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Make host/service cert revocation aware of lightweight CAs

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Revocation of host/service certs on host/service deletion or other
operations is broken when cert is issued by a lightweight (sub)CA,
causing the delete operation to be aborted.  Look up the issuing CA
and pass it to 'cert_revoke' to fix the issue.

Fixes: https://fedorahosted.org/freeipa/ticket/6221
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
This commit is contained in:
Fraser Tweedale 2016-08-26 15:31:13 +10:00 committed by Jan Cholasta
parent 520ad7d865
commit daeaf2a823
2 changed files with 37 additions and 39 deletions
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20
ipaserver/plugins/host.py
View File

@ -843,12 +843,8 @@ class host_del(LDAPDelete):
)
if self.api.Command.ca_is_enabled()['result']:
try:
entry_attrs = ldap.get_entry(dn, ['usercertificate'])
except errors.NotFound:
self.obj.handle_not_found(*keys)
revoke_certs(entry_attrs.get('usercertificate', []), self.log)
certs = self.api.Command.cert_find(host=keys)['result']
revoke_certs(certs)
return dn
@ -910,7 +906,9 @@ class host_mod(LDAPUpdate):
old_certs = entry_attrs_old.get('usercertificate', [])
old_certs_der = [x509.normalize_certificate(c) for c in old_certs]
removed_certs_der = set(old_certs_der) - set(certs_der)
revoke_certs(removed_certs_der, self.log)
for der in removed_certs_der:
rm_certs = api.Command.cert_find(certificate=der)['result']
revoke_certs(rm_certs)
if certs:
entry_attrs['usercertificate'] = certs_der
@ -1196,10 +1194,10 @@ class host_disable(LDAPQuery):
except errors.NotFound:
self.obj.handle_not_found(*keys)
if self.api.Command.ca_is_enabled()['result']:
certs = entry_attrs.get('usercertificate', [])
certs = self.api.Command.cert_find(host=keys)['result']
if certs:
revoke_certs(certs, self.log)
revoke_certs(certs)
# Remove the usercertificate altogether
entry_attrs['usercertificate'] = None
ldap.update_entry(entry_attrs)
@ -1341,8 +1339,8 @@ class host_remove_cert(LDAPRemoveAttributeViaOption):
def post_callback(self, ldap, dn, entry_attrs, *keys, **options):
assert isinstance(dn, DN)
if 'usercertificate' in options:
revoke_certs(options['usercertificate'], self.log)
for cert in options.get('usercertificate', []):
revoke_certs(api.Command.cert_find(certificate=cert)['result'])
return dn

56
ipaserver/plugins/service.py
View File

@ -220,37 +220,38 @@ def validate_certificate(ugettext, cert):
x509.validate_certificate(cert, datatype=x509.DER)
def revoke_certs(certs, logger=None):
def revoke_certs(certs):
"""
revoke the certificates removed from host/service entry
:param certs: Output of a 'cert_find' command.
"""
for cert in certs:
try:
cert = x509.normalize_certificate(cert)
except errors.CertificateFormatError as e:
if logger is not None:
logger.info("Problem decoding certificate: %s" % e)
serial = unicode(x509.get_serial_number(cert, x509.DER))
try:
result = api.Command['cert_show'](unicode(serial))['result']
except errors.CertificateOperationError:
if 'cacn' not in cert:
# Cert is known to IPA, but has no associated CA.
# If it was issued by 3rd-party CA, we can't revoke it.
# If it was issued by a Dogtag lightweight CA that was
# subsequently deleted, we can't revoke it via IPA.
# We could go directly to Dogtag to revoke it, but the
# issuer's cert should have been revoked so never mind.
continue
if 'revocation_reason' in result:
continue
if x509.normalize_certificate(result['certificate']) != cert:
if cert['revoked']:
# cert is already revoked
continue
try:
api.Command['cert_revoke'](unicode(serial),
revocation_reason=4)
api.Command['cert_revoke'](
cert['serial_number'],
cacn=cert['cacn'],
revocation_reason=4,
)
except errors.NotImplementedError:
# some CA's might not implement revoke
pass
def set_certificate_attrs(entry_attrs):
"""
Set individual attributes from some values from a certificate.
@ -674,11 +675,8 @@ class service_del(LDAPDelete):
# custom services allow them to manage them.
check_required_principal(ldap, keys[-1])
if self.api.Command.ca_is_enabled()['result']:
try:
entry_attrs = ldap.get_entry(dn, ['usercertificate'])
except errors.NotFound:
self.obj.handle_not_found(*keys)
revoke_certs(entry_attrs.get('usercertificate', []), self.log)
certs = self.api.Command.cert_find(service=keys)['result']
revoke_certs(certs)
return dn
@ -711,7 +709,9 @@ class service_mod(LDAPUpdate):
old_certs = entry_attrs_old.get('usercertificate', [])
old_certs_der = [x509.normalize_certificate(c) for c in old_certs]
removed_certs_der = set(old_certs_der) - set(certs_der)
revoke_certs(removed_certs_der, self.log)
for der in removed_certs_der:
rm_certs = api.Command.cert_find(certificate=der)['result']
revoke_certs(rm_certs)
if certs:
entry_attrs['usercertificate'] = certs_der
@ -950,10 +950,10 @@ class service_disable(LDAPQuery):
done_work = False
if self.api.Command.ca_is_enabled()['result']:
certs = entry_attrs.get('usercertificate', [])
certs = self.api.Command.cert_find(service=keys)['result']
if len(certs) > 0:
revoke_certs(certs, self.log)
revoke_certs(certs)
# Remove the usercertificate altogether
entry_attrs['usercertificate'] = None
ldap.update_entry(entry_attrs)
@ -989,8 +989,8 @@ class service_remove_cert(LDAPRemoveAttributeViaOption):
def post_callback(self, ldap, dn, entry_attrs, *keys, **options):
assert isinstance(dn, DN)
if 'usercertificate' in options:
revoke_certs(options['usercertificate'], self.log)
for cert in options.get('usercertificate', []):
revoke_certs(api.Command.cert_find(certificate=cert)['result'])
return dn