Additional technical information to describe the Microsoft .NET Framework Windows forms processing buffer overflow vulnerability is available.
Microsoft .NET Framework contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.
The vulnerability is due to improper validation of user-supplied input processed by the affected software. An unauthenticated, remote attacker could exploit the vulnerability by convincing a user to visit a malicious website. Successful exploitation could allow an attacker to execute arbitrary code on the system.
Microsoft confirmed the vulnerability in a security bulletin and released software updates.
Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4, and 4.5 are vulnerable when running on the following systems:
Windows XP SP3
Windows XP Professional x64 Edition SP2
Windows Server 2003 SP2
Windows Server 2003 x64 Edition SP2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista SP2
Windows Vista x64 Edition SP2
Windows Server 2008 for 32-bit Systems SP2
Windows Server 2008 for x64-based Systems SP2
Windows Server 2008 for Itanium-based Systems SP2
Windows 7 for 32-bit Systems SP1 and prior
Windows 7 for x64-based Systems SP1 and prior
Windows 8 for 32-bit Systems
Windows 8 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems SP1 and prior
Windows Server 2008 R2 for Itanium-based Systems SP1 and prior
Windows Server 2012
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.
Microsoft has corrected this vulnerability by correcting how the .NET Framework copies objects in memory.
Microsoft has released a security bulletin at the following link: MS13-004
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system. If the user holds elevated privileges, a complete system compromise could be possible.
The vulnerability is in the System.Drawing.Imaging.EncoderParameters.ConvertToMemory() method inside the .NET Framework. The affected software improperly allocates an array using the value of the this.param.Length parameter and uses a loop terminated by the same parameter to fill the array with data. Insufficient validation of the this.param.Length parameter value between the array creation and loop could cause a heap buffer overflow, which could lead to a memory corruption error.
An unauthenticated, remote attacker could exploit the vulnerability by persuading a user to visit a malicious website. Successful exploitation could allow an attacker to execute arbitrary code on the system.
Administrators are advised to apply the appropriate updates.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Administrators may consider using the Microsoft Baseline Security Analyzer (MBSA) scan tool to identify common security misconfigurations and missing security updates on system endpoints.
Administrators are advised to monitor affected systems.
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.
Version 1, January 8, 2013, 09:22 AM: Microsoft .NET Framework contains a vulnerability that could allow an unauthenticated, remote attacker to gain elevated privileges on a targeted system. Updates are available.
for 32-bit systemsBase, SP1 | for x64-based systemsBase, SP1 | Original ReleaseBase | Datacenter EditionSP2 | Datacenter Edition, 64-bit (Itanium)SP2 | Datacenter Edition x64 (AMD/EM64T)SP2 | Enterprise EditionSP2 | Enterprise Edition, 64-bit (Itanium)SP2 | Enterprise Edition x64 (AMD/EM64T)SP2 | Standard EditionSP2 | Standard Edition, 64-bit (Itanium)SP2 | Standard Edition x64 (AMD/EM64T)SP2 | Web EditionSP2 | Datacenter EditionSP2 | Datacenter Edition, 64-bitSP2 | Itanium-Based Systems EditionSP2 | Enterprise EditionSP2 | Enterprise Edition, 64-bitSP2 | Essential Business Server StandardSP2 | Essential Business Server PremiumSP2 | Essential Business Server Premium, 64-bitSP2 | Standard EditionSP2 | Standard Edition, 64-bitSP2 | Web ServerSP2 | Web Server, 64-bitSP2 | x64-Based Systems EditionBase, SP1 | Itanium-Based Systems EditionBase, SP1 | Original ReleaseBase | Home BasicSP2 | Home PremiumSP2 | BusinessSP2 | EnterpriseSP2 | UltimateSP2 | Home Basic x64 EditionSP2 | Home Premium x64 EditionSP2 | Business x64 EditionSP2 | Enterprise x64 EditionSP2 | Ultimate x64 EditionSP2 | Home EditionSP3 | Professional EditionSP3 | Professional x64 (AMD/EM64T)SP2 | Tablet PC Edition2005, SP3 | Media Center Edition2005, SP3 | for 32-bit systemsBase | for x64-based systemsBase
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