TMA-COS-6.2.10
Ensure users' dot files are not group or world writable
Descrição
While the system administrator can establish secure permissions for users' "dot" files, the users can easily override these. Group or world-writable user configuration files may enable malicious users to steal or modify other users' data or to gain another user's system privileges.
Como é verificado
Método de auditoria: Revisão manual
Esta recomendação não pode ser verificada automaticamente. Uma varredura a lista com estas instruções quando você passa --include-manual.
Run the following script and verify no results are returned: #!/bin/bash grep -E -v '^(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 $dir/.[A-Za-z0-9]*; do if [ ! -h "$file" -a -f "$file" ]; then fileperm=$(ls -ld $file | cut -f1 -d" ") if [ $(echo $fileperm | cut -c6) != "-" ]; then echo "Group Write permission set on file $file" fi if [ $(echo $fileperm | cut -c9) != "-" ]; then echo "Other Write permission set on file $file" fi fi done fi done
Como é corrigido
Método de correção: Orientação ou patch de infraestrutura
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 dot file permissions and determine the action to be taken in accordance with site policy.
Propriedades
- Sistemas operacionais
- Qualquer
- Tags
- container-optimized-oscos
- Referência
- CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.2.10 Ensure users' dot files are not group or world writable