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AUSCERT External Security Bulletin Redistribution
ESB-2016.0075
Microsoft Security Bulletin MS16-003: Cumulative Security Update for
JScript and VBScript to Address Remote Code Execution
13 January 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft JScript
Microsoft VBScript
Publisher: Microsoft
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-0002
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS16-003
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Microsoft Security Bulletin MS16-003: Cumulative Security Update for JScript
and VBScript to Address Remote Code Execution (3125540)
Document Metadata
Bulletin Number: MS16-003
Bulletin Title: Cumulative Security Update for JScript and VBScript to Address
Remote Code Execution
Severity: Critical
KB Article: 3125540
Version: 1.0
Published Date: January 12, 2016
Executive Summary
This security update resolves a vulnerability in the VBScript scripting engine
in Microsoft Windows. The vulnerability could allow remote code execution if a
user visits a specially crafted website. An attacker who successfully
exploited this 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 this 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.
Affected Software
VBScript 5.7
VBScript 5.8
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
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 only)
Vulnerability Information
Scripting Engine Memory Corruption Vulnerability - CVE-2016-0002
A remote code execution vulnerability exists in the way that the VBScript
engine renders when handling objects in memory in Internet Explorer. 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 Internet
Explorer 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 IE 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 VBScript 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
Scripting Engine Memory Corruption Vulnerability CVE-2016-0002 No No
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