GEN000880 - The root account must be the only account having a UID of 0.

Information

If an account has a UID of 0, it has root authority. Multiple accounts with a UID of 0 afford more opportunity for potential intruders to guess a password for a privileged account.

Solution

Remove or change the UID of accounts other than root that have UID 0.

See Also

http://iasecontent.disa.mil/stigs/zip/U_RedHat_5_V1R18_STIG.zip