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https://salsa.debian.org/freeipa-team/freeipa.git
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ec73de969f
AJP implementation in Tomcat is vulnerable to CVE-2020-1938 if used without shared secret. Set up a shared secret between localhost connector and Apache mod_proxy_ajp pass-through. For existing secured AJP pass-through make sure the option used for configuration on the tomcat side is up to date. Tomcat 9.0.31.0 deprecated 'requiredSecret' option name in favor of 'secret'. Details can be found at https://tomcat.apache.org/migration-9.html#Upgrading_9.0.x Fixes: https://pagure.io/freeipa/issue/8221 Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com> Reviewed-By: Christian Heimes <cheimes@redhat.com> Reviewed-By: Florence Blanc-Renaud <flo@redhat.com> Reviewed-By: Rob Crittenden <rcritten@redhat.com>
321 lines
11 KiB
Python
321 lines
11 KiB
Python
# Authors: Ade Lee <alee@redhat.com>
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#
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# Copyright (C) 2014 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from __future__ import absolute_import
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import logging
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import os
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import pwd
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import shutil
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import tempfile
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import base64
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from ipalib import api
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from ipalib import x509
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from ipaplatform.paths import paths
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from ipapython import directivesetter
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from ipapython import ipautil
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from ipapython.dn import DN
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from ipaserver.install import cainstance
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from ipaserver.install import installutils
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from ipaserver.install import ldapupdate
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from ipaserver.install.dogtaginstance import DogtagInstance
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from ipaserver.plugins import ldap2
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logger = logging.getLogger(__name__)
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# When IPA is installed with DNS support, this CNAME should hold all IPA
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# replicas with KRA configured
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IPA_KRA_RECORD = "ipa-kra"
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ADMIN_GROUPS = [
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'Enterprise CA Administrators',
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'Enterprise KRA Administrators',
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'Security Domain Administrators'
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]
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KRA_BASEDN = DN(('o', 'kra'), ('o', 'ipaca'))
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KRA_AGENT_DN = DN(('uid', 'ipakra'), ('ou', 'people'), KRA_BASEDN)
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class KRAInstance(DogtagInstance):
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"""
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We assume that the CA has already been installed, and we use the
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same tomcat instance to host both the CA and KRA.
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The mod_nss database will contain the RA agent cert that will be used
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to do authenticated requests against dogtag. The RA agent cert will
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be the same for both the CA and KRA.
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"""
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# Mapping of nicknames for tracking requests, and the profile to
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# use for that certificate. 'configure_renewal()' reads this
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# dict. The profile MUST be specified.
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tracking_reqs = {
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'auditSigningCert cert-pki-kra': 'caInternalAuthAuditSigningCert',
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'transportCert cert-pki-kra': 'caInternalAuthTransportCert',
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'storageCert cert-pki-kra': 'caInternalAuthDRMstorageCert',
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}
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def __init__(self, realm):
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super(KRAInstance, self).__init__(
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realm=realm,
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subsystem="KRA",
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service_desc="KRA server",
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config=paths.KRA_CS_CFG_PATH,
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)
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def configure_instance(self, realm_name, host_name, dm_password,
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admin_password, pkcs12_info=None, master_host=None,
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subject_base=None, ca_subject=None,
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promote=False, pki_config_override=None):
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"""Create a KRA instance.
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To create a clone, pass in pkcs12_info.
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"""
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self.fqdn = host_name
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self.dm_password = dm_password
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self.admin_groups = ADMIN_GROUPS
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self.admin_password = admin_password
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self.pkcs12_info = pkcs12_info
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if self.pkcs12_info is not None or promote:
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self.clone = True
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self.master_host = master_host
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self.pki_config_override = pki_config_override
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self.subject_base = \
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subject_base or installutils.default_subject_base(realm_name)
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# eagerly convert to DN to ensure validity
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self.ca_subject = DN(ca_subject)
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self.realm = realm_name
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self.suffix = ipautil.realm_to_suffix(realm_name)
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# Confirm that a KRA does not already exist
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if self.is_installed():
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raise RuntimeError(
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"KRA already installed.")
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# Confirm that a Dogtag 10 CA instance already exists
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ca = cainstance.CAInstance(self.realm)
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if not ca.is_installed():
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raise RuntimeError(
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"KRA configuration failed. "
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"A Dogtag CA must be installed first")
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if promote:
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self.step("creating ACIs for admin", self.add_ipaca_aci)
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self.step("creating installation admin user", self.setup_admin)
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self.step("configuring KRA instance", self.__spawn_instance)
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if not self.clone:
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self.step("create KRA agent",
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self.__create_kra_agent)
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if promote:
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self.step("destroying installation admin user",
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self.teardown_admin)
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self.step("enabling ephemeral requests", self.enable_ephemeral)
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self.step("restarting KRA", self.restart_instance)
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self.step("configure certmonger for renewals",
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self.configure_certmonger_renewal_helpers)
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self.step("configure certificate renewals", self.configure_renewal)
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if not self.clone:
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self.step("add vault container", self.__add_vault_container)
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self.step("apply LDAP updates", self.__apply_updates)
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self.step("enabling KRA instance", self.__enable_instance)
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try:
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self.start_creation(runtime=120)
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finally:
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self.clean_pkispawn_files()
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def __spawn_instance(self):
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"""
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Create and configure a new KRA instance using pkispawn.
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Creates a configuration file with IPA-specific
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parameters and passes it to the base class to call pkispawn
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"""
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self.tmp_agent_db = tempfile.mkdtemp(
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prefix="tmp-", dir=paths.VAR_LIB_IPA)
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tmp_agent_pwd = ipautil.ipa_generate_password()
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# Create a temporary file for the admin PKCS #12 file
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(admin_p12_fd, admin_p12_file) = tempfile.mkstemp()
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os.close(admin_p12_fd)
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cfg = dict(
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pki_issuing_ca_uri="https://{}".format(
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ipautil.format_netloc(self.fqdn, 443)),
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# Client security database
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pki_client_database_dir=self.tmp_agent_db,
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pki_client_database_password=tmp_agent_pwd,
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pki_client_database_purge=True,
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pki_client_pkcs12_password=self.admin_password,
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pki_import_admin_cert=False,
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pki_client_admin_cert_p12=admin_p12_file,
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)
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if not (os.path.isdir(paths.PKI_TOMCAT_ALIAS_DIR) and
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os.path.isfile(paths.PKI_TOMCAT_PASSWORD_CONF)):
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# generate pin which we know can be used for FIPS NSS database
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pki_pin = ipautil.ipa_generate_password()
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cfg['pki_server_database_password'] = pki_pin
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else:
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pki_pin = None
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_p12_tmpfile_handle, p12_tmpfile_name = tempfile.mkstemp(dir=paths.TMP)
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if self.clone:
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krafile = self.pkcs12_info[0]
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shutil.copy(krafile, p12_tmpfile_name)
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pent = pwd.getpwnam(self.service_user)
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os.chown(p12_tmpfile_name, pent.pw_uid, pent.pw_gid)
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self._configure_clone(
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cfg,
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security_domain_hostname=self.fqdn,
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clone_pkcs12_path=p12_tmpfile_name,
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)
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cfg.update(
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pki_clone_setup_replication=False,
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)
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else:
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# the admin cert file is needed for the first instance of KRA
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cert = self.get_admin_cert()
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# First make sure that the directory exists
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parentdir = os.path.dirname(paths.ADMIN_CERT_PATH)
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if not os.path.exists(parentdir):
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os.makedirs(parentdir)
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with open(paths.ADMIN_CERT_PATH, "wb") as admin_path:
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admin_path.write(
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base64.b64encode(cert.public_bytes(x509.Encoding.DER))
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)
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# Generate configuration file
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pent = pwd.getpwnam(self.service_user)
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config = self._create_spawn_config(cfg)
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with tempfile.NamedTemporaryFile('w', delete=False) as f:
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config.write(f)
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os.fchown(f.fileno(), pent.pw_uid, pent.pw_gid)
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cfg_file = f.name
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nolog_list = [
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self.dm_password, self.admin_password, pki_pin, tmp_agent_pwd
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]
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try:
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DogtagInstance.spawn_instance(
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self, cfg_file,
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nolog_list=nolog_list
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)
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finally:
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os.remove(p12_tmpfile_name)
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os.remove(cfg_file)
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os.remove(admin_p12_file)
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shutil.move(paths.KRA_BACKUP_KEYS_P12, paths.KRACERT_P12)
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logger.debug("completed creating KRA instance")
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def __create_kra_agent(self):
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"""
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Create KRA agent, assign a certificate, and add the user to
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the appropriate groups for accessing KRA services.
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"""
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# get RA agent certificate
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cert = x509.load_certificate_from_file(paths.RA_AGENT_PEM)
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# connect to KRA database
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conn = ldap2.ldap2(api)
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conn.connect(autobind=True)
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# create ipakra user with RA agent certificate
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entry = conn.make_entry(
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KRA_AGENT_DN,
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objectClass=['top', 'person', 'organizationalPerson',
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'inetOrgPerson', 'cmsuser'],
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uid=["ipakra"],
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sn=["IPA KRA User"],
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cn=["IPA KRA User"],
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usertype=["undefined"],
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userCertificate=[cert],
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description=['2;%s;%s;%s' % (
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cert.serial_number,
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self.ca_subject,
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DN(('CN', 'IPA RA'), self.subject_base))])
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conn.add_entry(entry)
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# add ipakra user to Data Recovery Manager Agents group
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group_dn = DN(
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('cn', 'Data Recovery Manager Agents'), ('ou', 'groups'),
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KRA_BASEDN)
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conn.add_entry_to_group(KRA_AGENT_DN, group_dn, 'uniqueMember')
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conn.disconnect()
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def __add_vault_container(self):
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self._ldap_mod(
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'vault.ldif', {'SUFFIX': self.suffix}, raise_on_err=True)
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def __apply_updates(self):
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sub_dict = {
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'SUFFIX': self.suffix,
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}
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ld = ldapupdate.LDAPUpdate(dm_password=self.dm_password,
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sub_dict=sub_dict)
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ld.update([os.path.join(paths.UPDATES_DIR, '40-vault.update')])
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def enable_ephemeral(self):
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"""
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Enable ephemeral KRA requests to reduce the number of LDAP
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write operations.
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"""
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with installutils.stopped_service('pki-tomcatd', 'pki-tomcat'):
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directivesetter.set_directive(
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self.config,
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'kra.ephemeralRequests',
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'true', quotes=False, separator='=')
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# A restart is required
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def update_cert_config(self, nickname, cert):
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"""
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When renewing a KRA subsystem certificate the configuration file
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needs to get the new certificate as well.
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nickname is one of the known nicknames.
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cert is a DER-encoded certificate.
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"""
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# The cert directive to update per nickname
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directives = {
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'auditSigningCert cert-pki-kra': 'kra.audit_signing.cert',
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'storageCert cert-pki-kra': 'kra.storage.cert',
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'transportCert cert-pki-kra': 'kra.transport.cert',
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'subsystemCert cert-pki-kra': 'kra.subsystem.cert',
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'Server-Cert cert-pki-ca': 'kra.sslserver.cert'}
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if nickname in directives:
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super(KRAInstance, self).update_cert_cs_cfg(
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directives[nickname], cert)
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def __enable_instance(self):
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self.ldap_configure('KRA', self.fqdn, None, self.suffix)
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