fuseiso software package provides FUSE module to mount ISO filesystem images, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install fuseiso
fuseiso is installed in your system.
Make ensure the fuseiso package were installed using the commands given below,
$ sudo dpkg-query -l | grep fuseiso *
You will get with fuseiso package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Administration Utilities |
| Package | fuseiso |
| Version | 20070708-3+deb7u1 |
| Description | FUSE module to mount ISO filesystem images |
| Sub Section | Admin |