Published:
14 September 2016
Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2016.2150
Microsoft Security Bulletin MS16-116: Security Update in OLE
Automation for VBScript Scripting Engine (3188724)
14 September 2016
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AusCERT Security Bulletin Summary
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Product: Microsoft Windows
Publisher: Microsoft
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-3375
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS16-116
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Microsoft Security Bulletin MS16-116: Security Update in OLE Automation for
VBScript Scripting Engine (3188724)
Executive Summary
This security update resolves a vulnerability in Microsoft Windows. The
vulnerability could allow remote code execution if an attacker successfully
convinces a user of an affected system to visit a malicious or compromised
website. Note that you must install two updates to be protected from the
vulnerability discussed in this bulletin: The update in this bulletin,
MS16-116, and the update in MS16-104.
The security update affects all supported releases of Microsoft Windows and is
rated Critical on client operating systems and Moderate on servers.
Affected Software
Windows Vista
Windows Server 2008
Windows 7
Windows Server 2008 R2
Windows 8.1
Windows Server 2012
Windows Server 2012 R2
Windows RT 8.1
Windows 10
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core
installation)
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
Vulnerability Information
Scripting Engine Memory Corruption Vulnerability - CVE-2016-3375
A remote code execution vulnerability exists in the way that the Microsoft OLE
Automation mechanism and the VBScript Scripting Engine in Internet Explorer
access objects in memory. The vulnerability could corrupt memory in a way that
could allow an attacker to execute arbitrary code in the context of the
current user. 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, the attacker 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.
An attacker could host a specially crafted website that is designed to exploit
the vulnerability through Internet Explorer, and then convince a user to view
the website. The attacker could also take advantage of compromised websites,
or 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 via an enticement in email or instant message, or by
getting them to open an email attachment.
The update, in conjunction with the Internet Explorer update in MS16-104,
addresses the vulnerability by modifying how the Microsoft OLE Automation
mechanism and the VBScript Scripting Engine in Internet Explorer handle
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
Scripting Engine Memory Corruption Vulnerability CVE-2016-3375 No No
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