How To Disable SSLv3 to Mitigate Against POODLE Exploit for JIRA

Use Case

If you have enabled the SSL connector for JIRA using <jira_install>/conf/server.xml, the default settings do not block SSLv3 connections which can be exploited by the POODLE fallback attack. There are two changes that need to be made to the SSL connector. By default, the SSL connector sets sslProtocol="TLS" which starts both TLS connectors and SSLv3 connectors. You can tell if you are affected by opening <jira_install>/conf/server.xml and find the SSL connector, example follows:

<Connector port="8443" maxHttpHeaderSize="8192"
           maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
           enableLookups="false" disableUploadTimeout="true"
           acceptCount="100" scheme="https" secure="true"
           clientAuth="false" sslProtocol="TLS" SSLEnabled="true"
           URIEncoding="UTF-8" keystorePass="<MY_CERTIFICATE_PASSWORD>"/>

Resolution

  • Edit the SSL connector in server.xml as follows:

    <Connector port="8443" maxHttpHeaderSize="8192"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" disableUploadTimeout="true"
               acceptCount="100" scheme="https" secure="true"
               clientAuth="false" sslEnabledProtocols="TLSv1,TLSv1.1,TLSv1.2" SSLEnabled="true"
               URIEncoding="UTF-8" keystorePass="<MY_CERTIFICATE_PASSWORD>"/>
  • At this point you can start JIRA and use something like SSLScan to verify that connections can only be made through TLS and not SSLv3.


Last modified on Jun 6, 2016

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