Ensure legacy NIS markers are removed

高等級 1自動化aix

說明

If NIS has been de-installed in the environment, or has historically been used, ensure the + markers are removed from/etc/passwd and /etc/group. The + entries in /etc/passwd and /etc/group were used as markers to insert data from a NIS map. These entries may provide an avenue for attackers to gain privileged access on the system. The + entries must be deleted if they still exist. Audit: automated read-only check derived from the CIS audit procedure; it prints "compliant" when the control is met.

檢查方式

稽核方法: Shell 指令

shell

command -v grep >/dev/null 2>&1 || exit 1; out=$( { grep "^+" /etc/passwd /etc/group ; } 2>/dev/null ); [ -z "$out" ] && echo compliant || printf '%s\n' "$out" | head -n 20

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

Examine the /etc/passwd and /etc/group files: grep "^+" /etc/passwd /etc/group If the above command yields output, delete the + line: vi /etc/passwd vi /etc/group

屬性

作業系統: 不限
標籤: aixhardening
參考資料: CIS IBM AIX 7 Benchmark v1.2.0 - 4.2.3 Ensure legacy NIS markers are removed

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target aix