Security News > 2002 > November > Microsoft calls 'foul' on OS vulnerability data

http://www.computerworld.com/securitytopics/security/story/0,10801,75721,00.html By Paul Roberts, IDG News Service NOVEMBER 07, 2002 Microsoft Corp. is responding to a report published last week by London-based security intelligence firm Mi2g Ltd. that claimed that the Apple Macintosh operating system and certain varieties of Unix are less vulnerable to attack than the popular Windows and Linux operating systems. The report, a summary of which was released to the public by Mi2g, attributed 44% of the software vulnerabilities announced in the first 10 months of 2002 to Microsoft's Windows operating system and 19% to the open-source Linux operating system. By comparison, the company attributed only 1.9% to Apple Computer Inc.'s Mac OS. In an interview, Mike Nash, vice president of the security business unit at Microsoft, said he feels those numbers are misleading. "Essentially what [Mi2g] has done is look at a combination of vulnerabilities announced by vendors and new vulnerabilities reported by users," Nash said. "There's no way to determine if the same issue is counted multiple times, or if erroneous vulnerabilities are being reported." Products with more customers, like Microsoft Windows, are bound to have more vulnerabilities reported under such a system regardless of whether those products are less or more secure than the competition, according to Nash. Jan Anderson, a member of Mi2g's Intelligence Unit, says that the small size of the Mac OS user base -- what Mi2g refers to as "security through obscurity" -- doesn't entirely account for Mi2g's results, however. "Our main point here is that although only about 3% of systems are running Mac OS, the proportion of attacks suffered by these systems is 60 times less than this, i.e., 0.05 percent. There are also relatively few known vulnerabilities of Mac OS as stated in the news release," Anderson wrote in an e-mail response to questions. The issue may come down to which vulnerabilities get counted and which don't. In a statement, Mi2g said that the company is in touch with Microsoft at a senior level and that the two companies are working together to deal with the issue of vulnerability counting. "Our methodology relies on collecting vulnerabilities and slotting them into two categories: confirmed vulnerabilities and candidate vulnerabilities. We collect our vulnerabilities from recognized, credible and reliable sources including CERT, eliminating all duplicates and discounting for multiple references. We do look at vulnerabilities which affect a particular operating system as a whole even though they may originate at a server or application level," Mi2g said. D.K. Matai, CEO of Mi2g, said removing unconfirmed reports from Mi2g's numbers doesn't improve the picture for Microsoft. "Even there, we note that Microsoft doesn't account for 44% of vulnerabilities; it accounts for 54%," Matai said. According to Matai, Mi2g compares its data against that maintained by independent software vulnerability tracking organizations such as the CERT Coordination Center at Carnegie Mellon University in Pittsburgh, and the company's numbers are consistent with those maintained by CERT. CERT declined to comment on the vulnerability data it maintains. Regardless, software industry analysts and security experts agree that looking at the number of reported vulnerabilities is a poor measure of an operating system's security. "Comparing the number of vulnerabilities to shipments of the software is interesting, but not very useful," said Dan Kusnetzky, vice president of systems software research at IDC in Framingham, Mass. "All software is written by people, and people are fallible. The thing to look at that's more important is, when problems show up, of any kind, what is the response from the software vendor? How quick is the response? If the response comes six months after a problem was reported, that's not good." Marc Maffre, chief hacking officer at Aliso Viejo, Calif.-based eEye Digital Security Inc., agreed. "All operating systems have vulnerabilities," Maffre said. "The question is, How fast were they fixed? and, Is there a way to secure the vulnerability in advance of a fix -- a guideline document that would have helped?" While Apple's operating system may have fewer reported software vulnerabilities, Maffre and Kusnetzky both said, there are also few incentives driving hackers or companies like eEye to scour that product. "Breaking into Mac isn't something that gets a hacker kudos in his or her community. Breaking Microsoft gives that person the ego dollars that they depend upon," Kusnetzky said. Asked what businesses and individuals should do to assess the relative security of the various operating systems, Maffre and Kusnetzky both suggested that customers focus on securing their systems and assessing the ability of the software vendor to respond to problems as they arise, as opposed to worrying about the number of vulnerabilities. But both Maffre and Kusnetzky declined to give Microsoft a pass on the question of security. "Microsoft does need to do a better job at being secure," Maffre said. "There are too many trivial mistakes that you'd think a billion-dollar company wouldn't make." - ISN is currently hosted by Attrition.org To unsubscribe email majordomo () attrition org with 'unsubscribe isn' in the BODY of the mail.

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