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14 September 2016

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             AUSCERT External Security Bulletin Redistribution

         Microsoft Security Bulletin MS16-115: Security Update for
                  Microsoft Windows PDF Library (3188733)
                             14 September 2016


        AusCERT Security Bulletin Summary

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Access Confidential Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-3374 CVE-2016-3370 

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Microsoft Security Bulletin MS16-115: Security Update for Microsoft Windows 
PDF Library (3188733)

Executive Summary

This security update resolves vulnerabilities in Microsoft Windows. The 
vulnerabilities could allow information disclosure if a user views specially 
crafted PDF content online or opens a specially crafted PDF document.

This security update is rated Important for all supported editions of Windows
8.1, Windows Server 2012, Windows RT 8.1, Windows Server 2012 R2, and Windows

Affected Software

Windows 8.1

Windows Server 2012

Windows Server 2012 R2

Windows RT 8.1

Windows 10

Vulnerability Information

Multiple PDF Library Information Disclosure Vulnerabilities

Multiple information disclosure vulnerabilities exist in the way that the 
Windows PDF Library handles objects in memory. An attacker who successfully 
exploited the vulnerabilities could obtain information to further compromise a
target system.

In a web-based attack scenario, an attacker could host a website that is used
to attempt to exploit the vulnerabilities. Additionally, compromised websites
and websites that accept or host user-provided content could contain specially
crafted content that could be used to exploit the vulnerabilities. However, in
all cases an attacker would have no way to force users to view 
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 vulnerabilities by correcting how certain functions 
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

PDF Library Information Disclosure Vulnerability 	CVE-2016-3370 	No 			No

PDF Library Information Disclosure Vulnerability 	CVE-2016-3374 	No 			No

- --------------------------END INCLUDED TEXT--------------------

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