cyberstrikeus 13.5 Verify No UID 0 Accounts Exist Other Than root (Scored)
Profile Applicability
- Level 1
Description
Any account with UID 0 has superuser privileges on the system.
Rationale
This access must be limited to only the default root account and only from the system console. Administrative access must be through an unprivileged account using an approved mechanism as noted in Item 9.4 Restrict root Login to System Console.
Audit Procedure
Using Command Line
Run the following command and verify that only the word "root" is returned:
/bin/cat /etc/passwd | /usr/bin/awk -F: '($3 == 0) { print $1 }' root
Expected Result
Only root should be returned. Any other accounts with UID 0 represent a security risk.
Remediation
Using Command Line
Delete any other entries that are displayed besides root.
Default Value
Only the root account has UID 0 by default.
References
- CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
Profile
Level 1 - Scored