Operating System:

[Win]

Published:

13 January 2016

Protect yourself against future threats.

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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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