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AUSCERT External Security Bulletin Redistribution
ESB-2012.0353
Cumulative Security Update for Internet Explorer
11 April 2012
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AusCERT Security Bulletin Summary
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Product: Microsoft Internet Explorer
Publisher: Microsoft
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2012-0172 CVE-2012-0171 CVE-2012-0170
CVE-2012-0169 CVE-2012-0168
Original Bulletin:
http://technet.microsoft.com/en-us/security/bulletin/ms12-023
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Microsoft Security Bulletin MS12-023 - Critical
Cumulative Security Update for Internet Explorer (2675157)
Published Date: April 10, 2012
Version: 1.0
General Information
Executive Summary
This security update resolves five 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.
Affected Software
Internet Explorer 6
Internet Explorer 7
Internet Explorer 8
Internet Explorer 9
Vulnerability Information
Print Feature Remote Code Execution Vulnerability - CVE-2012-0168
A remote code execution vulnerability exists when Internet Explorer attempts to
print a specially crafted HTML page. The vulnerability could allow an attacker
to execute arbitrary code in the context of the current user.
JScript9 Remote Code Execution Vulnerability - CVE-2012-0169
A remote code execution vulnerability exists in the way that Internet Explorer
accesses an object 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.
OnReadyStateChange Remote Code Execution Vulnerability - CVE-2012-0170
A remote code execution vulnerability exists in the way that Internet Explorer
accesses an object 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.
SelectAll Remote Code Execution Vulnerability - CVE-2012-0171
A remote code execution vulnerability exists in the way that Internet Explorer
accesses an object 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.
VML Style Remote Code Execution Vulnerability - CVE-2012-0172
A remote code execution vulnerability exists in the way that Internet Explorer
accesses an object 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
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