Ensure the IP Addresses for Listening for Requests Are Specified

낮음레벨 2자동apache

설명

The Apache Listen directive specifies the IP addresses and port numbers the Apache web server will listen for requests. Rather than be unrestricted to listen on all IP addresses available to the system, the specific IP address or addresses intended should be explicitly specified. Specifically, a Listen directive with no IP address specified, or with an IP address of zeros should not be used. Every Listen directive must name a specific IP address (not just a port, *, 0.0.0.0 or [::]). Reads the main configuration (APACHE_CONF overrides; default /etc/apache2/apache2.conf, /etc/httpd/conf/httpd.conf or /usr/local/apache2/conf/httpd.conf) and every Include/IncludeOptional file.

점검 방법

감사 방식: 셸 명령

shell

c=${APACHE_CONF:-}; if [ -z "$c" ]; then for f in /etc/apache2/apache2.conf /etc/httpd/conf/httpd.conf /usr/local/apache2/conf/httpd.conf /etc/apache2/httpd.conf; do [ -f "$f" ] && { c=$f; break; }; done; fi; [ -r "$c" ] || exit 1; R=$(awk 'tolower($1)=="serverroot"{v=$2; gsub(/"/,"",v); print v; exit}' "$c"); [ -n "$R" ] || R=$(dirname "$c"); shopt -s nocasematch; inc(){ local p g l; [ ${#FUNCNAME[@]} -lt 16 ] || return 0; p=$1; case $p in /*) ;; *) p=$R/$p;; esac; [ -d "$p" ] && p="$p/*"; for g in $p; do [ -f "$g" ] || continue; while IFS= read -r l || [ -n "$l" ]; do if [[ $l =~ ^[[:space:]]*include(optional)?[[:space:]]+\"?([^\"[:space:]]+) ]]; then inc "${BASH_REMATCH[2]}"; else printf '%s\n' "$l"; fi; done < "$g"; done; }; cfg=$(inc "$c" | sed -e 's/^[[:space:]]*//' -e '/^#/d' -e '/^$/d'); shopt -u nocasematch; printf '%s\n' "$cfg" | awk 'tolower($1)=="listen"{n++; v=$2; if(v~/^[0-9]+$/ || v~/^\*:/ || v~/^0\.0\.0\.0:/ || v~/^\[::\]:/) bad=1} END{print (n>0&&!bad)?"compliant":"noncompliant"}'

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Change each Listen to an explicit address, e.g. Listen 10.20.30.40:80. Then run apachectl configtest and reload Apache.

속성

운영 체제: 모두
태그: apachenetwork
참고 자료: CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 5.15 Ensure the IP Addresses for Listening for Requests Are Specified

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shell

tmaegis scan --target apache --level 2