Operating System:

[Win]

Published:

24 September 2012

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0908
        Cumulative Security Update for Internet Explorer (2744842)
                             24 September 2012

===========================================================================

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

Product:           Internet Explorer
Publisher:         Microsoft
Operating System:  Windows XP
                   Windows Vista
                   Windows 7
                   Windows Server 2003
                   Windows Server 2008
                   Windows Server 2008 R2
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-4969 CVE-2012-2557 CVE-2012-2548
                   CVE-2012-2546 CVE-2012-1529 

Reference:         ASB-2012.0128.2
                   ESB-2012.0897

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/bulletin/ms12-063

Comment: AusCERT has received reports of these vulnerabilities being
         exploited in the wild.

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Microsoft Security Bulletin MS12-063 - Critical
Cumulative Security Update for Internet Explorer (2744842)

Published: Friday, September 21, 2012

Version: 1.0

General Information

Executive Summary

This security update resolves one publicly disclosed and four privately 
reported vulnerabilities in Internet Explorer. The most severe vulnerabilities 
could allow remote code execution if a user views a specially crafted webpage 
using Internet Explorer. An attacker who successfully exploited any of these 
vulnerabilities could gain the same user rights as the current user. Users 
whose accounts are configured to have fewer user rights on the system could be 
less impacted than users who operate with administrative user rights.

This security update is rated Critical for Internet Explorer 6, Internet 
Explorer 7, Internet Explorer 8, and Internet Explorer 9 on Windows clients and 
Moderate for Internet Explorer 6, Internet Explorer 7, Internet Explorer 8, and 
Internet Explorer 9 on Windows servers. Internet Explorer 10 is not affected. 
For more information, see the subsection, Affected and Non-Affected Software, 
in this section.

Affected Software 

Internet Explorer 6 
Internet Explorer 7
Internet Explorer 8 
Internet Explorer 9 
Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
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 7 for 32-bit Systems 
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems 
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems 
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1

Vulnerability Information

OnMove Use After Free Vulnerability - CVE-2012-1529

A remote code execution vulnerability exists in the way that Internet 
Explorer accesses an object in memory that has not been correctly initialized 
or has been deleted. The vulnerability may corrupt memory in such a way that 
an attacker could execute arbitrary code in the context of the current user.

Event Listener Use After Free Vulnerability - CVE-2012-2546

A remote code execution vulnerability exists in the way that Internet Explorer 
accesses an object in memory that has been deleted. The vulnerability may 
corrupt memory in such a way that an attacker could execute arbitrary code in 
the context of the current user.

Layout Use After Free Vulnerability - CVE-2012-2548

A remote code execution vulnerability exists in the way that Internet Explorer 
accesses an object in memory that has been deleted. The vulnerability may 
corrupt memory in such a way that an attacker could execute arbitrary code in 
the context of the current user.

cloneNode Use After Free Vulnerability - CVE-2012-2557

A remote code execution vulnerability exists in the way that Internet Explorer 
accesses an object in memory that has been deleted. The vulnerability may 
corrupt memory in such a way that an attacker could execute arbitrary code in 
the context of the current user.

execCommand Use After Free Vulnerability - CVE-2012-4969

A remote code execution vulnerability exists in the way that Internet Explorer 
accesses an object in memory that has been deleted. The vulnerability may 
corrupt memory in such a way that an attacker could execute arbitrary code in 
the context of the current user.

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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===========================================================================
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