Everything you find in Blender Cloud is either GNU GPL compliant software, or creative content that's licensed as Creative Commons. We use three CC licenses here:
CC-BY:A permissive license that allows any re-use for as long you give a fair credit. It's the default license. If you don't see an explicit license mention on a web page, you can assume the works is CC-BY.
CC-0:This is similar to Public Domain. We want to license low level assets (textures, props) as CC0 as much as possible.
CC-BY-SA:The copyleft license. Any re-use is fine for as long you share it under the same (compatible) license. We use this for works we want to remain part of Free Culture.
Whilst this is true, all OSI-licenses give others the ability to redistribute that code, and that doesn't appear to be the case here.