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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.2337
         Vulnerability in Microsoft Graphics Component Could Allow
                     Information Disclosure (3013126)
                              9 December 2014

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Graphics Component
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Access Confidential Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-6355  

Original Bulletin: 
   https://technet.microsoft.com/library/security/ms14-085

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Microsoft Security Bulletin MS14-085 - Important

Vulnerability in Microsoft Graphics Component Could Allow Information 
Disclosure (3013126)

Published: December 9, 2014

Version: 1.0

Executive Summary

This security update resolves a publicly disclosed vulnerability in Microsoft
Windows. The vulnerability could allow information disclosure if a user 
browses to a website containing specially crafted JPEG content. An attacker 
could use this information disclosure vulnerability to gain information about
the system that could then be combined with other attacks to compromise the 
system. The information disclosure vulnerability by itself does not allow 
arbitrary code execution. However, an attacker could use this information 
disclosure vulnerability in conjunction with another vulnerability to bypass 
security features such as Address Space Layout Randomization (ASLR).

Windows Server 2003
Windows Vista
Windows Server 2008
Windows 7
Windows Server 2008 R2
Windows 8 and Windows 8.1
Windows Server 2012 and Windows Server 2012 R2
Windows RT and Windows RT 8.1

Vulnerability Information

Information Disclosure Vulnerability - CVE-2014-6355

An information disclosure vulnerability exists in the Microsoft Graphics 
Component that could allow an attacker to more reliably predict the memory
offsets of specific instructions in a given call stack. The vulnerability 
is caused when the Microsoft Graphics Component improperly handles the 
decoding of JPEG images in memory. An attacker could use this information
disclosure vulnerability to gain information about the system that could 
then be combined with other attacks to compromise the system. The 
information disclosure vulnerability by itself does not allow arbitrary 
code execution. However, an attacker could use this information disclosure
vulnerability in conjunction with another vulnerability to bypass security
features such as Address Space Layout Randomization (ASLR). The security 
update addresses the vulnerability by changing how memory is initialized
and managed when JPEG images are decoded.

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