All .rhosts, .shosts, .netrc, or hosts.equiv files must be accessible by only root or the owner.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-4428	GEN002060	SV-40341r1_rule	ECLP-1	Medium

Description
If these files are accessible by users other than root or the owner, they could be used by a malicious user to set up a system compromise.

STIG	Date
Solaris 10 X86 Security Technical Implementation Guide	2019-12-31

Details

Check Text ( C-39215r1_chk )
# for i in `cut -d: -f6 /etc/passwd \| awk '$1 == "" {$1 = "/"} {print $1}'`; do ls -l $i/.rhosts $i/.shosts $i/.netrc; done # ls -l /etc/hosts.equiv # ls -l /etc/ssh/shosts.equiv If the .netrc, .rhosts, .shosts, hosts.equiv, or shosts.equiv files have permissions greater than 600, then this is a finding. (If a password entry has no home directory assigned, the root directory (/) is used as a default.)

Check Text ( C-39215r1_chk )

# for i in `cut -d: -f6 /etc/passwd | awk '$1 == "" {$1 = "/"} {print $1}'`; do ls -l $i/.rhosts $i/.shosts $i/.netrc; done
# ls -l /etc/hosts.equiv
# ls -l /etc/ssh/shosts.equiv

If the .netrc, .rhosts, .shosts, hosts.equiv, or shosts.equiv files have permissions greater than 600, then this is a finding. (If a password entry has no home directory assigned, the root directory (/) is used as a default.)

Fix Text (F-34341r1_fix)
Ensure the permission for these files is set at 600 or less and the owner is the owner of the home directory that it is in. These files, outside of home directories (other than hosts.equiv in /etc and shosts.equiv in /etc/ssh; both are owned by root), have no meaning.