TMA-NGINX-3.2

Ensure access logging is enabled

MittelStufe 1Automatisiertnginx

Beschreibung

The access_log directive enables the logging of client requests. While NGINX enables this by default, it allows granular control per server or location context. Based on enterprise requirements, the log should be enriched with relevant variables or converted to structured JSON format for modern SIEM integration. Refer to Recommendation 3.1 for detailed configuration of log formats and variables. Fails when access_log off is used outside a location block (in the http or a server context); location-level exclusions for static assets are allowed. Evaluated on the merged configuration printed by `nginx -T` (all included files; needs permission to read them). CIS marks this recommendation Manual; the automated check implements its audit procedure.

So wird geprüft

Prüfmethode: Shell-Befehl

shell

out=$(nginx -T 2>/dev/null) || exit 1; printf '%s\n' "$out" | awk '{l=$0; o=""; q=""; for(i=1;i<=length(l);i++){c=substr(l,i,1); if(q!=""){o=o c; if(c==q) q=""; continue} if(c=="\""||c=="\047"){q=c; o=o c; continue} if(c=="#") break; if(c==";"||c=="{"){print o c; o=""; continue} if(c=="}"){if(o~/[^[:space:]]/) print o; print "}"; o=""; continue} o=o c} if(o~/[^[:space:]]/) print o}' | awk 'function a(i,  x){x=$i; sub(/;$/,"",x); gsub(/["\047]/,"",x); return x} function inb(n,  i){for(i=1;i<=sp;i++) if(st[i]==n) return 1; return 0} $1=="access_log" && a(2)=="off" && !inb("location"){bad=1} {o=gsub(/\{/,"{"); c=gsub(/\}/,"}"); while(o-->0){sp++; b=$1; sub(/\{.*/,"",b); st[sp]=b} while(c-->0 && sp>0) sp--} END{print bad?"noncompliant":"compliant"}'

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Replace 'access_log off;' at http/server level with 'access_log /var/log/nginx/access.log <format>;'. Then run nginx -t and reload nginx.

Eigenschaften

Betriebssysteme: Beliebig
Tags: nginxlogging
Referenz: CIS NGINX Benchmark v3.0.0 - 3.2 Ensure access logging is enabled

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shell

tmaegis scan --target nginx