[sudo-users] Sudo command hangs after i enter the password on CentOS 6.10 -'Sudo-1.8.6p3-29.el6_10.3.x86_64'

[Todd C. Miller]

I'm sorry, that's an 8 year old version of sudo with a large RedHat
patchset applied on top.  As such it's not really supportable.

However, if you have log_input, log_output or use_pty set in sudoers,
try disabling that and see if the problem still occurs.  There were
race conditions in some versions of 1.8.x where the exit of short-lived
commands could be missed.

I do provide up to date sudo packages for CentOS 6 at
https://www.sudo.ws/download.html#binary

 - todd