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AUSCERT External Security Bulletin Redistribution
ESB-2016.0074
MS16-002 Cumulative Security Update for Microsoft Edge
13 January 2016
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AusCERT Security Bulletin Summary
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Product: Microsoft Edge
Publisher: Microsoft
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-0024 CVE-2016-0003
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS16-002
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MS16-002 Cumulative Security Update for Microsoft Edge (3124904)
Document Metadata
Bulletin Number: MS16-002
Bulletin Title: Cumulative Security Update for Microsoft Edge
Severity: Critical
KB Article: 3124904
Version: 1.0
Published Date: January 12, 2016
Executive Summary
This security update resolves vulnerabilities in Microsoft Edge. The
vulnerabilities could allow remote code execution if a user views a specially
crafted webpage using Microsoft Edge. An attacker who successfully exploited
the 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.
Affected Software
Mirosoft Edge
Windows 10 for 32-bit Systems [1]
Windows 10 for x64-based Systems [1]
Windows 10 Version 1511 for 32-bit Systems [1] [2]
Windows 10 Version 1511 for x64-based Systems [1] [2]
[1] Windows 10 updates are cumulative. In addition to containing non-security
updates, they also contain all of the security fixes for all of the Windows
10-affected vulnerabilities shipping with the monthly security release. The
updates are available via the Microsoft Update Catalog.
[2] Although Windows 10 Version 1511 is not affected by the vulnerability
described in this bulletin, update 3124263 includes defense-in-depth updates
to help improve security-related features for Microsoft Edge. Customers
running Windows 10 Version 1511 should install the update for these
defense-in-depth updates.
Vulnerability Information
Microsoft Edge Memory Corruption Vulnerability CVE-2016-0003
A remote code execution vulnerability exists when Microsoft Edge improperly
accesses objects in memory. The vulnerability could corrupt memory in such a
way that an attacker could execute arbitrary code in the context of the
current user.
An attacker could host a specially crafted website that is designed to exploit
the vulnerability through Microsoft Edge, and then convince a user to view the
website. The attacker could also take advantage of compromised websites and
websites that accept or host user-provided content or advertisements by adding
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, typically by way of enticement in an email or Instant
Messenger message, or by getting them to open an attachment sent through
email.
An attacker who successfully exploited the vulnerability could gain the same
user rights as the current user. If the current user is logged on with
administrative user rights, an attacker who successfully exploited the
vulnerability could take control of an affected system. An attacker could then
install programs; view, change, or delete data; or create new accounts with
full user rights. The update addresses the vulnerability by modifying how
Microsoft Edge handles objects in memory.
The following table contains links to the standard entry for each
vulnerability in the Common Vulnerabilities and Exposures list:
Vulnerability title CVE number Publicly disclosed Exploited
Microsoft Edge Memory Corruption Vulnerability CVE-2016-0003 No No
Microsoft Edge Memory Corruption Vulnerability CVE-2016-0024
A remote code execution vulnerability exists in the way that the Chakra
JavaScript engine renders when handling objects in memory in Microsoft Edge.
The vulnerability could corrupt memory in such a way that an attacker could
execute arbitrary code in the context of the current user.
In a web-based attack scenario, an attacker could host a specially crafted
website that is designed to exploit the vulnerability through Microsoft Edge
and then convince a user to view the website. An attacker could also embed an
ActiveX control marked "safe for initialization" in an application or
Microsoft Office document that hosts the Edge rendering engine. The attacker
could also take advantage of compromised websites, and websites that accept or
host user-provided content or advertisements. These websites could contain
specially crafted content that could exploit the vulnerability.
An attacker who successfully exploited the vulnerability could gain the same
user rights as the current user. If the current user is logged on with
administrative user rights, an attacker who successfully exploited the
vulnerability could take control of an affected system. An attacker could then
install programs; view, change, or delete data; or create new accounts with
full user rights.
The update addresses the vulnerability by modifying how the Chakra JavaScript
scripting engine handles objects in memory.
The following table contains links to the standard entry for each
vulnerability in the Common Vulnerabilities and Exposures list:
Vulnerability title CVE number Publicly disclosed Exploited
Microsoft Edge Memory Corruption Vulnerability CVE-2016-0024 No No
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