Google Chrome before 25.0.1364.97 on Windows and Linux, and before 25.0.1364.99 on Mac OS X, does not properly enforce a user gesture requirement before proceeding with a file download, which might make it easier for remote attackers to execute arbitrary code via a crafted file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16233
https://code.google.com/p/chromium/issues/detail?id=170569
http://lists.opensuse.org/opensuse-updates/2013-03/msg00045.html
http://googlechromereleases.blogspot.com/2013/02/stable-channel-update_21.html