Title

The SUSE operating system root account must be the only account with unrestricted access to the system. (Cat I impact)

Discussion

If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricted access to the entire SUSE operating system. Multiple accounts with a UID of "0" afford an opportunity for potential intruders to guess a password for a privileged account.

Check Content

Verify that the SUSE operating system root account is the only account with unrestricted access to the system. Check the system for duplicate UID "0" assignments with the following command: > awk -F: '$3 == 0 {print $1}' /etc/passwd root If any accounts other than root have a UID of "0", this is a finding.

Fix Text

Change the UID of any account on the SUSE operating system, other than the root account, that has a UID of "0". If the account is associated with system commands or applications, the UID should be changed to one greater than "0" but less than "1000". Otherwise, assign a UID of greater than "1000" that has not already been assigned.

Additional Identifiers

Rule ID: SV-234876r622137_rule

Vulnerability ID: V-234876

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.