Ensure no users have .rhosts files

BajaNivel 2Revisión manualcos

Descripción

While no .rhosts files are shipped by default, users can easily create them. This action is only meaningful if .rhosts support is permitted in the file /etc/pam.conf . Even though the .rhosts files are ineffective if support is disabled in /etc/pam.conf , they may have been brought over from other systems and could contain information useful to an attacker for those other systems.

Cómo se verifica

Método de auditoría: Revisión manual

Esta recomendación no se puede verificar automáticamente. Un escaneo la lista con estas instrucciones cuando se pasa --include-manual.

Run the following script and verify no results are returned: #!/bin/bash grep -E -v '^(root|system-halt|sync|system-shutdown)' /etc/passwd | awk -F: '($7 != "'"$(which nologin)"'" && $7 != "/bin/false") { print $1 " " $6 }' | while read user dir; do if [ ! -d "$dir" ]; then echo "The home directory ($dir) of user $user does not exist." else for file in $dir/.rhosts; do if [ ! -h "$file" -a -f "$file" ]; then echo ".rhosts file in $dir" fi done fi done

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Making global modifications to users' files without alerting the user community can result in unexpected outages and unhappy users. Therefore, it is recommended that a monitoring policy be established to report user .rhosts files and determine the action to be taken in accordance with site policy.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: container-optimized-oscos
Referencia: CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.2.14 Ensure no users have .rhosts files