Skip the navigation
News

Microsoft acts to avoid Windows blue screen repeat

Blocks rootkit-infected PCs from getting latest kernel update to prevent Blue Screen of Death

By Gregg Keizer
April 14, 2010 06:03 AM ET

Computerworld - Microsoft took steps Tuesday to avoid repeating the debacle two months ago that left Windows XP users staring at the notorious "Blue Screen of Death" error message after they applied a patch.

In February, a security update that fixed two flaws in the Windows kernel -- the operating system's most important component -- wreaked havoc when it was applied by users, who almost immediately flooded Microsoft's support forum with reports of crippled computers.

As the number of reports grew, Microsoft first stopped automatically serving the MS10-015 update, then confirmed that a rootkit caused the crashes. Only PCs that had been previously infected with the Alureon rootkit were incapacitated, Microsoft's investigation found.

Microsoft restarted distribution of the update only after it had come up with a way to block rootkit-infected PCs from receiving the patches. "If detection logic included in Automatic Update discovers abnormal conditions in certain operating system file configurations, the update will fail and customers will be presented with an error message that offers alternative support options," said Jerry Bryant, general manager with the Microsoft Security Response Team, in early March.

MS10-021, one of the 11 updates issued yesterday as part of Microsoft's monthly Patch Tuesday cycle, also fixed flaws in the Windows kernel. But Microsoft is hoping that this month's update won't trigger a repeat Blue Screen of Death.

"This security update includes package detection logic that prevents the installation of the security update if certain abnormal conditions exist on 32-bit systems," stated the MS10-021 bulletin. "These abnormal conditions on a system could be the result of an infection with a computer virus that modifies some operating system files, which renders the infected computer incompatible with the kernel update."

One security expert applauded the move.

"I give Microsoft a big tip of the hat for not taking [the February incident] as a one-off," said Jason Miller, data and security team manager at network compliance and security vendor Shavlik Technologies. "The kernel is something that if something goes bad, that's not good. Patching the kernel is not like patching a media player."

Microsoft obviously learned a lesson. Even though the February update crashed a relatively small number of PCs, the problem actually affected many more, he argued. "It may have affected just a few people, but it scared almost everyone into not patching," Miller said.

Although scattered reports of problems with Tuesday's security updates have been posted on Microsoft's support forum, Computerworld did not find any message threads describing Blue Screen of Death crashes after users applied yesterday's MS10-021 kernel update.

Enterprises should still test the update before widely deploying it, Miller recommended. "With every kernel patch, you really have to test. We're pretty adamant about that," he said.

Microsoft also urged users to apply MS10-021 to protect themselves. Although attacks had not been found in the wild exploiting any of the eight vulnerabilities addressed by the update, the company noted that users would "likely...see reliable exploit code developed for one or more of these eight vulnerabilities" in the next 30 days.

This month's security update, including MS10-021, can be downloaded and installed via the Windows Update and Microsoft Update services, as well as through Windows Server Update Services.

Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at Twitter @gkeizer or subscribe to Gregg's RSS feed Keizer RSS. His e-mail address is gkeizer@ix.netcom.com.

Read more about Security in Computerworld's Security Topic Center.



Additional Resources
Forrester Consulting - Optimizing Users and Applications in a Mobile World
WHITE PAPER
Solving application issues over the WAN requires careful consideration. Based on their independent research, Forrester Consulting offers recommendations on how to tackle application performance issues, insufficient bandwidth and the inability to quickly restore users in a disaster.

Read now.

Security KnowledgeVault
WHITE PAPER
Security is not an option. This KnowledgeVault Series offers professional advice how to be proactive in the fight against cybercrimes and multi-layered security threats; how to adopt a holistic approach to protecting and managing data; and how to hire a qualified security assessor. Make security your Number 1 priority.

Read now.

Cut Communications Costs Once and for All
WHITE PAPER
New IP-based communications systems are being deployed by small and midsized businesses at a rapid rate. Learn how these organizations are enabling faster responsiveness, creating better customer experiences, speeding office or mobile interactions, and dramatically reducing existing communications costs.

Read now.

Security White Papers
Overcome Top 7 Admin Challenges of Active Directory
As Active Directory's role in the enterprise has drastically increased, so has the need to secure the data. Gain insight on creating repeatable,...
Insiders Can Ruin Your Company. Take Action.
Did you know that 80 percent of threats to an organization come from the inside? The threat from insiders is often overlooked in...
Top Solutions and Tools to Prevent Devastating Malware
Custom malware frequently goes undetected. According to Forrester Research, the best way to reduce risk of breach is to deploy file integrity monitoring...
X-Ray of the PCI Process-4 Proactive Steps
This white paper from Forrester Research Inc., helps break PCI into understandable components. Security and risk professionals will gain knowledge and insight into...
Identity Governance: The Business Imperatives
This white paper describes the business challenges and opportunities that are driving interest in Identity Governance while discussing considerations your organization should make...
All Security White Papers
Security Webcasts
Live Webcast
Playing Defense: Staying on Top of Your Disaster Recovery Game
When it comes to disaster recovery, rapidly growing data volumes, distributed computing models, and new technologies all combine to present an ever-changing playing...
Introduction to VMware vCenter Site Recovery Manager 5
Traditional disaster recovery solutions are often too expensive, complex and unreliable to meet business requirements. As a result, IT departments are hesitant to...
The Top Ten Secrets to Avoiding SAN Performance Problems
Maintaining peak performance while simultaneously addressing the root cause of SAN errors is challenging. Learn the most common SAN problems and explore new...
Deduplication Without Compromise
Go inside Quantum's scalable, high-performance, multi-protocol new DXi deduplication appliances, designed to make backup much more effective. Discover how the new future-proof DXi6700...
Director of Disk Products Discusses DXi6700
Discover how the new DXi 6700 series of deduplication appliances provide investment protection and a future-proof feature set, all while delivering fast, scalable,...
Playing Defense: Staying on Top of Your Disaster Recovery Game
When it comes to disaster recovery, rapidly growing data volumes, distributed computing models, and new technologies all combine to present an ever-changing playing...
All Security Webcasts
Newsletter Sign-Up

Receive the latest news test, reviews and trends on your favorite technology topics

Choose a newsletter
  1. View all newsletters | Privacy Policy
IT Jobs