Christopher Lamb via FreeIPA-users wrote: > Hi > > A recent security scan has shown that our FreeIPA server is using 3DES > SSL ciphers on port 8443, which I understand to be used by the DogTag > PKI component of IPA. > > The question is, how can I configure the SSL Ciphers used by DogTag (e.g > to remove 3DES ciphers)? > > I have found several files configuration files which initially look > promising > > 1) /usr/share/pki/server/conf/ciphers.info > This has defaults for the setting sslRangeCiphers, but I guess this is > over-ridden by one of the configs below. Interestingly this file seems > to disable all 3DES ciphers. > > 2) /usr/share/pki/server/conf/server.xml > This has settings using constants such as TOMCAT_SSL_RANGE_CIPHERS, > which I have no idea where they come from. > sslVersionRangeStream="[TOMCAT_SSL_VERSION_RANGE_STREAM]" > sslVersionRangeDatagram="[TOMCAT_SSL_VERSION_RANGE_DATAGRAM]" > sslRangeCiphers="[TOMCAT_SSL_RANGE_CIPHERS]" > > 3) /etc/pki/pki-tomcat/server.xml > This file has an explicit list of ciphers > sslRangeCiphers="-TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,-TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,+TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,+TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,+TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,-TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,+TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,+TLS_RSA_WITH_3DES_EDE_CBC_SHA,+TLS_RSA_WITH_AES_128_CBC_SHA,+TLS_RSA_WITH_AES_256_CBC_SHA,+TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,+TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,-TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,-TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,-TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,+TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA,+TLS_DHE_DSS_WITH_AES_128_CBC_SHA,+TLS_DHE_DSS_WITH_AES_256_CBC_SHA,+TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,+TLS_DHE_RSA_WITH_AES_128_CBC_SHA,+TLS_DHE_RSA_WITH_AES_256_CBC_SHA,+TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,+TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,+TLS_RSA_WITH_AES_128_CBC_SHA256,+TLS_RSA_WITH_AES_256_CBC_SHA256,+TLS_RSA_WITH_AES_128_GCM_SHA256,+TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,+TLS_DHE_DSS_WITH_AES_128_GCM_SHA256,+TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,+TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,+TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,+TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,+TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,+TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256" > > However I am not sure if this file, or 2) above is being used by DogTag. > > We are running: > DogTag on Apache Tomcat/7.0.76 > pki-server 10.5.9-6 > ipa-server 4.6.4 > OEL 7.2 (Maipo)
server.xml is the way to change this. Replace the + with a - and restart the service. You'll need to make this change on all masters with a CA, and all future masters with a CA. As an aside, generally speaking we don't recommend mixing packages between OS releases. rob _______________________________________________ FreeIPA-users mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedorahosted.org/archives/list/[email protected]
