Ensure the LimitRequestLine directive is Set to 8190 or less but not 0

NiedrigStufe 2Automatisiertapache

Beschreibung

Buffer Overflow attacks attempt to exploit an application by providing more data than the application buffer can contain. If the application allows copying data to the buffer to overflow the boundaries of the buffer, then the application is vulnerable to a buffer overflow. LimitRequestLine must be set and every value must be 1-8190. 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.

So wird geprüft

Prüfmethode: Shell-Befehl

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)=="limitrequestline"{n++; v=$2+0; if(!(v>=1 && v<=8190)) bad=1} END{print (n>0&&!bad)?"compliant":"noncompliant"}'

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Set LimitRequestLine 8190 (or lower, not 0). Then run apachectl configtest and reload Apache.

Eigenschaften

Betriebssysteme: Beliebig
Tags: apacherequest-limits
Referenz: CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 10.1 Ensure the LimitRequestLine directive is Set to 8190 or less but not 0

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shell

tmaegis scan --target apache --level 2