Ensure login and logout events are collected

BaixaNível 2Automatizadalinux

Descrição

Monitor login and logout events. The parameters below track changes to files associated with login/logout events. • /var/log/lastlog - maintain records of the last time a user successfully logged in. • /var/run/faillock - directory maintains records of login failures via the pam_faillock module.

Como é verificado

Método de auditoria: Comando shell

shell

alt0() { o=$(bash -c 'awk '"'"'/^ *-w/ &&(/\/var\/log\/lastlog/ ||/\/var\/run\/faillock/) &&/ +-p *wa/ &&(/ key= *[!-~]* *$/||/ -k *[!-~]* *$/)'"'"' /etc/audit/rules.d/*.rules' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /var/log/lastlog -p wa -k logins' || { echo step1: missing '-w /var/log/lastlog -p wa -k logins'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /var/run/faillock -p wa -k logins' || { echo step1: missing '-w /var/run/faillock -p wa -k logins'; return 1; }; o=$(bash -c 'auditctl -l | awk '"'"'/^ *-w/ &&(/\/var\/log\/lastlog/ ||/\/var\/run\/faillock/) &&/ +-p *wa/ &&(/ key= *[!-~]* *$/||/ -k *[!-~]* *$/)'"'"'' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /var/log/lastlog -p wa -k logins' || { echo step2: missing '-w /var/log/lastlog -p wa -k logins'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /var/run/faillock -p wa -k logins' || { echo step2: missing '-w /var/run/faillock -p wa -k logins'; return 1; }; }; if alt0; then echo compliant; fi

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

Edit or create a file in the /etc/audit/rules.d/ directory, ending in .rules extension, with the relevant rules to monitor login and logout events. Example: # printf " -w /var/log/lastlog -p wa -k logins -w /var/run/faillock -p wa -k logins " >> /etc/audit/rules.d/50-login.rules Merge and load the rules into active configuration: # augenrules --load Check if reboot is required. # if [[ $(auditctl -s | grep "enabled") =~ "2" ]]; then printf "Reboot required to load rules\n"; fi

Propriedades

Sistemas operacionais: sles-15
Tags: cis-convertedlinux
Referência: CIS SUSE Linux Enterprise 15 Benchmark v2.0.1 - 6.3.3.12

Verificar este host

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

shell

tmaegis scan --target linux --level 2