V-810

Discussion

Vendor accounts and software may contain backdoors allowing unauthorized access to the system. These backdoors are common knowledge and present a threat to system security if the account is not disabled.

Check Content

Determine if default system accounts (such as those for sys, bin, uucp, nuucp, daemon, smtp) have been disabled.
# cat /etc/shadow
If an account's password field is "*", "*LK*", or is prefixed with a '!', the account is locked or disabled.
If there are any unlocked default system accounts this is a finding.