TMA-AIX-2.4

Ensure Unauthorized Applications are reported

高レベル 1自動aix

説明

At Level 1, utilize Trusted Execution (TE) to log execution of applications not yet allowlisted. This can be used to update the allowlist (TSD - /etc/security/tsd/tsd.dat) so that, at Profile Level 2, non-listed applications are actually prevented from executing. Trusted Execution (TE) provides an additional layer of access controls to processes on top of the base Discretionary Access Controls. Monitoring how processes access system resources can improve awareness of system integrity. Audit: automated read-only check derived from the CIS audit procedure; it prints "compliant" when the control is met.

チェック方法

監査方法: シェルコマンド

shell

command -v trustchk >/dev/null 2>&1 || exit 1; out=$(trustchk -p TE CHKEXEC 2>/dev/null) || exit 1; r=compliant; for p in "^TE=ON$" "^CHKEXEC=ON$"; do printf '%s\n' "$out" | grep -Eq "$p" || r="missing $p"; done; grep -Eq "^[[:blank:]]*kern\.info[[:blank:]]" /etc/syslog.conf 2>/dev/null || r="kern.info not collected in /etc/syslog.conf"; echo "$r"

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

1. Run the following command: # /usr/sbin/trustchk -p TE=ON CHKEXEC=ON 2. If logging for kern.info events is not already configured: Run the following commands: # /usr/bin/mkdir -p /var/log/syslog # /usr/bin/touch /var/log/syslog/kernel.log # print "kern.info /var/log/syslog/kernel.log rotate time 1d files 30 compress" >> /etc/syslog.conf # /usr/bin/refresh -s syslogd || /usr/bin/startsrc -s syslogd Note: Log retention periods should be configured as per site policy.

プロパティ

オペレーティングシステム: すべて
タグ: aixhardening
参照: CIS IBM AIX 7 Benchmark v1.2.0 - 2.4 Ensure Unauthorized Applications are reported

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target aix