Ensure Address space layout randomization is enabled

MédiaNível 1Automatizadaaix

Descrição

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.

Como é verificado

Método de auditoria: Comando shell

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"

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

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.

Propriedades

Sistemas operacionais: Qualquer
Tags: aixhardening
Referência: CIS IBM AIX 7 Benchmark v1.2.0 - 4.9.1 Ensure Address space layout randomization is enabled

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target aix