TMA-TOMCAT-6.5

Ensure 'sslProtocol' is Configured Correctly for Secure Connectors

TinggiLevel 1Otomatistomcat

Deskripsi

The TLSv1.0 and TLSv1.1 protocols should be disabled via the sslProtocol directive. The TLSv1.0 protocol is vulnerable to information disclosure and both protocols lack support for modern cryptographic algorithms including authenticated encryption. The only SSL/TLS protocols which should be allowed are TLSv1.2 and the newer TLSv1.3 protocol. Every Connector with SSLEnabled="true" must set sslProtocol (on the Connector or its SSLHostConfig, also accepting protocols=) to TLSv1.2, TLSv1.3 or TLSv1.2+TLSv1.3. Compliant when no TLS connector exists. 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" | awk 'function at(n,  r){if(match($0,"[[:space:]]" n "[[:space:]]*=[[:space:]]*[\"\047][^\"\047]*")){r=substr($0,RSTART,RLENGTH); sub(/^[^=]*=[[:space:]]*./,"",r); return r} return "-unset-"} function fin(){ if(!inc) return; inc=0; if(se){ n=split(pr,t,/[+, ]+/); k=0; for(i=1;i<=n;i++){ if(t[i]=="") continue; k++; if(t[i]!="TLSv1.2" && t[i]!="TLSv1.3") bad=1 } if(k==0) bad=1 } } /^Connector[[:space:]]/{fin(); inc=1; se=(at("SSLEnabled")=="true"); sc=at("scheme"); sx=at("secure"); pr=at("sslProtocol"); if(pr=="-unset-") pr=""; if($0~/\/>[[:space:]]*$/) fin(); next} /^SSLHostConfig[[:space:]]/ && inc {v=at("sslProtocol"); if(v=="-unset-") v=at("protocols"); if(v!="-unset-") pr=pr "," v} /^\/Connector>/{fin()} END{fin(); print bad?"noncompliant":"compliant"}'

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Set <SSLHostConfig sslProtocol="TLS" protocols="TLSv1.2+TLSv1.3"> (or sslProtocol="TLSv1.2+TLSv1.3") on every TLS connector in server.xml. Restart Tomcat afterwards.

Properti

Sistem operasi: Apa saja
Tag: tomcattls
Referensi: CIS Apache Tomcat 10.1 Benchmark v1.0.0 - 6.5 Ensure 'sslProtocol' is Configured Correctly for Secure Connectors

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shell

tmaegis scan --target tomcat