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The following cyber advisory was issued by the New York State Office of Information Technology Services and is intended for State government entities. The information may or may not be applicable to the general public and, accordingly, the State does not warrant its use for any specific purposes.

ITS ADVISORY NUMBER:
2013-066

DATE(S) ISSUED:
7/09/2013

SUBJECT:
Vulnerability in Microsoft DirectShow Could Allow Remote Code Execution (2845187)

OVERVIEW:

A vulnerability has been discovered in Microsoft DirectShow that could allow remote code execution. DirectShow is a component of Windows for streaming media and performing various operations with media files on Microsoft Windows operating systems. This vulnerability can be exploited when a user opens a specially crafted GIF image file. Successful exploitation could allow an attacker to gain the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

SYSTEMS AFFECTED:

  • Windows XP
  • Windows Vista
  • Windows 7
  • Windows 8
  • Windows Server 2003
  • Windows Server 2008
  • Windows Server 2012

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

DESCRIPTION:
A vulnerability has been discovered in Microsoft DirectShow that could allow remote code execution. The vulnerability is caused by the way DirectShow parses GIF image files and can be exploited when a user visits a website with specially crafted content. Successful exploitation could allow an attacker to gain the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

RECOMMENDATIONS:
We recommend the following actions be taken:

  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Remind users not to open email attachments from unknown users or suspicious emails from trusted sources.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.

REFERENCES:
Microsoft:
https://technet.microsoft.com/en-us/security/bulletin/ms13-056

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3174

Deborah A. Snyder

Acting Chief Information Security Officer


 

Cyber Security

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