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All .rhosts, .shosts, or host.equiv files must only contain trusted host-user pairs.


Overview

Finding ID Version Rule ID IA Controls Severity
V-4427 GEN002020 SV-40331r1_rule ECCD-1 ECCD-2 Medium
Description
If these files are not properly configured, they could allow malicious access by unknown malicious users from untrusted hosts who could compromise the system.
STIG Date
SOLARIS 10 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE 2018-04-10

Details

Check Text ( C-39209r1_chk )
Locate and examine all .rhosts, .shosts, hosts.equiv, and shosts.equiv files. The .rhosts and .shosts files are stored in home directories. (If a user does not have a home directory assigned in /etc/passwd, the root directory (/) is assigned as a default home directory.)

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

If any .rhosts, .shosts, hosts.equiv, or shosts.equiv file contains other than host-user pairs, this is a finding.
Fix Text (F-4326r2_fix)
If possible, remove the .rhosts, .shosts, hosts.equiv, and shosts.equiv files. If the files are required, remove any content from the files except for necessary host-user pairs.