Rails 2.1.2 includes the same two security fixes that we pushed out for 2.0.x recently. We’re talking about a backport of the offset/limit sanitization fix for Active Record and a fix against header-injection when using user-contributed strings in redirect_to (see Response Splitting for more information).
In addition, Rails 2.1.2 fixes the warning that users of RubyGems 1.3.0 were having with script/generate as well as a range of other minor fixes. Enjoy!
As always, you can install with:
gem install rails --version 2.1.2