Vulnerability Alert

Microsoft Office Chinese Input Method Editor Privilege Escalation Vulnerability

 
Threat Type:CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID:30593
Version:1
First Published:2013 September 10 17:20 GMT
Last Published:2013 September 10 17:20 GMT
Port: Not available
CVE:CVE-2013-3859
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:6.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.0
 
Version Summary:Microsoft Office with Microsoft Pinyin IME 2010 for Chinese contains a vulnerability that could allow an authenticated, local attacker to gain elevated privileges on a targeted system. Updates are available.
 
 
Description
A vulnerability in Microsoft Office with Microsoft Pinyin Input Method Editor (IME) 2010 for Chinese could allow an authenticated, local attacker to gain elevated privileges.

The vulnerability is due improper configuration of Office Pinyin IME for Chinese when running on affected versions of Microsoft Office. An authenticated, local attacker with low-level privileges could exploit this vulnerability by using the IME toolbar to access Internet Explorer. Successful exploitation could allow the attacker to gain elevated privileges and run arbitrary code in kernel mode, which could lead to a complete system compromise.

Microsoft confirmed the vulnerability in a security bulletin and released software updates.
 
Warning Indicators
Microsoft Office 2010 32-bit and 64-bit editions with Microsoft Pinyin IME 2010 are affected.
 
IntelliShield Analysis
To exploit the vulnerability, an attacker need to authenticate and have local access to the targeted device. These access requirements limits the likelihood of a successful exploit.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the September 2013 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 September 2013

 
Vendor Announcements
Microsoft has released a security bulletin at the following link: MS13-075
 
Impact
An authenticated, local attacker could exploit this vulnerability to gain system-level privileges on a targeted device. Successful exploitation could allow the attacker to execute arbitrary code in kernel mode, which could be used to completely compromise the system.
 
Technical Information
The vulnerability is due improper configuration of Office Pinyin IME for Chinese when running on affected versions of Microsoft Office.

An authenticated, local attacker with low-level privileges could exploit this vulnerability by using the IME toolbar to access Internet Explorer. Successful exploitation could allow the attacker to gain elevated privileges and run arbitrary code in kernel mode, which could lead to a complete system compromise.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to access local systems.

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.
 
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.Office 2010 SP1
Microsoft, Inc.Microsoft Pinyin IME 2010 Base

Associated Products:
N/A




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