[syshax]

Just FYI to other owners:

Synology DSM 5.0-4493 Update 5 here: it uses busybox, so not vulnerable.

    synology> which bash
    synology> which sh
    /bin/sh
    synology> which ash
    /bin/ash
    synology> ls -l /bin/sh
    lrwxrwxrwx    1 root     root             7 Jun  5 11:27 /bin/sh -> busybox
    synology> ls -l /bin/ash
    lrwxrwxrwx    1 root     root             7 Jun  5 11:27 /bin/ash -> busybox

[adamfeldman]

Thank you for checking out DSM! This comment saved me a bunch of time.