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Apache HTTP Server

TMA-APACHE-4.1

Ensure Access to OS Root Directory Is Denied By Default

CaoCấp 1Tự độngapache

Mô tả

The Apache Directory directive allows for directory specific configuration of access controls and many other features and options. One important usage is to create a default deny policy that does not allow access to operating system directories and files, except for those specifically allowed. This is done by denying access to the OS root directory. The <Directory /> block must contain a single "Require all denied" and no Allow/Deny (or the legacy Order deny,allow + Deny from all with no Allow/Require). 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.

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 '/^$/d'); shopt -u nocasematch; printf '%s\n' "$cfg" | awk '{l=tolower($0); $0=l} /^<directory[[:space:]]/{dd++; if(dd==1){x=$2; gsub(/[">]/,"",x); r=(x=="/"); if(r) f=1}; next} /^<\/directory>/{dd--; if(dd==0) r=0; next} r && $1=="require"{nr++; if($0~/^require[[:space:]]+all[[:space:]]+denied/) rd++} r && $1=="allow"{al++} r && $1=="deny"{dn++; if($0~/from[[:space:]]+all/) dfa=1} r && $1=="order"{no++; if($0~/deny,[[:space:]]*allow/) oda=1} END{print (f && ((nr==1&&rd==1&&al==0&&dn==0) || (no==1&&oda&&dfa&&al==0&&nr==0)))?"compliant":"noncompliant"}'
Đầu ra mong đợi
compliant

Cách khắc phục

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

In the main configuration: <Directory /> ... Require all denied ... </Directory> (remove Allow/Deny/other Require lines). Then run apachectl configtest and reload Apache.

Thuộc tính

Hệ điều hành
Bất kỳ
Thẻ
apacheaccess-control
Tham chiếu
CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 4.1 Ensure Access to OS Root Directory Is Denied By Default

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shell
tmaegis scan --target apache