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test_headers.py
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test_headers.py
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from http.cookiejar import Cookie
from unittest import TestCase
from httpobs.scanner.analyzer.headers import (content_security_policy,
cookies,
public_key_pinning,
strict_transport_security,
x_content_type_options,
x_frame_options,
x_xss_protection)
from httpobs.tests.utils import empty_requests
class TestContentSecurityPolicy(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = content_security_policy(self.reqs)
self.assertEquals('csp-not-implemented', result['result'])
self.assertFalse(result['pass'])
def test_header_invalid(self):
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = ' '
result = content_security_policy(self.reqs)
self.assertEquals(result['result'], 'csp-header-invalid')
self.assertFalse(result['pass'])
def test_insecure_scheme(self):
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = 'default-src http://mozilla.org'
result = content_security_policy(self.reqs)
self.assertEquals('csp-implemented-with-insecure-scheme', result['result'])
self.assertFalse(result['pass'])
def test_unsafe_inline(self):
values = ("script-src 'unsafe-inline'",
"script-src data:",
"default-src 'unsafe-inline'",
"upgrade-insecure-requests")
for value in values:
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = value
result = content_security_policy(self.reqs)
self.assertEquals('csp-implemented-with-unsafe-inline', result['result'])
self.assertFalse(result['pass'])
def test_unsafe_eval(self):
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = "script-src 'unsafe-eval'"
result = content_security_policy(self.reqs)
self.assertEquals('csp-implemented-with-unsafe-eval', result['result'])
self.assertEquals(result['data']['script-src'], ["'unsafe-eval'"])
self.assertFalse(result['pass'])
def test_unsafe_inline_in_style_src_only(self):
values = ("script-src 'none'; style-src 'unsafe-inline'",
"default-src 'none'; script-src https://mozilla.org; style-src 'unsafe-inline'",
"default-src 'unsafe-inline'; script-src https://mozilla.org;",
"default-src 'none'; style-src data:")
for value in values:
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = value
result = content_security_policy(self.reqs)
self.assertEquals('csp-implemented-with-unsafe-inline-in-style-src-only', result['result'])
self.assertFalse(result['pass'])
def test_no_unsafe(self):
values = ("default-src https://mozilla.org",
"script-src https://mozilla.org; style-src https://mozilla.org; upgrade-insecure-requests;")
for value in values:
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = value
result = content_security_policy(self.reqs)
self.assertEquals('csp-implemented-with-no-unsafe', result['result'])
self.assertTrue(result['pass'])
def test_no_unsafe_default_src_none(self):
values = ("default-src 'none'; script-src https://mozilla.org;"
"style-src https://mozilla.org; upgrade-insecure-requests;",)
for value in values:
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = value
result = content_security_policy(self.reqs)
self.assertEquals('csp-implemented-with-no-unsafe-default-src-none', result['result'])
self.assertTrue(result['pass'])
class TestCookies(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = cookies(self.reqs)
self.assertEquals('cookies-not-found', result['result'])
self.assertTrue(result['pass'])
def test_secure_with_httponly_sessions(self):
# Python cookies are the literal worst, seriously, the worst
cookie = Cookie(name='SESSIONID',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={'HttpOnly': None},
secure=True,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
cookie = Cookie(name='foo',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={},
secure=True,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
result = cookies(self.reqs)
self.assertEquals('cookies-secure-with-httponly-sessions', result['result'])
self.assertTrue(result['pass'])
def test_regular_cookie_no_secure_but_hsts(self):
cookie = Cookie(name='foo',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={'HttpOnly': None},
secure=False,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
self.reqs['responses']['https'].headers['Strict-Transport-Security'] = 'max-age=15768000'
result = cookies(self.reqs)
self.assertEquals('cookies-without-secure-flag-but-protected-by-hsts', result['result'])
self.assertFalse(result['pass'])
def test_session_cookie_no_secure_but_hsts(self):
cookie = Cookie(name='SESSIONID',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={'HttpOnly': None},
secure=False,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
self.reqs['responses']['https'].headers['Strict-Transport-Security'] = 'max-age=15768000'
result = cookies(self.reqs)
self.assertEquals('cookies-session-without-secure-flag-but-protected-by-hsts', result['result'])
self.assertFalse(result['pass'])
def test_no_secure(self):
cookie = Cookie(name='foo',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={'HttpOnly': None},
secure=False,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
result = cookies(self.reqs)
self.assertEquals('cookies-without-secure-flag', result['result'])
self.assertFalse(result['pass'])
def test_session_no_httponly(self):
cookie = Cookie(name='SESSIONID',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={},
secure=True,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
result = cookies(self.reqs)
self.assertEquals('cookies-session-without-httponly-flag', result['result'])
self.assertFalse(result['pass'])
def test_session_no_secure(self):
cookie = Cookie(name='SESSIONID',
comment=None,
comment_url=None,
discard=False,
domain='mozilla.com',
domain_initial_dot=False,
domain_specified='mozilla.com',
expires=None,
path='/',
path_specified='/',
port=443,
port_specified=443,
rfc2109=False,
rest={'HttpOnly': None},
secure=False,
version=1,
value='bar')
self.reqs['session'].cookies.set_cookie(cookie)
result = cookies(self.reqs)
self.assertEquals('cookies-session-without-secure-flag', result['result'])
self.assertFalse(result['pass'])
class TestPublicKeyPinning(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-not-implemented', result['result'])
self.assertTrue(result['pass'])
def test_header_invalid(self):
# No pins
self.reqs['responses']['https'].headers['Public-Key-Pins'] = 'max-age=15768000; includeSubDomains; preload'
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-header-invalid', result['result'])
self.assertEquals(0, result['numPins'])
self.assertFalse(result['pass'])
# No max-age
self.reqs['responses']['https'].headers['Public-Key-Pins'] = (
'pin-sha256="E9CZ9INDbd+2eRQozYqqbQ2yXLVKB9+xcprMF+44U1g="; '
'pin-sha256="LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="; '
'report-uri="http://example.com/pkp-report"')
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-header-invalid', result['result'])
self.assertEquals(None, result['max-age'])
self.assertEquals(2, result['numPins'])
self.assertFalse(result['pass'])
# Not enough pins
self.reqs['responses']['https'].headers['Public-Key-Pins'] = (
'max-age=15768000; '
'pin-sha256="LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="; '
'report-uri="http://example.com/pkp-report"')
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-header-invalid', result['result'])
self.assertEquals(15768000, result['max-age'])
self.assertEquals(1, result['numPins'])
self.assertFalse(result['pass'])
def test_no_https(self):
self.reqs['responses']['auto'].headers['Public-Key-Pins'] = 'max-age=15768000'
self.reqs['responses']['http'].headers['Public-Key-Pins'] = 'max-age=15768000'
self.reqs['responses']['https'] = None
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-not-implemented-no-https', result['result'])
self.assertTrue(result['pass'])
def test_max_age_too_low(self):
self.reqs['responses']['https'].headers['Public-Key-Pins'] = (
'max-age=86400; '
'pin-sha256="E9CZ9INDbd+2eRQozYqqbQ2yXLVKB9+xcprMF+44U1g="; '
'pin-sha256="LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="; '
'report-uri="http://example.com/pkp-report"')
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-implemented-max-age-less-than-fifteen-days', result['result'])
self.assertTrue(result['pass'])
def test_implemented(self):
self.reqs['responses']['https'].headers['Public-Key-Pins'] = (
'max-age=15768000; '
'includeSubDomains; '
'pin-sha256="E9CZ9INDbd+2eRQozYqqbQ2yXLVKB9+xcprMF+44U1g="; '
'pin-sha256="LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="; '
'report-uri="http://example.com/pkp-report"')
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-implemented-max-age-at-least-fifteen-days', result['result'])
self.assertEquals(15768000, result['max-age'])
self.assertEquals(15768000, result['max-age'])
self.assertTrue(result['includeSubDomains'])
self.assertTrue(result['pass'])
def test_preloaded(self):
# apis.google.com has regular includeSubDomains
self.reqs['responses']['https'].url = 'https://apis.google.com/'
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-preloaded', result['result'])
self.assertTrue(result['includeSubDomains'])
self.assertTrue(result['pass'])
self.assertTrue(result['preloaded'])
self.reqs['responses']['https'].url = 'https://foo.apis.google.com'
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-preloaded', result['result'])
self.assertTrue(result['includeSubDomains'])
self.assertTrue(result['pass'])
self.assertTrue(result['preloaded'])
# Dropbox Static uses include_subdomains_for_pinning
self.reqs['responses']['https'].url = 'https://foo.dropboxstatic.com/'
result = public_key_pinning(self.reqs)
self.assertEquals('hpkp-preloaded', result['result'])
self.assertTrue(result['includeSubDomains'])
self.assertTrue(result['pass'])
self.assertTrue(result['preloaded'])
class TestStrictTransportSecurity(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-not-implemented', result['result'])
self.assertFalse(result['pass'])
def test_header_invalid(self):
self.reqs['responses']['https'].headers['Strict-Transport-Security'] = 'includeSubDomains; preload'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-header-invalid', result['result'])
self.assertFalse(result['pass'])
# If the header is set twice
self.reqs['responses']['https'].headers['Strict-Transport-Security'] = \
'max-age=15768000; includeSubDomains, max-age=15768000; includeSubDomains'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-header-invalid', result['result'])
self.assertFalse(result['pass'])
def test_no_https(self):
self.reqs['responses']['auto'].headers['Strict-Transport-Security'] = 'max-age=15768000'
self.reqs['responses']['http'].headers['Strict-Transport-Security'] = 'max-age=15768000'
self.reqs['responses']['https'] = None
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-not-implemented-no-https', result['result'])
self.assertFalse(result['pass'])
def test_max_age_too_low(self):
self.reqs['responses']['https'].headers['Strict-Transport-Security'] = 'max-age=86400'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-implemented-max-age-less-than-six-months', result['result'])
self.assertFalse(result['pass'])
def test_implemented(self):
self.reqs['responses']['https'].headers['Strict-Transport-Security'] = \
'max-age=15768000; includeSubDomains; preload'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-implemented-max-age-at-least-six-months', result['result'])
self.assertEquals(result['max-age'], 15768000)
self.assertTrue(result['includeSubDomains'])
self.assertTrue(result['preload'])
self.assertTrue(result['pass'])
def test_preloaded(self):
self.reqs['responses']['https'].url = 'https://bugzilla.mozilla.org/'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-preloaded', result['result'])
self.assertTrue(result['includeSubDomains'])
self.assertTrue(result['pass'])
self.assertTrue(result['preloaded'])
# Cloudflare doesn't include subdomains
self.reqs['responses']['https'].url = 'https://cloudflare.com/'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-preloaded', result['result'])
self.assertFalse(result['includeSubDomains'])
self.assertTrue(result['pass'])
self.assertTrue(result['preloaded'])
# Android.com is preloaded, but only for HPKP, not HSTS
self.reqs['responses']['https'].url = 'https://android.com/'
result = strict_transport_security(self.reqs)
self.assertEquals('hsts-not-implemented', result['result'])
self.assertFalse(result['includeSubDomains'])
self.assertFalse(result['pass'])
self.assertFalse(result['preloaded'])
class TestXContentTypeOptions(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = x_content_type_options(self.reqs)
self.assertEquals('x-content-type-options-not-implemented', result['result'])
self.assertFalse(result['pass'])
def test_header_invalid(self):
self.reqs['responses']['auto'].headers['X-Content-Type-Options'] = 'whimsy'
result = x_content_type_options(self.reqs)
self.assertEquals('x-content-type-options-header-invalid', result['result'])
self.assertFalse(result['pass'])
def test_nosniff(self):
self.reqs['responses']['auto'].headers['X-Content-Type-Options'] = 'nosniff'
result = x_content_type_options(self.reqs)
self.assertEquals('x-content-type-options-nosniff', result['result'])
self.assertTrue(result['pass'])
class TestXFrameOptions(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = x_frame_options(self.reqs)
self.assertEquals('x-frame-options-not-implemented', result['result'])
self.assertFalse(result['pass'])
def test_header_invalid(self):
self.reqs['responses']['auto'].headers['X-Frame-Options'] = 'whimsy'
result = x_frame_options(self.reqs)
self.assertEquals('x-frame-options-header-invalid', result['result'])
self.assertFalse(result['pass'])
# common to see this header sent multiple times
self.reqs['responses']['auto'].headers['X-Frame-Options'] = 'SAMEORIGIN, SAMEORIGIN'
result = x_frame_options(self.reqs)
self.assertEquals('x-frame-options-header-invalid', result['result'])
self.assertFalse(result['pass'])
def test_allow_from_origin(self):
self.reqs['responses']['auto'].headers['X-Frame-Options'] = 'ALLOW-FROM https://mozilla.org'
result = x_frame_options(self.reqs)
self.assertEquals('x-frame-options-allow-from-origin', result['result'])
self.assertTrue(result['pass'])
def test_deny(self):
self.reqs['responses']['auto'].headers['X-Frame-Options'] = 'DENY'
result = x_frame_options(self.reqs)
self.assertEquals('x-frame-options-sameorigin-or-deny', result['result'])
self.assertTrue(result['pass'])
def test_enabled_via_csp(self):
self.reqs['responses']['auto'].headers['X-Frame-Options'] = 'DENY'
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = 'frame-ancestors https://mozilla.org'
result = x_frame_options(self.reqs)
self.assertEquals('x-frame-options-implemented-via-csp', result['result'])
self.assertTrue(result['pass'])
class TestXXSSProtection(TestCase):
def setUp(self):
self.reqs = empty_requests()
def tearDown(self):
self.reqs = None
def test_missing(self):
result = x_xss_protection(self.reqs)
self.assertEquals('x-xss-protection-not-implemented', result['result'])
self.assertFalse(result['pass'])
def test_header_invalid(self):
self.reqs['responses']['auto'].headers['X-XSS-Protection'] = 'whimsy'
result = x_xss_protection(self.reqs)
self.assertEquals('x-xss-protection-header-invalid', result['result'])
self.assertFalse(result['pass'])
def test_disabled(self):
self.reqs['responses']['auto'].headers['X-XSS-Protection'] = '0'
result = x_xss_protection(self.reqs)
self.assertEquals('x-xss-protection-disabled', result['result'])
self.assertFalse(result['pass'])
def test_enabled_noblock(self):
self.reqs['responses']['auto'].headers['X-XSS-Protection'] = '1'
result = x_xss_protection(self.reqs)
self.assertEquals('x-xss-protection-enabled', result['result'])
self.assertTrue(result['pass'])
def test_enabled_block(self):
self.reqs['responses']['auto'].headers['X-XSS-Protection'] = '1; mode=block'
result = x_xss_protection(self.reqs)
self.assertEquals('x-xss-protection-enabled-mode-block', result['result'])
self.assertTrue(result['pass'])
def test_enabled_via_csp(self):
self.reqs['responses']['auto'].headers['Content-Security-Policy'] = 'script-src \'none\''
result = x_xss_protection(self.reqs)
self.assertEquals('x-xss-protection-not-needed-due-to-csp', result['result'])
self.assertTrue(result['pass'])