Ensure users' .netrc Files are not group or world accessible

低等級 2人工審核cos

說明

While the system administrator can establish secure permissions for users' .netrc files, the users can easily override these. .netrc files may contain unencrypted passwords that may be used to attack other systems.

檢查方式

稽核方法: 人工審核

此項建議無法自動檢查。當您傳入 --include-manual 時，掃描結果會列出此項目並附帶這些說明。

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 $dir/.netrc; do if [ ! -h "$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 if [ $(echo $fileperm | cut -c6) != "-" ]; then echo "Group Write set on $file" fi if [ $(echo $fileperm | cut -c7) != "-" ]; then echo "Group Execute set on $file" fi if [ $(echo $fileperm | cut -c8) != "-" ]; then echo "Other Read set on $file" fi if [ $(echo $fileperm | cut -c9) != "-" ]; then echo "Other Write set on $file" fi if [ $(echo $fileperm | cut -c10) != "-" ]; then echo "Other Execute set on $file" fi fi done fi done

修補方式

修補方法: 操作指南或基礎設施修補檔

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 .netrc file permissions and determine the action to be taken in accordance with site policy.

屬性

作業系統: 不限
標籤: access-controlcontainer-optimized-oscos
參考資料: CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.2.13 Ensure users' .netrc Files are not group or world accessible