Linux distributions
TMA-SLES15-6.3.3.14
Ensure events that modify the system's Mandatory Access Controls are collected
Описание
Monitor AppArmor, an implementation of mandatory access controls. The parameters below monitor any write access (potential additional, deletion or modification of files in the directory) or attribute changes to the /etc/apparmor/ and /usr/share/apparmor/ directories. Note: If a different Mandatory Access Control method is used, changes to the corresponding directories should be audited.
Как проверяется
Метод проверки: Команда оболочки
alt0() { o=$(bash -c 'awk '"'"'/^ *-w/ &&(/\/etc\/apparmor/ ||/\/usr\/share\/apparmor/) &&/ +-p *wa/ &&(/ key= *[!-~]* *$/||/ -k *[!-~]* *$/)'"'"' /etc/audit/rules.d/*.rules' 2>&1); printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /etc/apparmor -p wa -k MAC-policy' || { echo step1: missing '-w /etc/apparmor -p wa -k MAC-policy'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /usr/share/apparmor -p wa -k MAC-policy' || { echo step1: missing '-w /usr/share/apparmor -p wa -k MAC-policy'; return 1; }; o=$(bash -c 'auditctl -l | awk '"'"'/^ *-w/ &&(/\/etc\/apparmor/ ||/\/usr\/share\/apparmor/) &&/ +-p *wa/ &&(/ key= *[!-~]* *$/||/ -k *[!-~]* *$/)'"'"'' 2>&1); printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /etc/apparmor -p wa -k MAC-policy' || { echo step2: missing '-w /etc/apparmor -p wa -k MAC-policy'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /usr/share/apparmor -p wa -k MAC-policy' || { echo step2: missing '-w /usr/share/apparmor -p wa -k MAC-policy'; return 1; }; }; if alt0; then echo compliant; fi- Ожидаемый вывод
compliant
Как исправляется
Метод исправления: Рекомендация или патч инфраструктуры
Note: If a different Mandatory Access Control method is used, changes to the corresponding directories should be audited. Edit or create a file in the /etc/audit/rules.d/ directory, ending in .rules extension, with the relevant rules to monitor events that modify the system's Mandatory Access Controls. Example: # printf " -w /etc/apparmor -p wa -k MAC-policy -w /usr/share/apparmor -p wa -k MAC-policy " >> /etc/audit/rules.d/50-MAC-policy.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
Свойства
- Операционные системы
- sles-15
- Теги
- cis-convertedlinux
- Источник
- CIS SUSE Linux Enterprise 15 Benchmark v2.0.1 - 6.3.3.14
Проверить этот хост
Выполните команду на компьютере, аудит которого вам разрешён. Сканирование работает только на чтение.
tmaegis scan --target linux --level 2