CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2014-051

DATE(S) ISSUED:
06/10/2014

SUBJECT:
Memory Corruption Vulnerability in Microsoft Word Could Allow Remote Code Execution (MS14-034)

OVERVIEW:

A memory corruption vulnerability has been discovered in Microsoft Word that could allow for remote code execution. An attacker can exploit this issue to execute arbitrary code in the context of the currently logged-in user. Failed exploit attempts will likely result in denial-of-service conditions.

SYSTEM AFFECTED:

  • Microsoft Office 2007 SP3
  • Microsoft Office Compatibility Pack SP3

 

RISK:
Government:

  • Large and medium government entities: High
  • Small government entities: High

Businesses:

  • Large and medium business entities: High
  • Small business entities: High

Home users: High

TECHNICAL SUMMARY:
A memory corruption vulnerability has been discovered in Microsoft Word that could allow for remote code execution. Specifically, this issue occurs when Microsoft Word parses a specially crafted Office file. To exploit this issue, an attacker would need to entice an unsuspecting user to view the specially crafted Office file. Successful exploitation of this vulnerability could allow attackers to execute arbitrary code in the context of the currently logged-in user. Failed exploit attempts will likely result in denial-of-service conditions.

RECOMMENDATIONS:
We recommend the following actions be taken:

  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.

 

REFERENCES:
Microsoft:
https://technet.microsoft.com/library/security/ms14-034

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1761