Microsoft Word Zero-Day Vulnerability

Number: AL14-004
Date: 25 March 2014


The purpose of this Alert is to bring attention to Microsoft Security Advisory 2953095 that describes a vulnerability in Microsoft Word recently used in targeted attacks.


The vulnerability could allow remote code execution if a user opens a specially crafted RTF file using an affected version of Microsoft Word, or previews or opens a specially crafted RTF email message in Microsoft Outlook while using Microsoft Word as the email viewer. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. In a web-based attack scenario, an attacker could host a website with a webpage that contains a specially crafted RTF file that is used to attempt to exploit this vulnerability.

Affected Products

*Note that by default, Microsoft Word is the email reader in Microsoft Outlook 2007, Microsoft Outlook 2010, and Microsoft Outlook 2013.

CVE Reference: CVE-2014-1761

Suggested action

Microsoft has released a Security Advisory and suggested actions to assist in addressing the vulnerability. CCIRC recommends that organizations review this information and consider their implementation in the context of their network environment.


Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589

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