Enable memory leak listener

RendahLevel 1Otomatistomcat

Deskripsi

The JRE Memory Leak Prevention Listener provides work-arounds for known places where the Java Runtime environment uses the context class loader to load a singleton as this will cause a memory leak if a web application class loader happens to be the context class loader at the time. server.xml must contain the JreMemoryLeakPreventionListener. Reads $CATALINA_BASE (default /opt/tomcat) and $CATALINA_HOME (default: $CATALINA_BASE); set them for packaged installs (e.g. CATALINA_BASE=/var/lib/tomcat10, CATALINA_HOME=/usr/share/tomcat10). XML comments are ignored.

Cara pemeriksaan

Metode audit: Perintah shell

shell

B=${CATALINA_BASE:-/opt/tomcat}; H=${CATALINA_HOME:-$B}; O=${TOMCAT_OWNER:-tomcat_admin}; G=${TOMCAT_GROUP:-tomcat}; x(){ [ -r "$1" ] || return 1; awk 'BEGIN{RS="<!--"} NR==1{print;next} {i=index($0,"-->"); if(i) print substr($0,i+3)}' "$1" | tr '\n\t\r' '   ' | tr '<' '\n'; }; s=$(x "$B/conf/server.xml") || exit 1; printf '%s\n' "$s" | grep -Eq '^Listener[[:space:]].*org\.apache\.catalina\.core\.JreMemoryLeakPreventionListener' && echo compliant || echo noncompliant

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Add <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/> to server.xml. Restart Tomcat afterwards.

Properti

Sistem operasi: Apa saja
Tag: tomcathardening
Referensi: CIS Apache Tomcat 10.1 Benchmark v1.0.0 - 10.16 Enable memory leak listener

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shell

tmaegis scan --target tomcat