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AUSCERT External Security Bulletin Redistribution
Vulnerability in C Run-Time Library Could Allow Remote Code Execution
15 February 2012
AusCERT Security Bulletin Summary
Product: Microsoft Windows
Operating System: Windows Vista
Windows Server 2008
Windows Server 2008 R2
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
CVE Names: CVE-2012-0150
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Microsoft Security Bulletin MS12-013 - Critical
Vulnerability in C Run-Time Library Could Allow Remote Code Execution (2654428)
Published Date: February 14, 2012
This security update resolves a privately reported vulnerability in Microsoft
Windows. The vulnerability could allow remote code execution if a user opens a
specially crafted media file that is hosted on a website or sent as an email
attachment. An attacker who successfully exploited the vulnerability could gain
the same user rights as the local 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 all supported editions of Windows
Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. For more
information, see the subsection, Affected Software, in this section.
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
*Server Core installation affected. This update applies, with the same severity
rating, to supported editions of Windows Server 2008 or Windows Server 2008 R2
as indicated, whether or not installed using the Server Core installation
option. For more information on this installation option, see the TechNet
articles, Managing a Server Core Installation and Servicing a Server Core
Installation. Note that the Server Core installation option does not apply to
certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare
Server Core Installation Options.
Msvcrt.dll Buffer Overflow Vulnerability - CVE-2012-0150
A remote code execution vulnerability exists in the way that the msvcrt DLL
calculates the size of a buffer in memory, allowing data to be copied into
memory that has not been properly allocated. This vulnerability could allow
remote code execution if a user opens a specially crafted media file. If a
user is logged on with administrative user rights, an attacker who successfully
exploited this vulnerability could take complete control of an affected system.
An attacker could then install programs; view, change, or delete data; or
create new accounts with full user rights. 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.
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