Ensure sendmail is not in use

中レベル 1自動aix

説明

The sendmail daemon means that the system can operate as a mail server. sendmail is a service with many historical vulnerabilities and where possible should be disabled. Unless a system is specifically designated to act as a mail server, it is recommended that the sendmail fileset be removed to reduce the potential attack surface. Audit: the sendmail start line in /etc/rc.tcpip must be commented out and the sendmail subsystem must not be active.

チェック方法

監査方法: シェルコマンド

shell

command -v lssrc >/dev/null 2>&1 || exit 1; [ -r /etc/rc.tcpip ] || exit 1; out=$( { grep -E "^[[:blank:]]*start[[:blank:]]+/usr/(sbin|lib)/sendmail([[:blank:]]|$)" /etc/rc.tcpip; lssrc -s sendmail | awk 'NR>1 && $NF=="active"' ; } 2>/dev/null ); [ -z "$out" ] && echo compliant || printf '%s\n' "$out" | head -n 20

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

Run the following command to remove the software: # /usr/sbin/installp -u bos.net.tcp.sendmail bos.net.tcp.server - OR - - IF - the bos.net.tcp.sendmail fileset is required as a dependency: Run the following script to stop and disable sendmail #!/usr/bin/ksh DAEMONS="sendmail" for l_daemon in $DAEMONS; do /usr/sbin/chrctcp -d $l_daemon /usr/bin/stopsrc -s $l_daemon done

プロパティ

オペレーティングシステム: すべて
タグ: aixservices
参照: CIS IBM AIX 7 Benchmark v1.2.0 - 4.3.2.12 Ensure sendmail is not in use

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