Ensure root PATH Integrity

中级别 2人工审核cos

说明

The root user can execute any command on the system and could be fooled into executing programs unintentionally if the PATH is not set correctly. Including the current working directory (.) or other writable directory in root 's executable path makes it likely that an attacker can gain superuser access by forcing an administrator operating as root to execute a Trojan horse program.

检查方式

审计方法: 人工审核

此项建议无法自动检查。当您传入 --include-manual 时，扫描结果会列出该项并附带这些说明。

Run the following script and verify no results are returned: #!/bin/bash PATH="$(sudo -Hiu root env | grep '^PATH' | cut -d= -f2)" echo "$PATH" | grep -q "::" && echo "Empty directory in PATH (::)" echo "$PATH" | grep -q ":$" && echo "Trailing : in PATH" for dir in $(echo "$PATH" | tr ":" " "); do if [ -d "$dir" ]; then ls -ldH "$dir" | awk 'substr($1,6,1) != "-" {print $9, "is group writable"} substr($1,9,1) != "-" {print $9, "is world writable"} $3 != "root" {print $9, "is not owned by root"}' else base_dir=$(echo "$dir" | cut -d "/" -f2) # Ignore if directory is on read-only partition rw=$(findmnt -T "/$base_dir" | sed '1d' | grep -v "\sro,") if [ -n "$rw" ]; then echo "$dir is not a directory" fi fi done

修复方式

修复方法: 操作指南或基础设施补丁

Correct or justify any items discovered in the Audit step.

属性

操作系统: 任意
标签: container-optimized-oscos
参考: CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.2.6 Ensure root PATH Integrity