Title

The .rhosts, .shosts, hosts.equiv, shosts.equiv, /etc/passwd, /etc/shadow, and/or /etc/group files must not contain a plus (+) without defining entries for NIS+ netgroups or LDAP netgroups. (Cat II impact)

Discussion

A plus (+) in system accounts files causes the system to lookup the specified entry using NIS or LDAP. If the system is not using NIS or LDAP, no such entries should exist.

Check Content

Check system configuration files for plus (+) entries. Procedure: # find / -name .rhosts # cat /<directorylocation>/.rhosts | grep -v "^#" | grep "\+" # find / -name .shosts # cat /<directorylocation>/.shosts | grep -v "^#" | grep "\+" # find / -name hosts.equiv # cat /<directorylocation>/hosts.equiv | grep -v "^#" | grep "\+" # find / -name shosts.equiv # cat /<directorylocation>/shosts.equiv | grep -v "^#" | grep "\+" # cat /etc/passwd | grep -v "^#" | grep "\+" # cat /etc/security/passwd | grep -v "^#" | grep "\+" # cat /etc/group | grep -v "^#" | grep "\+" If the .rhosts, .shosts, hosts.equiv, shosts.equiv, /etc/passwd, /etc/shadow, and/or /etc/group files contain a plus (+) and do not define entries for NIS+ netgroups or LDAP netgroups, this is a finding.

Fix Text

Edit the .rhosts, .shosts, hosts.equiv, shosts.equiv, /etc/passwd, /etc/security/passwd, and/or /etc/group files and remove entries containing a plus (+).

Additional Identifiers

Rule ID: SV-38740r2_rule

Vulnerability ID: V-11987

Group Title: GEN001980

Expert Comments

CCIs tied to check.

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