Ensure no duplicate user names exist

中级别 1自动化cos

说明

Although the useradd program will not let you create a duplicate user name, it is possible for an administrator to manually edit the /etc/passwd file and change the user name. If a user is assigned a duplicate user name, it will create and have access to files with the first UID for that username in /etc/passwd . For example, if "test4" has a UID of 1000 and a subsequent "test4" entry has a UID of 2000, logging in as "test4" will use UID 1000. Effectively, the UID is shared, which is a security problem.

检查方式

审计方法: Shell 命令

shell

cut -d: -f1 /etc/passwd | sort | uniq -d | grep -q . && echo noncompliant || echo compliant

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

Based on the results of the audit script, establish unique user names for the users. File ownerships will automatically reflect the change as long as the users have unique UIDs.

属性

操作系统: 任意
标签: container-optimized-oscos
参考: CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.2.18 Ensure no duplicate user names exist

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target cos