SonicWall Global Management System XMLRPC set_time_zone Unauth RCE

This module exploits a vulnerability in SonicWall Global
Management System Virtual Appliance versions 8.1 (Build 8110.1197)
and below. This virtual appliance can be downloaded from
http://www.sonicwall.com/products/sonicwall-gms/ and is used 'in a
holistic way to manage your entire network security environment.'

These vulnerable versions (8.1 Build 8110.1197 and below) do not
prevent unauthenticated, external entities from making XML-RPC
requests to port 21009 of the virtual app. After the XML-RPC call
is made, a shell script is called like so:
'timeSetup.sh --tz="`command injection here`"' --usentp="blah"'.