Ensure session initiation information is collected

НизкийУровень 2Автоматическаяlinux

Описание

Monitor session initiation events. The parameters in this section track changes to the files associated with session events. • /var/run/utmp - tracks all currently logged in users. • /var/log/wtmp - file tracks logins, logouts, shutdown, and reboot events. • /var/log/btmp - keeps track of failed login attempts and can be read by entering the command /usr/bin/last -f /var/log/btmp. All audit records will be tagged with the identifier "session."

Как проверяется

Метод проверки: Команда оболочки

shell

alt0() { o=$(bash -c 'auditctl -l | grep -Ps -- '"'"'(\/var\/run\/utmp|\/var\/log\/wtmp|\/var\/log\/btmp)'"'"'' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-a always,exit -F path=/var/run/utmp -F perm=wa' || { echo step1: missing '-a always,exit -F path=/var/run/utmp -F perm=wa'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-a always,exit -F path=/var/log/wtmp -F perm=wa' || { echo step1: missing '-a always,exit -F path=/var/log/wtmp -F perm=wa'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-a always,exit -F path=/var/log/btmp -F perm=wa' || { echo step1: missing '-a always,exit -F path=/var/log/btmp -F perm=wa'; return 1; }; o=$(bash -c 'grep -Ps -- '"'"'(\/var\/run\/utmp|\/var\/log\/wtmp|\/var\/log\/btmp)'"'"' /etc/audit/rules.d/*.rules' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '/etc/audit/rules.d/50-session.rules:-a always,exit -F arch=b64 -S all -F' || { echo step2: missing '/etc/audit/rules.d/50-session.rules:-a always,exit -F arch=b'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'path=/var/run/utmp -F perm=wa -k session' || { echo step2: missing 'path=/var/run/utmp -F perm=wa -k session'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '/etc/audit/rules.d/50-session.rules:-a always,exit -F arch=b64 -S all -F' || { echo step2: missing '/etc/audit/rules.d/50-session.rules:-a always,exit -F arch=b'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'path=/var/log/wtmp -F perm=wa -k session' || { echo step2: missing 'path=/var/log/wtmp -F perm=wa -k session'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '/etc/audit/rules.d/50-session.rules:-a always,exit -F arch=b64 -S all -F' || { echo step2: missing '/etc/audit/rules.d/50-session.rules:-a always,exit -F arch=b'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'path=/var/log/btmp -F perm=wa -k session' || { echo step2: missing 'path=/var/log/btmp -F perm=wa -k session'; return 1; }; }; if alt0; then echo compliant; fi

Ожидаемый вывод: compliant

Как исправляется

Метод исправления: Рекомендация или патч инфраструктуры

Note: • The -w option is deprecated and the rule should be updated in accordance with the Remediation Procedure. • For best performance, the arch field should be supplied in the rule. The individual permissions will cause the selection of specific system calls that use that kind of access. Not supplying the arch will cause the selection of all system calls which will affect performance as all system calls will be evaluated. 1. Edit or create a file in the /etc/audit/rules.d/ directory, ending in .rules extension, with the relevant rules to monitor session initiation information. Example: # printf " -a always,exit -F arch=b64 -S all -F path=/var/run/utmp -F perm=wa -k session -a always,exit -…

Свойства

Операционные системы: sles-16
Теги: cis-convertedlinux
Источник: CIS SUSE Linux Enterprise 16 Benchmark v1.0.0 - 6.2.3.20

Проверить этот хост

Выполните команду на компьютере, аудит которого вам разрешён. Сканирование работает только на чтение.

shell

tmaegis scan --target linux --level 2