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Apache HTTP Server

TMA-APACHE-9.5

Ensure the Timeout Limits for Request Headers is Set to 40 or Less

Trung bìnhCấp 1Tự độngapache

Mô tả

The RequestReadTimeout directive allows configuration of timeout limits for client requests. The header portion of the directive provides for an initial timeout value, a maximum timeout and a minimum rate. The minimum rate specifies that after the initial timeout, the server will wait an additional 1 second for each N bytes received. The recommended setting is to have a maximum timeout of 40 seconds or less. Every RequestReadTimeout must limit the header timeout to 40 seconds or less (upper bound of a range); without RequestReadTimeout the mod_reqtimeout default (header=20-40) is compliant when the module is loaded. 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. Uses the module list from apachectl -M (apache2ctl/httpd; needs root). CIS marks this recommendation Manual; the automated check implements its audit procedure.

Cách kiểm tra

Phương pháp kiểm tra: Lệnh shell

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 '/^$/d'); shopt -u nocasematch; b=$(command -v apache2ctl || command -v apachectl || command -v httpd) || exit 1; m=$("$b" ${APACHE_CONF:+-f "$APACHE_CONF"} -M 2>/dev/null) || exit 1; printf '%s\n' "$m" | grep -q reqtimeout_module && r=1 || r=0; printf '%s\n' "$cfg" | awk -v r="$r" 'tolower($1)=="requestreadtimeout"{n++; for(i=2;i<=NF;i++){t=tolower($i); if(t~/^header=/){x=t; sub(/^[a-z]+=/,"",x); sub(/,.*/,"",x); k=split(x,y,"-"); if(y[k]+0>40 || y[k]+0==0) bad=1}}} END{print ((n>0 && !bad) || (n==0 && r))?"compliant":"noncompliant"}'
Đầu ra mong đợi
compliant

Cách khắc phục

Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng

Load mod_reqtimeout and set e.g. RequestReadTimeout header=20-40,MinRate=500 body=20,MinRate=500. Then run apachectl configtest and reload Apache.

Thuộc tính

Hệ điều hành
Bất kỳ
Thẻ
apachedos
Tham chiếu
CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 9.5 Ensure the Timeout Limits for Request Headers is Set to 40 or Less

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shell
tmaegis scan --target apache