Note: This blog post is from 2013. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.Adobe has come out with a new security hotfix for a very serious attack on ColdFusion servers which had hit many (perhaps most) CF shops over the past couple of weeks, and it's vital that all shops apply that fix. (Even if you think you've protected yourself in other ways
There is a new Adobe CF blog entry pointing to the new hotfix, and I point that out rather than the technote for the hotfix itself, because as often is the case, there has been some useful discussion related to applying the fix.
Indeed, there's a warning I've shared there about a problem (hopefully temporary) with the hotfix file for users of ColdFusion 9.0.2. (Update: the confusion about 9.0.2 is resolved. The technote has been corrected. See the comments in the Adobe blog entry for more details.)
Users of ColdFusion 10, 9.0.2, 9.0.1, and 9.0 should certainly proceed to implement the fix.
I address several questions and other observations about this hotfix below.