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More rules for apache

Apache HTTP Server

TMA-APACHE-7.7

Ensure SSL Compression is not Enabled

MediumLevel 1Automatedapache

Description

The SSLCompression directive controls whether SSL compression is used by Apache when serving content over HTTPS. It is recommended that the SSLCompression directive be set to off. SSLCompression must be absent or off (CRIME). 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. CIS marks this recommendation Manual; the automated check implements its audit procedure.

How it is checked

Audit method: Shell command

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)=="sslcompression" && tolower($2)!="off"{bad=1} END{print bad?"noncompliant":"compliant"}'
Expected output
compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Remove SSLCompression on (or set SSLCompression off). Then run apachectl configtest and reload Apache.

Properties

Operating systems
Any
Tags
apachetls
Reference
CIS Apache HTTP Server 2.4 Benchmark v2.4.0 - 7.7 Ensure SSL Compression is not Enabled

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell
tmaegis scan --target apache