Running the mongodb-info script against a bunch of MongoDB services on a client network I get the following error from every machine:
NSE: [mongodb-info 22.214.171.124:27017] Bson-ERR:Getter for 17 not implemented
NSE: mongodb-info against 126.96.36.199:27017 threw an error!
/usr/bin/../share/nmap/nselib/mongodb.lua:244: table index is nil
/usr/bin/../share/nmap/nselib/mongodb.lua:244: in upvalue '_elements_to_dict'
/usr/bin/../share/nmap/nselib/mongodb.lua:290: in function 'mongodb.fromBson'
/usr/bin/../share/nmap/nselib/mongodb.lua:586: in function 'mongodb.query'
/usr/bin/../share/nmap/scripts/mongodb-info.nse:104: in function </usr/bin/../share/nmap/scripts/mongodb-info.nse:70>
Looks like we don't have a fully-functional BSON parser, since it can't handle type 17 (timestamp), and the failure mode is to simply crash. I'll put in a quick fix to avoid crashing, but it might not result in usable output from the scripts until we get parsers for the other types implemented.