Code Red: Blessing in Disguise?

The Code Red virus, which did a Tony Soprano on Microsoft Internet Server boxes around the world, may actually end up doing more good than harm.

The Web site Netcraft (, which surveys Web servers across the Internet monthly, shows that whereas 34 percent of IIS servers were vulnerable to Code Red in July, only 2 percent of those same servers were vulnerable in August.

Netcraft concludes, “The combination of the Code Red worm and the first cumulative patch for Microsoft-IIS has significantly improved the security of Microsoft-IIS systems on the Internet.”

The figures, Netcraft said, “demonstrates, in part, the deep-set complacency regarding security amongst e-commerce sites and, in part, the difficulties in maintaining a reasonable level of security without the benefit of regular external testing. The high visibility of Code Red induced many e-commerce sites running Microsoft-IIS to patch their systems for the first time.”

That’s partially Netcraft spin, as the company does external testing of Web sites, but it also points out a problem other organizations have said exists: Some MCSEs don’t have the necessary training on how to properly patch and reconfigure servers.

The patches may also have reduced the potential damage from a number of other IIS-related vulnerabilities. According to the survey, the number of servers with administration pages accessible by Internet users dropped from 35 percent in June to 10 percent in August; server paths revealed (which could give a hacker valuable information on how to find servers) dropped from 50 percent of servers in June, to 23 percent in July, to 6 percent in August. The percentage of servers with viewable script source code spiraled down from 21 percent to 11 percent to less than 4 percent over the same three-month period.

Netcraft also promises to reveal, at a later date, whether IIS servers are becoming less frequently used due to concerns about the security holes.

Even with just 2 percent of servers vulnerable, Code Red is still doing its best to propagate. One certified professional with an IIS server on the Internet said his machine still gets attacked 20 to 50 times per day.

About the Author

Keith Ward is the editor in chief of Virtualization & Cloud Review. Follow him on Twitter @VirtReviewKeith.


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