Microsoft Windows Briefcase contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
Microsoft Windows Briefcase contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.
The vulnerability exists because the affected software performs improper memory operations when handling a Windows Briefcase. An unauthenticated, remote attacker could exploit this vulnerability by attempting to convince a user to open a crafted Briefcase. A successful exploit could allow the attacker to execute arbitrary code on the targeted system with the privileges of the logged-in user. If the user holds administrative privileges, the attacker could completely compromise the system.
Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
The following Microsoft products are affected:
Windows XP SP3, Professional x64 Edition SP2
Windows Server 2003 SP2, x64 Edition SP2, and Itanium-based Systems SP2
Windows Vista SP2, x64 Edition SP2
Windows Server 2008 (32-bit and 64-bit) Systems SP2
Windows 7 for (32-bit and 64-bit) Systems SP1 and prior
Windows Server 2008 R2 for x64-based Systems SP1 and prior
Windows 8 (32-bit and 64-bit)
To exploit the vulnerability, the attacker may provide a file via e-mail or other means and use misleading language or instructions to persuade the user to follow the provided link or open the malicious file.
Microsoft has corrected this vulnerability by modifying the way the Microsoft Windows handles Briefcases.
Microsoft has released a security bulletin at the following link: MS12-072
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system with the privileges of the user. If the user holds administrative privileges, a complete system compromise could occur.
The vulnerability is due to improper memory operations performed by the affected software. An integer underflow memory error condition could occur when the affected software processes a crafted Windows Briefcase.
An unauthenticated, remote attacker could exploit this vulnerability by attempting to convince a user to open a crafted Windows Briefcase. When the malicious files are processed by the affected software, a memory error condition may occur that the attacker could use to execute arbitrary code on the targeted system with the privileges of the logged-in user. If the user holds administrative privileges, the attacker could completely compromise the system.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
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.
Users may consider uninstalling the Briefcase namespace shell extension.
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 use an unprivileged account when browsing the Internet.
Administrators are advised to monitor critical 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.
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Enterprise Edition SP2 | Enterprise Edition, 64-bit SP2 | Essential Business Server Premium SP2 | Essential Business Server Premium, 64-bit SP2 | Essential Business Server Standard SP2 | Standard Edition SP2 | Standard Edition, 64-bit SP2 | Web Server SP2 | Web Server, 64-bit SP2
Windows Server 2008 R2
x64-Based Systems Edition Base, SP1
Business SP2 | Business x64 Edition SP2 | Enterprise SP2 | Enterprise x64 Edition SP2 | Home Basic SP2 | Home Basic x64 Edition SP2 | Home Premium SP2 | Home Premium x64 Edition SP2 | Ultimate SP2 | Ultimate x64 Edition SP2
Home Edition SP3 | Media Center Edition SP3 | Professional Edition SP3 | Professional x64 (AMD/EM64T) SP2 | Tablet PC Edition SP3
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