Running Dropbear Without Root Permissions
Nixon, Kent W
kwn2 at pitt.edu
Fri Jun 10 16:43:20 AWST 2016
Hi all,
I'm currently testing my (default) compile settings of dropbear 2016.73 on an x86_64 Ubuntu 14.04 machine. I'm running the dropbear server from the terminal of a standard user account and attempting to connect using dbclient as that same user from the same machine just to test/learn how to use dropbear before I attempt to cross-compile it and run it on an Android system.
I currently run the following command to start the server:
dropbear -F -p 6666 -E -R -m
And attempt to connect (using the same machine) as the same user that is running dropbear using:
dbcleint -p 6666 -y <username>@127.0.0.1
Everything seems to work well, except that after I enter the appropriate password, the client is rejected by the server which posts the message:
User account '<username>' is locked
However, following the same steps as above, but running the dropbear server with root permissions, everything works as expected (i.e. I am able to open a remote shell without any problems).
What changes when dropbear is run with standard user permissions that is causing the account to be 'locked'? Do I need to locate the rsa/dss/ecdsa keys somewhere else other than /etc/dropbear/?
Thanks in advance for your time and consideration!
~ Kent
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