That metadata is available via CQ's RESTful API driven by Apache Sling. As long as your web server setup permits it, you can access DAM assets and their metadata using HTTP.
Thanks Ryan for the response.
Can you please provide sample code if any for accessing DAM assets and their metadata.
Appreciate your help.
You can use the API like this:
curl -u admin:admin localhost:4502/content/dam/geometrixx/banners/banner-retro.png.4.json
and it will return you all the available metadate for this specific DAM asset.