Tag Archives: Mark Miller

reply: Microsoft: Responsible Vulnerability Disclosure Protects Users

Microsoft: Responsible Vulnerability Disclosure Protects Users
http://www2.csoonline.com/exclusives/column.html?CID=28071
By Mark Miller, Director, Microsoft Security Response Center

Responsible disclosure, reporting a vulnerability directly to the vendor and allowing sufficient time to produce an update, benefits the users and everyone else in the security ecosystem by providing the most comprehensive and highest-quality security update possible.

Provided “sufficient time” doesn’t drag out too long, else the computer criminal (who are in the ‘security ecosystem’) benefit greatly from responsible disclosure too.

From my experience helping customers digest and respond to full disclosure reports, I can tell you that responsible disclosure, while not perfect, doesn’t increase risk as full disclosure can.

Except “your experience” wouldn’t take full disclosure cases into account appropriately. Look at some of the vulnerabilities reported in Windows, Real, Novell and other big vendors. Notice that in more and more cases, we’re seeing the vendor acknowledge multiple researchers who found the issues independantly. That is proof that multiple people know about vulnerabilities pre-disclosure, be it full or responsible. If a computer criminal has such vulnerability information that remains unpatched for a year due to the vendor producing “the most comprehensive and highest-quality security update possible”, then the risk is far worse than the responsible disclosure your experience encompasses.

Vendors only take these shortcuts because we have to, knowing that once vulnerability details are published the time to exploit can be exceedingly short-many times in the range of days or hours.

See above, the bolded “proof” I mention. If vendors are going to move along with their head in the sand, pretending that there is a single person with the vulnerability or exploit details, and pretending that they alone control the disclosure, the vendors are naive beyond imagination.

The security researcher community is an integral part of this change, with Microsoft products experiencing approximately 75 percent responsible disclosure.

I’d love to see the chart showing issues in Microsoft products (as listed in OSVDB), relevant dates (disclosed to vendor, patch date, public disclosure) and the resulting statistics. My gut says it would be less than 75%.

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