SSL

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Overview

This page describes the SSL configuration used by PKI. The SSL configuration is stored in /var/lib/pki/pki-tomcat/conf/server.xml as part of Tomcat JSS configuration.

Please note that in the current implementation the SSL settings are global, meaning it will affect PKI as a server and as a client (to other PKI servers or LDAP servers).

Default SSL Configuration

By default PKI will use the following SSL configuration.

General configuration

  • Strict ciphers: true
  • Client certificate authentication: want
  • server cert nickname file: /var/lib/pki/pki-tomcat/conf/serverCertNick.conf
  • password file: /var/lib/pki/pki-tomcat/conf/password.conf
  • password class: org.apache.tomcat.util.net.jss.PlainPasswordFile
  • NSS database: /var/lib/pki/pki-tomcat/alias

OCSP

  • OCSP: enabled
  • OCSP responder URL: http://$HOSTNAME:9080/ca/ocsp
  • OCSP responder certificate: ocspSigningCert cert-pki-ca
  • Cache size: 1000
  • Minimum cache entry duration: 60 seconds
  • Maximum cache entry duration: 120 seconds
  • Timeout: 10 seconds

SSL options

  • SSL2: disabled
  • SSL3: disabled
  • TLS: enabled

Note: If the SSL range ciphers parameters are defined, the SSL options parameters will be ignored.

SSL2 ciphers

Disabled:

  • SSL2_RC4_128_WITH_MD5
  • SSL2_RC4_128_EXPORT40_WITH_MD5
  • SSL2_RC2_128_CBC_WITH_MD5
  • SSL2_RC2_128_CBC_EXPORT40_WITH_MD5
  • SSL2_DES_64_CBC_WITH_MD5
  • SSL2_DES_192_EDE3_CBC_WITH_MD5

Enabled: none

SSL3 ciphers

Disabled:

  • SSL3_FORTEZZA_DMS_WITH_NULL_SHA
  • SSL3_FORTEZZA_DMS_WITH_RC4_128_SHA
  • SSL3_RSA_EXPORT_WITH_RC4_40_MD5
  • SSL3_RSA_WITH_DES_CBC_SHA
  • SSL3_RSA_EXPORT_WITH_RC2_CBC_40_MD5
  • SSL3_FORTEZZA_DMS_WITH_FORTEZZA_CBC_SHA
  • SSL_RSA_FIPS_WITH_DES_CBC_SHA
  • SSL3_RSA_WITH_NULL_MD5
  • TLS_RSA_EXPORT1024_WITH_RC4_56_SHA
  • TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA

Enabled:

  • SSL3_RSA_WITH_RC4_128_SHA
  • SSL3_RSA_WITH_3DES_EDE_CBC_SHA
  • SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA

TLS ciphers

Disabled:

  • TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
  • TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDH_ECDSA_WITH_AES_256_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

Enabled:

  • 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_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_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

SSL version range for stream protocols

Minimum: tls1_1 (tls1_0 -> tls1_1 per https://pagure.io/dogtagpki/issue/2855)

Maximum: tls1_2

Valid values: ssl3, tls1_0, tls1_1, tls1_2

SSL version range for datagram protocols

Minimum: tls1_1

Maximum: tls1_2

Valid values: tls1_1, tls1_2

SSL range ciphers

RSA Servers

This list defines the SSL ciphers for the above SSL version ranges. This parameter overrides the SSL options parameters above for non-ECC ciphers.

Disabled:

  • 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_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_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_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_DSS_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_RSA_WITH_AES_128_GCM_SHA256
  • TLS_RSA_WITH_3DES_EDE_CBC_SHA (enabled -> disabled per https://pagure.io/dogtagpki/issue/2821)

Enabled:

ECC Servers

Similarly, the following list defines the SSL ciphers for the above SSL version ranges for ECC ciphers.

Disabled:

  • 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_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_128_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_DSS_WITH_AES_128_GCM_SHA256
  • 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_DHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_RSA_WITH_AES_128_CBC_SHA256
  • TLS_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

Enabled:

  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA256

sslget Command-Line Tool

Disabled:

  • TLS_AES_256_GCM_SHA384 (not FIPS)
  • TLS_CHACHA20_POLY1305_SHA256 (not FIPS)
  • TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA (3DES)
  • TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 (disabled by default)
  • TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 (disabled by default)
  • TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (disabled by default)
  • TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 (disabled by default)
  • TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA (disabled by default)
  • TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA (disabled by default)
  • TLS_DHE_DSS_WITH_DES_CBC_SHA (disabled by default)
  • TLS_DHE_DSS_WITH_RC4_128_SHA (disabled by default)
  • TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA (3DES)
  • TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA (disabled by default)
  • TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA (disabled by default)
  • TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (not FIPS)
  • TLS_DHE_RSA_WITH_DES_CBC_SHA (disabled by default)
  • TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA (disabled by default)
  • TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA (disabled by default)
  • TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA (disabled by default)
  • TLS_ECDH_ECDSA_WITH_NULL_SHA (disabled by default)
  • TLS_ECDH_ECDSA_WITH_RC4_128_SHA (disabled by default)
  • TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA (3DES)
  • TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (not FIPS)
  • TLS_ECDHE_ECDSA_WITH_NULL_SHA (disabled by default)
  • TLS_ECDHE_ECDSA_WITH_RC4_128_SHA (disabled by default)
  • TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA (3DES)
  • TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (not FIPS)
  • TLS_ECDHE_RSA_WITH_NULL_SHA (disabled by default)
  • TLS_ECDHE_RSA_WITH_RC4_128_SHA (disabled by default)
  • TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA (disabled by default)
  • TLS_ECDH_RSA_WITH_AES_128_CBC_SHA (disabled by default)
  • TLS_ECDH_RSA_WITH_AES_256_CBC_SHA (disabled by default)
  • TLS_ECDH_RSA_WITH_NULL_SHA (disabled by default)
  • TLS_ECDH_RSA_WITH_RC4_128_SHA (disabled by default)
  • TLS_RSA_WITH_3DES_EDE_CBC_SHA (3DES)
  • TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (disabled by default)
  • TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (disabled by default)
  • TLS_RSA_WITH_DES_CBC_SHA (disabled by default)
  • TLS_RSA_WITH_NULL_MD5 (disabled by default)
  • TLS_RSA_WITH_NULL_SHA256 (disabled by default)
  • TLS_RSA_WITH_NULL_SHA (disabled by default)
  • TLS_RSA_WITH_RC4_128_MD5 (disabled by default)
  • TLS_RSA_WITH_RC4_128_SHA (disabled by default)
  • TLS_RSA_WITH_SEED_CBC_SHA (disabled by default)

Enabled:

  • TLS_AES_128_GCM_SHA256
  • TLS_DHE_DSS_WITH_AES_128_CBC_SHA
  • TLS_DHE_DSS_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_RSA_WITH_AES_128_CBC_SHA256
  • TLS_RSA_WITH_AES_128_GCM_SHA256
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA256
  • TLS_RSA_WITH_AES_256_GCM_SHA384

FIPS SSL Configuration

See FIPS SSL Configuration.

Customizing SSL Configuration

During Installation

During installation the installer will use the default SSL configuration. Under certain circumstances (e.g. in FIPS mode) the default SSL configuration may not work. To customize the SSL configuration during installation use the Two-Step Installation:

  • Prepare a normal deployment configuration.
  • Add pki_skip_configuration=True to the configuration and run pkispawn.
  • Customize the SSL parameters as needed in /var/lib/pki/pki-tomcat/conf/server.xml
  • Replace pki_skip_configuration=True with pki_skip_installation=True and run pkispawn again.

After Installation

After installation the SSL settings can be customized directly in /var/lib/pki/pki-tomcat/conf/server.xml.

Tools

References