Vulnerability in Microsoft OLE Could Allow Remote Code Execution
Date: 22 October 2014
The purpose of this Alert is to bring attention to Microsoft's security advisory regarding an OLE object vulnerability in all supported releases of Microsoft Windows (excluding Server 2003) being used in targeted attacks.
CCIRC is aware of a vulnerability affecting all supported releases of Microsoft Windows (excluding Server 2003). Attackers could exploit this vulnerability by creating a specially crafted Microsoft Office file that contains an OLE object, then distributing it to users. If users with vulnerable systems open the file, the exploited vulnerability would give malicious actors the same user rights as the current user. Successful exploitation allows for the execution of arbitrary code.
CVE Reference: CVE-2014-6352
CCIRC recommends that organizations review the following mitigation steps and consider their implementation in the context of their network environment:
- Consider deploying Microsoft's Enhanced Mitigation Toolkit (EMET), and configure Attack Surface Reduction. Reports indicate that the exploit will not execute if it detects EMET.
- Consider enabling Enable User Account Control (UAC).
- Most often, attacks of this type are detected by diligent and well-informed users. CCIRC recommends that organizations ensure users receive current situational awareness and training, including instructions on how to report unusual or suspicious emails.
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
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