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Musings on the Internet Explorer 0-day vulnerability
So are any of you like me with regard to the Internet Explorer vulnerability mentioned last week http://isc.sans.org/diary.php?storyid=874? I know that I am watching and waiting to see if Microsoft is going to release an out of cycle patch, or wait for December 13th patch day.  If I were a gambler, I might actually bet on Microsoft releasing it early.

Why do I think this way?  Well.... Glad you asked.

Yesterday, Microsoft updated the advisory located at KB911302 with a couple of tidbits.  First, they made mention of both Proof of Conecept and malicious software which appear to be targeting the reported vulnerability.  Second, they also mention the Windows Live Safety Center where end users can scan and remove any malicious software and variants that may be running around now.

Throwing in that Microsoft has on occasion released out-of-cycle patches (June 2004 is a case in point in my mind), then I think it is a safe bet that Microsoft will take appropriate steps to fix the problem as quickly as possible.  In the meantime there are 2 things I can continue to suggest.

1) Be vigilant.  Know that a patch will be forthcoming hopefully within the next 2 weeks and be ready to deploy quickly.

2) If your organization can operate with one of the workarounds Microsoft has mentioned in KB911302, then I recommend mitigating your risk as much as possible.  We all have at least one person who is a little too...uhm...liberal with browsing the Internet on company time.  Think about it, that very person is probably shopping for Christmas* presents right now on less-than-secure sites.  SO....I would suggest doing those workarounds to that computer first.  :-)


* For those that celebrate other holidays in December than Christmas, this statement is not meant to be offensive in any shape or form, or otherwise slight your holiday of choice.
ScottF

188 Posts
ISC Handler

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