Ensure Address space layout randomization is enabled

보통레벨 1자동aix

설명

Address space layout randomization (ASLR) is an exploit mitigation technique which randomly arranges the address space of key data areas of a process. The recommendations here are focused on a system level rather than enterprise. The controls mention both user and administrator accounts. For the purpose of this benchmark, and account is administrator when the AIX user attribute admin is true. Audit: automated read-only check derived from the CIS audit procedure; it prints "compliant" when the control is met.

점검 방법

감사 방식: 셸 명령

shell

command -v vmo >/dev/null 2>&1 || exit 1; out=$(vmo -aF 2>/dev/null) || exit 1; r=compliant; for p in '^[[:blank:]]*aslr[[:blank:]]*=[[:blank:]]*2$' '^[[:blank:]]*aslr32[[:blank:]]*=[[:blank:]]*"?0"?$' '^[[:blank:]]*aslr64[[:blank:]]*=[[:blank:]]*"?0"?$' '^[[:blank:]]*aslr32r[[:blank:]]*=[[:blank:]]*333$' '^[[:blank:]]*aslr64r[[:blank:]]*=[[:blank:]]*33333$' '^[[:blank:]]*aslr_r[[:blank:]]*=[[:blank:]]*0$'; do printf '%s\n' "$out" | grep -Eq -- "$p" || r="missing: $p"; done; echo "$r"

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Run the following command to enable ASLR for all programs: # /usr/sbin/vmo -r -o aslr=2 -o aslr32=0 -o aslr32r=333 -o aslr64=0 -o aslr64r=33333 -o alsr_r=0 A reboot is required before this change takes effect.

속성

운영 체제: 모두
태그: aixhardening
참고 자료: CIS IBM AIX 7 Benchmark v1.2.0 - 4.9.1 Ensure Address space layout randomization is enabled

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target aix