker could host a website that is
used to attempt to exploit the vulnerability. In addition, compromised
websites and websites that accept or host user-provided content could
contain specially crafted content that could exploit the vulnerability. In
all cases, however, an attacker would have no way to force users to view the
attacker-controlled content. Instead, an attacker would have to convince
users to take action. For example, an attacker could trick users into
clicking a link that takes them to the attacker's site.

The update addresses the vulnerability by assigning a unique origin to
top-level windows that contain Data URLs.
The following table contain a link to the standard entry for each
vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability title					CVE number	Publicly disclosed	Exploited

Microsoft Edge Elevation of Privilege Vulnerability	CVE-2017-0002	Yes			No

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