cis-gcp-cos-6-2-13

name	cis-gcp-cos-6.2.13
description	Ensure users' .netrc Files are not group or world accessible
category	cis-gcp-cos
version	1.2.0
author	cyberstrike-official
tags	["cis","gcp","container-optimized-os","user-accounts","netrc"]
cis_id	6.2.13
cis_benchmark	CIS Google Container-Optimized OS Benchmark v1.2.0
tech_stack	["gcp","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

6.2.13 Ensure users' .netrc Files are not group or world accessible (Automated)

Description

While the system administrator can establish secure permissions for users' .netrc files, the users can easily override these.

Rationale

.netrc files may contain unencrypted passwords that may be used to attack other systems.

Audit Procedure

Run the following script and verify no results are returned:

#!/bin/bash

grep -E -v '^(root|halt|sync|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 $dir/.netrc; do
      if [ ! -h "$file" -a -f "$file" ]; then
        fileperm=$(ls -ld $file | cut -f1 -d" ")
        if [ $(echo $fileperm | cut -c5) != "-" ]; then
          echo "Group Read set on $file"
        fi
         [ $(  |  -c6) !=  ]; 
           
        
         [ $(  |  -c7) !=  ]; 
           
        
         [ $(  |  -c8) !=  ]; 
           
        
         [ $(  |  -c9) !=  ]; 
           
        
         [ $(  |  -c10) !=  ];