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Bugfixes and test for SCEP

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This commit is contained in:
Lauri Võsandi
2017-07-05 21:22:02 +00:00
parent 9b5511212e
commit e25c774fa3
9 changed files with 98 additions and 70 deletions
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4
certidude/api/__init__.py
View File

@@ -90,9 +90,9 @@ class SessionResource(object):
)
if req.context.get("user").is_admin():
logger.info("Logged in authority administrator %s" % req.context.get("user"))
logger.info("Logged in authority administrator %s from %s" % (req.context.get("user"), req.context.get("remote_addr")))
else:
logger.info("Logged in authority user %s" % req.context.get("user"))
logger.info("Logged in authority user %s from %s" % (req.context.get("user"), req.context.get("remote_addr")))
return dict(
user = dict(
name=req.context.get("user").name,

15
certidude/api/ocsp.py
View File

@@ -2,13 +2,12 @@ import click
import hashlib
import os
from asn1crypto.util import timezone
from datetime import datetime, timedelta
from asn1crypto import cms, algos, x509, ocsp
from base64 import b64decode, b64encode
from certbuilder import pem_armor_certificate
from certidude import authority, push, config
from certidude.firewall import whitelist_subnets
from datetime import datetime, timedelta
from oscrypto import keys, asymmetric, symmetric
from oscrypto.errors import SignatureError
@@ -35,7 +34,7 @@ class OCSPResource(object):
if ext["extn_id"].native == "nonce":
response_extensions.append(
ocsp.ResponseDataExtension({
'extn_id': "nonce",
'extn_id': u"nonce",
'critical': False,
'extn_value': ext["extn_value"]
})
@@ -62,7 +61,7 @@ class OCSPResource(object):
name='revoked',
value={
'revocation_time': revoked,
'revocation_reason': "key_compromise",
'revocation_reason': u"key_compromise",
})
except EnvironmentError:
status = ocsp.CertStatus(name="unknown", value=None)
@@ -70,7 +69,7 @@ class OCSPResource(object):
responses.append({
'cert_id': {
'hash_algorithm': {
'algorithm': "sha1"
'algorithm': u"sha1"
},
'issuer_name_hash': server_certificate.asn1.subject.sha1,
'issuer_key_hash': server_certificate.public_key.asn1.sha1,
@@ -89,12 +88,12 @@ class OCSPResource(object):
})
resp.body = ocsp.OCSPResponse({
'response_status': "successful",
'response_status': u"successful",
'response_bytes': {
'response_type': 'basic_ocsp_response',
'response_type': u"basic_ocsp_response",
'response': {
'tbs_response_data': response_data,
'signature_algorithm': {'algorithm': "sha1_rsa"},
'signature_algorithm': {'algorithm': u"sha1_rsa"},
'signature': b64decode(authority.signer_exec("sign-pkcs7", b64encode(response_data.dump()))),
'certs': [server_certificate.asn1]
}

72
certidude/api/scep.py
View File

@@ -15,12 +15,12 @@ from oscrypto.errors import SignatureError
class SetOfPrintableString(SetOf):
_child_spec = PrintableString
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.2'] = "message_type"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.3'] = "pki_status"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.4'] = "fail_info"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.5'] = "sender_nonce"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.6'] = "recipient_nonce"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.7'] = "trans_id"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.2'] = u"message_type"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.3'] = u"pki_status"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.4'] = u"fail_info"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.5'] = u"sender_nonce"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.6'] = u"recipient_nonce"
cms.CMSAttributeType._map['2.16.840.1.113733.1.9.7'] = u"trans_id"
cms.CMSAttribute._oid_specs['message_type'] = SetOfPrintableString
cms.CMSAttribute._oid_specs['pki_status'] = SetOfPrintableString
@@ -54,12 +54,12 @@ class SCEPResource(object):
encrypted_container = b""
attr_list = [
cms.CMSAttribute({
'type': "message_type",
'values': ["3"]
'type': u"message_type",
'values': [u"3"]
}),
cms.CMSAttribute({
'type': "pki_status",
'values': ["2"] # rejected
'type': u"pki_status",
'values': [u"2"] # rejected
})
]
@@ -139,7 +139,7 @@ class SCEPResource(object):
except SCEPError, e:
attr_list.append(cms.CMSAttribute({
'type': "fail_info",
'type': u"fail_info",
'values': ["%d" % e.code]
}))
else:
@@ -149,17 +149,17 @@ class SCEPResource(object):
##################################
degenerate = cms.ContentInfo({
'content_type': 'signed_data',
'content_type': u"signed_data",
'content': cms.SignedData({
'version': 'v1',
'version': u"v1",
'certificates': [signed_certificate.asn1],
'digest_algorithms': [cms.DigestAlgorithm({
'algorithm':'md5'
'algorithm': u"md5"
})],
'encap_content_info': {
'content_type': 'data',
'content_type': u"data",
'content': cms.ContentInfo({
'content_type': 'signed_data',
'content_type': u"signed_data",
'content': None
}).dump()
},
@@ -178,7 +178,7 @@ class SCEPResource(object):
ri = cms.RecipientInfo({
'ktri': cms.KeyTransRecipientInfo({
'version': 'v0',
'version': u"v0",
'rid': cms.RecipientIdentifier({
'issuer_and_serial_number': cms.IssuerAndSerialNumber({
'issuer': current_certificate.chosen["tbs_certificate"]["issuer"],
@@ -186,7 +186,7 @@ class SCEPResource(object):
}),
}),
'key_encryption_algorithm': {
'algorithm': 'rsa'
'algorithm': u"rsa"
},
'encrypted_key': asymmetric.rsa_pkcs1v15_encrypt(
asymmetric.load_certificate(current_certificate.chosen.dump()), key)
@@ -194,14 +194,14 @@ class SCEPResource(object):
})
encrypted_container = cms.ContentInfo({
'content_type': 'enveloped_data',
'content_type': u"enveloped_data",
'content': cms.EnvelopedData({
'version': 'v1',
'version': u"v1",
'recipient_infos': [ri],
'encrypted_content_info': {
'content_type': 'data',
'content_type': u"data",
'content_encryption_algorithm': {
'algorithm': 'des',
'algorithm': u"des",
'parameters': iv
},
'encrypted_content': encrypted_content
@@ -211,16 +211,16 @@ class SCEPResource(object):
attr_list = [
cms.CMSAttribute({
'type': 'message_digest',
'type': u"message_digest",
'values': [hashlib.sha1(encrypted_container).digest()]
}),
cms.CMSAttribute({
'type': "message_type",
'values': ["3"]
'type': u"message_type",
'values': [u"3"]
}),
cms.CMSAttribute({
'type': "pki_status",
'values': ["0"] # ok
'type': u"pki_status",
'values': [u"0"] # ok
})
]
finally:
@@ -231,40 +231,40 @@ class SCEPResource(object):
attrs = cms.CMSAttributes(attr_list + [
cms.CMSAttribute({
'type': "recipient_nonce",
'type': u"recipient_nonce",
'values': [sender_nonce]
}),
cms.CMSAttribute({
'type': 'trans_id',
'type': u"trans_id",
'values': [transaction_id]
})
])
signer = cms.SignerInfo({
"signed_attrs": attrs,
'version':'v1',
'version': u"v1",
'sid': cms.SignerIdentifier({
'issuer_and_serial_number': cms.IssuerAndSerialNumber({
'issuer': server_certificate.asn1["tbs_certificate"]["issuer"],
'serial_number': server_certificate.asn1["tbs_certificate"]["serial_number"],
}),
}),
'digest_algorithm': algos.DigestAlgorithm({'algorithm': 'sha1'}),
'signature_algorithm': algos.SignedDigestAlgorithm({'algorithm': 'rsassa_pkcs1v15'}),
'digest_algorithm': algos.DigestAlgorithm({'algorithm': u"sha1"}),
'signature_algorithm': algos.SignedDigestAlgorithm({'algorithm': u"rsassa_pkcs1v15"}),
'signature': b64decode(authority.signer_exec("sign-pkcs7", b64encode(b"\x31" + attrs.dump()[1:])))
})
resp.append_header("Content-Type", "application/x-pki-message")
resp.body = cms.ContentInfo({
'content_type': 'signed_data',
'content_type': u"signed_data",
'content': cms.SignedData({
'version': 'v1',
'version': u"v1",
'certificates': [x509.Certificate.load(server_certificate.asn1.dump())], # wat
'digest_algorithms': [cms.DigestAlgorithm({
'algorithm':'sha1'
'algorithm': u"sha1"
})],
'encap_content_info': {
'content_type': 'data',
'content_type': u"data",
'content': encrypted_container
},
'signer_infos': [signer]

3
certidude/api/script.py
View File

@@ -18,6 +18,7 @@ class ScriptResource():
else:
script = config.SCRIPT_DEFAULT
tags = []
try:
for tag in attribs.get("user").get("xdg").get("tags").split(","):
if "=" in tag:
k, v = tag.split("=", 1)
@@ -26,6 +27,8 @@ class ScriptResource():
if k == "script":
script = v
tags.append(dict(id=tag, key=k, value=v))
except AttributeError: # No tags
pass
resp.set_header("Content-Type", "text/x-shellscript")
resp.body = env.get_template(script).render(

2
certidude/cli.py
View File

@@ -1276,7 +1276,7 @@ def certidude_cron():
@click.command("serve", help="Run server")
@click.option("-e", "--exit-handler", default=False, is_flag=True, help="Install /api/exit/ handler")
@click.option("-p", "--port", default=8080, help="Listen port")
@click.option("-l", "--listen", default="127.0.0.1", help="Listen address")
@click.option("-l", "--listen", default="127.0.1.1", help="Listen address")
@click.option("-f", "--fork", default=False, is_flag=True, help="Fork to background")
def certidude_serve(port, listen, fork, exit_handler):
import pwd

7
certidude/firewall.py
View File

@@ -50,9 +50,14 @@ def whitelist_subject(func):
except IOError:
raise falcon.HTTPNotFound()
else:
try:
inner_address = getxattr(path, "user.lease.inner_address").decode("ascii")
if req.context.get("remote_addr") != ip_address(inner_address):
except IOError:
raise falcon.HTTPForbidden("Forbidden", "Remote address %s not whitelisted" % req.context.get("remote_addr"))
else:
if req.context.get("remote_addr") != ip_address(inner_address):
raise falcon.HTTPForbidden("Forbidden", "Remote address %s mismatch" % req.context.get("remote_addr"))
else:
return func(self, req, resp, cn, *args, **kwargs)
return wrapped

3
certidude/mailer.py
View File

@@ -42,7 +42,8 @@ def send(template, to=None, include_admins=True, attachments=(), **context):
part.add_header('Content-Disposition', 'attachment', filename=suggested_filename)
part.set_payload(attachment)
msg.attach(part)
click.echo("Sending to: %s" % msg["to"])
if config.MAILER_ADDRESS:
click.echo("Sending to: %s" % msg["to"])
conn = smtplib.SMTP("localhost")
conn.sendmail(config.MAILER_ADDRESS, [u.mail for u in recipients], msg.as_string())

4
certidude/templates/server/nginx.conf
View File

@@ -37,6 +37,10 @@ server {
alias /var/www/html/.well-known/;
}
# Rewrite /cgi-bin/pkiclient.exe to /api/scep for SCEP protocol
location /cgi-bin/pkiclient.exe {
rewrite /cgi-bin/pkiclient.exe /api/scep/ last;
}
{% if not push_server %}
# This only works with nchan, for Debian 9 just apt install libnginx-mod-nchan

34
tests/test_cli.py
View File

@@ -485,13 +485,19 @@ def test_cli_setup_authority():
# Test attribute fetching API call
r = client().simulate_get("/api/signed/test/attr/")
assert r.status_code == 401, r.text
r = client().simulate_get("/api/signed/test/attr/", headers={"Authorization":usertoken})
assert r.status_code == 403, r.text
r = client().simulate_get("/api/signed/nonexistant/attr/")
assert r.status_code == 404, r.text
r = client().simulate_get("/api/signed/test/lease/", headers={"Authorization":admintoken})
r = client().simulate_get("/api/signed/test/attr/", headers={"Authorization":admintoken})
assert r.status_code == 200, r.text
r = client().simulate_get("/api/signed/nonexistant/attr/", headers={"Authorization":admintoken})
assert r.status_code == 404, r.text
# Insert lease
r = client().simulate_get("/api/signed/test/script/")
assert r.status_code == 403, r.text # script not authorized
r = client().simulate_get("/api/signed/test/lease/", headers={"Authorization":admintoken})
assert r.status_code == 404, r.text
r = client().simulate_post("/api/lease/",
query_string = "client=test&inner_address=127.0.0.1&outer_address=8.8.8.8",
headers={"Authorization":admintoken})
@@ -500,21 +506,16 @@ def test_cli_setup_authority():
assert r.status_code == 404, r.text # cert not found
r = client().simulate_get("/api/signed/test/script/")
assert r.status_code == 200, r.text # script render ok
assert "uci set " in r.text, r.text
assert "curl http://ca.example.lan/api/signed/test/attr " in r.text, r.text
r = client().simulate_post("/api/lease/",
query_string = "client=test&inner_address=127.0.0.1&outer_address=8.8.8.8&serial=0",
headers={"Authorization":admintoken})
assert r.status_code == 403, r.text # invalid serial number supplied
r = client().simulate_get("/api/signed/test/attr/")
assert r.status_code == 200, r.text # read okay from own address
r = client().simulate_post("/api/lease/",
query_string = "client=test&inner_address=1.2.3.4&outer_address=8.8.8.8",
headers={"Authorization":admintoken})
assert r.status_code == 200, r.text # lease update ok
r = client().simulate_get("/api/signed/test/attr/")
assert r.status_code == 403, r.text # read failed from other address
# Test lease retrieval
r = client().simulate_get("/api/signed/test/lease/")
@@ -978,6 +979,7 @@ def test_cli_setup_authority():
os.system("sed -e 's/machine enrollment =.*/machine enrollment = allowed/g' -i /etc/certidude/server.conf")
os.system("sed -e 's/scep subnets =.*/scep subnets = 0.0.0.0\\/0/g' -i /etc/certidude/server.conf")
os.system("sed -e 's/ocsp subnets =.*/ocsp subnets = 0.0.0.0\\/0/g' -i /etc/certidude/server.conf")
os.system("sed -e 's/address = certificates@example.lan/address =/g' -i /etc/certidude/server.conf")
from certidude.common import pip
pip("asn1crypto certbuilder")
@@ -1103,6 +1105,20 @@ def test_cli_setup_authority():
os.waitpid(mach_pid, 0)
##################
### SCEP tests ###
##################
os.umask(0022)
assert not os.system("git clone https://github.com/certnanny/sscep /tmp/sscep")
assert not os.system("cd /tmp/sscep && ./Configure && make sscep_dyn")
assert not os.system("/tmp/sscep/sscep_dyn getca -c /tmp/sscep/ca.pem -u http://ca.example.lan/cgi-bin/pkiclient.exe")
assert not os.system("openssl genrsa -out /tmp/key.pem 1024")
assert not os.system("echo '.\n.\n.\n.\n.\ntest8\n\n\n\n' | openssl req -new -sha256 -key /tmp/key.pem -out /tmp/req.pem")
assert not os.system("/tmp/sscep/sscep_dyn enroll -c /tmp/sscep/ca.pem -u http://ca.example.lan/cgi-bin/pkiclient.exe -k /tmp/key.pem -r /tmp/req.pem -l /tmp/cert.pem")
# TODO: test e-mails at this point
###################
### Final tests ###
###################