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Vulnerability of Office 2007: privilege escalation via IME Japanese

Synthesis of the vulnerability 

An attacker can use a vulnerability of the IME Japanese of Office 2007, in order to escalate his privileges.
Impacted systems: Office, Access, Office Communicator, Excel, InfoPath, OneNote, Outlook, PowerPoint, Project, Publisher, Visio, Word.
Severity of this alert: 2/4.
Creation date: 12/11/2014.
Références of this alert: 2992719, CERTFR-2014-AVI-476, CVE-2014-4077, MS14-078, VIGILANCE-VUL-15623.

Description of the vulnerability 

The Office 2007 product can be configured with a Japanese IME (Input Method Editor), in order to enter Japanese characters.

However, a special file can be used to escape from the sandbox.

An attacker can therefore use a vulnerability of the IME Japanese of Office 2007, in order to escalate his privileges.
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This computer weakness alert impacts software or systems such as Office, Access, Office Communicator, Excel, InfoPath, OneNote, Outlook, PowerPoint, Project, Publisher, Visio, Word.

Our Vigil@nce team determined that the severity of this weakness note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this weakness bulletin.

Solutions for this threat 

Office 2007: patch for IME Japanese.
A patch is available in information sources.
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