Update (11-July-2018). — Version 1.06 fixes the Undo feature so that your last settings are remembered.

FillBleed runs in InDesign CS4, CS5, CS6, and CC.
• User interface available in English, French, German, and Spanish.
How to install the script in InDesign.
• Original idea discussed in the Indesign scripting forum: “Stretch image in one dimension”.
• FYI, this script is entirely based on IdExtenso's BasicScript module ;-)

Bugs and feedback?
Please, let me know what you think about this script via Twitter.