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Vulnerability Alert

Microsoft Windows Briefcase Processing Arbitrary Code Execution Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:27351
Version:1
First Published:2012 November 13 13:10 GMT
Last Published:2012 November 13 18:10 GMT
Port: Not available
CVE:CVE-2012-1527
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.9
 
Version Summary:Microsoft Windows Briefcase contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
 
 
Description
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.
 
Warning Indicators
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)
 
IntelliShield Analysis
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.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the November 2012 security bulletin release. This Cisco bulletin, which assists administrators in identifying or mitigating these vulnerabilities using Cisco devices, is available at the following link: Cisco Applied Mitigation Bulletin: Microsoft Security Bulletin Release for November 2012
 
Vendor Announcements
Microsoft has released a security bulletin at the following link: MS12-072
 
Impact
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.
 
Technical Information
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.
 
Safeguards
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.
 
Patches/Software
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.
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Microsoft, Inc.Windows 7 for 32-bit systems Base, SP1 | for x64-based systems Base, SP1
Microsoft, Inc.Windows Server 2003 Datacenter Edition SP2 | Datacenter Edition, 64-bit (Itanium) SP2 | Datacenter Edition x64 (AMD/EM64T) SP2 | Enterprise Edition SP2 | Enterprise Edition, 64-bit (Itanium) SP2 | Enterprise Edition x64 (AMD/EM64T) SP2 | Standard Edition SP2 | Standard Edition, 64-bit (Itanium) SP2 | Standard Edition x64 (AMD/EM64T) SP2 | Web Edition SP2
Microsoft, Inc.Windows Server 2008 Enterprise Edition SP2 | Enterprise Edition, 64-bit SP2 | Essential Business Server Standard SP2 | Essential Business Server Premium SP2 | Essential Business Server Premium, 64-bit SP2 | Standard Edition SP2 | Standard Edition, 64-bit SP2 | Web Server SP2 | Web Server, 64-bit SP2
Microsoft, Inc.Windows Server 2008 R2 x64-Based Systems Edition Base, SP1
Microsoft, Inc.Windows Vista Home Basic SP2 | Home Premium SP2 | Business SP2 | Enterprise SP2 | Ultimate SP2 | Home Basic x64 Edition SP2 | Home Premium x64 Edition SP2 | Business x64 Edition SP2 | Enterprise x64 Edition SP2 | Ultimate x64 Edition SP2
Microsoft, Inc.Windows XP Home Edition SP3 | Professional Edition SP3 | Professional x64 (AMD/EM64T) SP2 | Tablet PC Edition SP3 | Media Center Edition SP3
Microsoft, Inc.Windows 8 for 32-bit systems Base | for x64-based systems Base

Associated Products:
N/A




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