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.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-11987	GEN001980	SV-38740r2_rule		Medium

Description
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.

STIG	Date
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2017-12-08

Details

Check Text ( C-37175r2_chk )
Check system configuration files for plus (+) entries. Procedure: # find / -name .rhosts # cat //.rhosts \| grep -v "^#" \| grep "\+" # find / -name .shosts # cat //.shosts \| grep -v "^#" \| grep "\+" # find / -name hosts.equiv # cat //hosts.equiv \| grep -v "^#" \| grep "\+" # find / -name shosts.equiv # cat //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.

Check Text ( C-37175r2_chk )

Check system configuration files for plus (+) entries.

Procedure:
# find / -name .rhosts
# cat //.rhosts | grep -v "^#" | grep "\+"

# find / -name .shosts
# cat //.shosts | grep -v "^#" | grep "\+"

# find / -name hosts.equiv
# cat //hosts.equiv | grep -v "^#" | grep "\+"

# find / -name shosts.equiv
# cat //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 (F-32455r1_fix)
Edit the .rhosts, .shosts, hosts.equiv, shosts.equiv, /etc/passwd, /etc/security/passwd, and/or /etc/group files and remove entries containing a plus (+).