How To Beat Back The New Zero-Day Windows Bug - InformationWeek

InformationWeek is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

IoT
IoT
News
News
12/29/2005
02:23 PM
50%
50%

How To Beat Back The New Zero-Day Windows Bug

Workarounds include disabling the Windows Picture and Fax Viewer, the application that Internet Explorer automatically launches to display WMF image files.

With a patch for the worsening zero-day Windows vulnerability perhaps weeks -- or more -- away, security companies and Microsoft on Thursday recommended workarounds and other ad hoc defenses.

Several firms, Microsoft included, told users to disable the Windows Picture and Fax Viewer, the application that Internet Explorer automatically launches to display WMF image files. Microsoft's advisory instructed users to click the Start menu, choose Run, then enter "regsvr32 -u %windir%\system32\shimgvw.dll" (without the quote marks), and click OK. Doing so, however, breaks the viewer so that it won't display other associated image file formats, such as those with the .jpg extension, a popular format used by most digital cameras.

And it might not solve the problem. "Any application which automatically displays or renders WMF files is vulnerable," wrote Chris Carboni, an analyst with the Internet Storm Center, in a blog entry Thursday.

Another tactic, said some security vendors, is to block all WMF image files at the network perimeter. Symantec, for instance, listed that advice in its latest bulletin about the vulnerability. Unfortunately, hackers can simply rename a malicious WMF file with a different extension -- .gif or .jpg, for example -- to pass through an exploit. Windows parses WMF files based not on the extension it reads, but on the content of the file, making such blocking strategies ineffective.

We welcome your comments on this topic on our social media channels, or [contact us directly] with questions about the site.
Previous
1 of 2
Next
Comment  | 
Print  | 
More Insights
State of the Cloud
State of the Cloud
Cloud has drastically changed how IT organizations consume and deploy services in the digital age. This research report will delve into public, private and hybrid cloud adoption trends, with a special focus on infrastructure as a service and its role in the enterprise. Find out the challenges organizations are experiencing, and the technologies and strategies they are using to manage and mitigate those challenges today.
News
COVID-19: Using Data to Map Infections, Hospital Beds, and More
Jessica Davis, Senior Editor, Enterprise Apps,  3/25/2020
Commentary
Enterprise Guide to Robotic Process Automation
Cathleen Gagne, Managing Editor, InformationWeek,  3/23/2020
Slideshows
How Startup Innovation Can Help Enterprises Face COVID-19
Joao-Pierre S. Ruth, Senior Writer,  3/24/2020
Register for InformationWeek Newsletters
Video
Current Issue
IT Careers: Tech Drives Constant Change
Advances in information technology and management concepts mean that IT professionals must update their skill sets, even their career goals on an almost yearly basis. In this IT Trend Report, experts share advice on how IT pros can keep up with this every-changing job market. Read it today!
White Papers
Slideshows
Twitter Feed
Sponsored Live Streaming Video
Everything You've Been Told About Mobility Is Wrong
Attend this video symposium with Sean Wisdom, Global Director of Mobility Solutions, and learn about how you can harness powerful new products to mobilize your business potential.
Sponsored Video
Flash Poll