mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2026-07-06 16:36:53 +00:00
Adding support for --xxe
This commit is contained in:
Miroslav Štampar
parent
16c8909a0c
commit
5fa2da5eae
14 changed files with 1413 additions and 16 deletions
|
|
@ -23,7 +23,7 @@ sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
|
|||
sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), ".."))
|
||||
|
||||
from lib.core.settings import MAX_DNS_REQUESTS
|
||||
from lib.request.dns import DNSQuery, DNSServer
|
||||
from lib.request.dns import DNSQuery, DNSServer, InteractshDNSServer
|
||||
|
||||
|
||||
def build_query(name, tid=b"\x12\x34", qtype=1):
|
||||
|
|
@ -324,3 +324,41 @@ class TestDNSServerConcurrency(unittest.TestCase):
|
|||
|
||||
if __name__ == "__main__":
|
||||
unittest.main(verbosity=2)
|
||||
|
||||
|
||||
class TestInteractshDNSServer(unittest.TestCase):
|
||||
"""The interactsh-backed DNS collector must present the same pop(prefix, suffix)
|
||||
accounting as DNSServer, matching only prefix.<result>.suffix names and never
|
||||
returning the same captured lookup twice."""
|
||||
|
||||
def _collector(self, names):
|
||||
class _FakeClient(object):
|
||||
registered = True
|
||||
def dnsDomain(self): return "corr0000000000000nnc.oast.fun"
|
||||
def dnsNames(self): return list(names)
|
||||
srv = InteractshDNSServer.__new__(InteractshDNSServer)
|
||||
srv._client = _FakeClient()
|
||||
srv.domain = srv._client.dnsDomain()
|
||||
srv._seen = set()
|
||||
srv._running = True
|
||||
srv._initialized = True
|
||||
return srv
|
||||
|
||||
def test_pop_matches_prefix_suffix_and_dedups(self):
|
||||
names = ["aaa.5345435245540a.zzz.corr0000000000000nnc", "unrelated.corr0000000000000nnc"]
|
||||
srv = self._collector(names)
|
||||
got = srv.pop("aaa", "zzz")
|
||||
self.assertEqual(got, "aaa.5345435245540a.zzz.corr0000000000000nnc")
|
||||
self.assertIsNone(srv.pop("aaa", "zzz")) # already consumed
|
||||
|
||||
def test_pop_no_match(self):
|
||||
srv = self._collector(["aaa.deadbeef.qqq.corr0000000000000nnc"])
|
||||
self.assertIsNone(srv.pop("aaa", "zzz"))
|
||||
|
||||
def test_pop_any(self):
|
||||
srv = self._collector(["whatever.corr0000000000000nnc"])
|
||||
self.assertEqual(srv.pop(), "whatever.corr0000000000000nnc")
|
||||
|
||||
def test_run_is_noop(self):
|
||||
self._collector([]).run() # must not raise
|
||||
|
||||
|
|
|
|||
236
tests/test_xxe.py
Normal file
236
tests/test_xxe.py
Normal file
|
|
@ -0,0 +1,236 @@
|
|||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Copyright (c) 2006-2026 sqlmap developers (https://sqlmap.org)
|
||||
See the file 'LICENSE' for copying permission
|
||||
|
||||
Offline, deterministic tests for the XXE injection engine. Pure helpers are exercised
|
||||
directly; detection tiers run against a mocked _send() so reflected/error/echo oracles
|
||||
can be simulated without a live target; and crafted payloads are parsed with real lxml
|
||||
to prove they are well-formed and actually expand the injected entity.
|
||||
"""
|
||||
|
||||
import os
|
||||
import re
|
||||
import sys
|
||||
import unittest
|
||||
|
||||
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
|
||||
from _testutils import bootstrap
|
||||
bootstrap()
|
||||
|
||||
import lib.techniques.xxe.inject as xxe
|
||||
from lib.core.data import conf
|
||||
from lib.core.data import kb
|
||||
|
||||
|
||||
class TestLooksXmlAndClean(unittest.TestCase):
|
||||
def test_looks_xml(self):
|
||||
self.assertTrue(xxe._looksXml("<user><name>x</name></user>"))
|
||||
self.assertTrue(xxe._looksXml(" <?xml version='1.0'?><r/>"))
|
||||
self.assertFalse(xxe._looksXml("id=1&name=x"))
|
||||
self.assertFalse(xxe._looksXml("{\"a\": 1}"))
|
||||
self.assertFalse(xxe._looksXml(""))
|
||||
|
||||
def test_clean_body_strips_marks_and_bom(self):
|
||||
conf.data = u"\ufeff<user><name>luther%s</name></user>" % (kb.customInjectionMark or "*")
|
||||
cleaned = xxe._cleanBody()
|
||||
self.assertFalse(cleaned.startswith(u"\ufeff"))
|
||||
self.assertNotIn(kb.customInjectionMark or "*", cleaned)
|
||||
self.assertTrue(cleaned.startswith("<user>"))
|
||||
|
||||
|
||||
class TestRootName(unittest.TestCase):
|
||||
def test_plain(self):
|
||||
self.assertEqual(xxe._rootName("<user><name>x</name></user>"), "user")
|
||||
|
||||
def test_with_prolog_and_comment(self):
|
||||
self.assertEqual(xxe._rootName("<?xml version='1.0'?><!-- hi --><order id='1'>x</order>"), "order")
|
||||
|
||||
def test_namespaced(self):
|
||||
self.assertEqual(xxe._rootName('<soap:Envelope xmlns:soap="x"><b/></soap:Envelope>'), "soap:Envelope")
|
||||
|
||||
def test_existing_doctype_skipped(self):
|
||||
self.assertEqual(xxe._rootName('<!DOCTYPE user SYSTEM "u.dtd"><user/>'), "user")
|
||||
|
||||
|
||||
class TestBuildDoctype(unittest.TestCase):
|
||||
SUBSET = '<!ENTITY x "y">'
|
||||
|
||||
def test_no_doctype_prepended(self):
|
||||
out = xxe._buildDoctype("<r>x</r>", "r", self.SUBSET)
|
||||
self.assertIn("<!DOCTYPE r [", out)
|
||||
self.assertIn(self.SUBSET, out)
|
||||
|
||||
def test_after_prolog(self):
|
||||
out = xxe._buildDoctype("<?xml version='1.0'?><r>x</r>", "r", self.SUBSET)
|
||||
self.assertLess(out.index("<?xml"), out.index("<!DOCTYPE"))
|
||||
|
||||
def test_existing_internal_subset_spliced(self):
|
||||
out = xxe._buildDoctype("<!DOCTYPE r [<!ELEMENT r ANY>]><r>x</r>", "r", self.SUBSET)
|
||||
self.assertEqual(out.count("<!DOCTYPE"), 1) # no second DOCTYPE
|
||||
self.assertIn(self.SUBSET, out)
|
||||
|
||||
def test_subsetless_doctype_extended(self):
|
||||
out = xxe._buildDoctype('<!DOCTYPE r SYSTEM "r.dtd"><r>x</r>', "r", self.SUBSET)
|
||||
self.assertEqual(out.count("<!DOCTYPE"), 1) # extended, not duplicated
|
||||
self.assertIn(self.SUBSET, out)
|
||||
self.assertIn("[", out)
|
||||
|
||||
|
||||
class TestPlaceRef(unittest.TestCase):
|
||||
def test_all_text_nodes(self):
|
||||
out = xxe._placeRef("<p><a>one</a><b>two</b></p>", "&e;")
|
||||
self.assertEqual(out.count("&e;"), 2)
|
||||
self.assertNotIn("one", out)
|
||||
self.assertNotIn("two", out)
|
||||
|
||||
def test_attributes_only_when_requested(self):
|
||||
text = '<u id="1"><n>luther</n></u>'
|
||||
self.assertNotIn('id="&e;"', xxe._placeRef(text, "&e;")) # attrs off by default
|
||||
self.assertIn('id="&e;"', xxe._placeRef(text, "&e;", attrs=True)) # attrs on
|
||||
|
||||
def test_xmlns_preserved(self):
|
||||
out = xxe._placeRef('<soap:E xmlns:soap="ns"><b>x</b></soap:E>', "&e;", attrs=True)
|
||||
self.assertIn('xmlns:soap="ns"', out) # namespace decl untouched
|
||||
|
||||
def test_self_closing_fallback(self):
|
||||
out = xxe._placeRef("<r/>", "&e;")
|
||||
self.assertIn("&e;", out)
|
||||
self.assertIn("</r>", out)
|
||||
|
||||
def test_empty_element_fallback(self):
|
||||
out = xxe._placeRef("<r></r>", "&e;")
|
||||
self.assertIn("<r>&e;</r>", out)
|
||||
|
||||
|
||||
class TestGuards(unittest.TestCase):
|
||||
def test_echoed(self):
|
||||
self.assertTrue(xxe._echoed("... <!DOCTYPE r [ ... "))
|
||||
self.assertTrue(xxe._echoed("mirror <!ENTITY x ..."))
|
||||
self.assertFalse(xxe._echoed("Hello, expanded value!"))
|
||||
|
||||
def test_fingerprint(self):
|
||||
self.assertIsNotNone(xxe._fingerprint('failed to load external entity "file:///x"'))
|
||||
self.assertIsNotNone(xxe._fingerprint('failed to load "file:///x": No such file')) # PHP form
|
||||
self.assertIsNotNone(xxe._fingerprint("org.xml.sax.SAXParseException: DOCTYPE"))
|
||||
self.assertIsNone(xxe._fingerprint("perfectly normal response"))
|
||||
|
||||
def test_confirm_read_baseline_guard(self):
|
||||
pattern = r"(?i)^(?:NAME|ID|VERSION)="
|
||||
page = "content:\nNAME=\"Ubuntu\"\nID=ubuntu"
|
||||
self.assertIsNotNone(xxe._confirmRead(page, pattern, baseline="unrelated"))
|
||||
# a line already present in the baseline must not count as a read
|
||||
self.assertIsNone(xxe._confirmRead("NAME=\"Ubuntu\"", pattern, baseline="NAME=\"Ubuntu\""))
|
||||
|
||||
|
||||
class TestOobToggle(unittest.TestCase):
|
||||
def test_oob_enabled_default(self):
|
||||
conf.oobServer = None
|
||||
self.assertTrue(xxe._oobEnabled())
|
||||
|
||||
def test_oob_disabled_sentinels(self):
|
||||
for sentinel in ("none", "off", "0", "No", "DISABLE", "false"):
|
||||
conf.oobServer = sentinel
|
||||
self.assertFalse(xxe._oobEnabled(), "'%s' should disable OOB" % sentinel)
|
||||
conf.oobServer = None
|
||||
|
||||
def test_oob_custom_server_enabled(self):
|
||||
conf.oobServer = "myinteractsh.example.com"
|
||||
self.assertTrue(xxe._oobEnabled())
|
||||
conf.oobServer = None
|
||||
|
||||
|
||||
class TestDetectionMocked(unittest.TestCase):
|
||||
def setUp(self):
|
||||
self._send = xxe._send
|
||||
xxe.SENTINEL = "sentineltoken1"
|
||||
|
||||
def tearDown(self):
|
||||
xxe._send = self._send
|
||||
|
||||
def test_internal_reflected_positive(self):
|
||||
xxe._send = lambda body: "Hello, %s! (parsed)" % xxe.SENTINEL
|
||||
payload, _ = xxe._tryInternal("<u><n>luther</n></u>", "u", baseline="Hello, luther!")
|
||||
self.assertIsNotNone(payload)
|
||||
|
||||
def test_internal_echo_rejected(self):
|
||||
# endpoint mirrors the raw body back (never parses) -> must NOT be a hit
|
||||
xxe._send = lambda body: "You sent: %s" % body
|
||||
payload, _ = xxe._tryInternal("<u><n>luther</n></u>", "u", baseline="You sent: <u><n>luther</n></u>")
|
||||
self.assertIsNone(payload)
|
||||
|
||||
def test_internal_baseline_contains_sentinel_rejected(self):
|
||||
xxe._send = lambda body: "Hello, %s!" % xxe.SENTINEL
|
||||
payload, _ = xxe._tryInternal("<u><n>luther</n></u>", "u", baseline="already %s here" % xxe.SENTINEL)
|
||||
self.assertIsNone(payload)
|
||||
|
||||
def test_error_based_positive(self):
|
||||
xxe._send = lambda body: 'XML error: failed to load external entity "file:///%s/nonexistent"' % xxe.SENTINEL
|
||||
payload, page = xxe._tryError("<u><n>x</n></u>", "u")
|
||||
self.assertIsNotNone(payload)
|
||||
self.assertIsNotNone(xxe._fingerprint(page))
|
||||
|
||||
def test_error_based_echo_rejected(self):
|
||||
xxe._send = lambda body: "You sent: %s" % body # echoes DOCTYPE/ENTITY -> _echoed guard
|
||||
payload, _ = xxe._tryError("<u><n>x</n></u>", "u")
|
||||
self.assertIsNone(payload)
|
||||
|
||||
def test_error_exfil_extraction_base64(self):
|
||||
import base64
|
||||
from lib.core.convert import getText
|
||||
secret = getText(base64.b64encode(b"root:x:0:0:root:/root:/bin/sh"))
|
||||
|
||||
def mock(body):
|
||||
m = re.search(r'file:///(\w+)/%file;', body) or re.search(r'file:///(\w+)/%file;', body)
|
||||
marker = m.group(1) if m else "zzz"
|
||||
return 'failed to load "file:///%s/%s"' % (marker, secret)
|
||||
|
||||
xxe._send = mock
|
||||
conf.fileRead = "/etc/passwd"
|
||||
try:
|
||||
content, name = xxe._tryErrorExfil("<u><n>x</n></u>", "u")
|
||||
finally:
|
||||
conf.fileRead = None
|
||||
self.assertEqual(name, "/etc/passwd")
|
||||
self.assertIn("root:x:0:0", content or "")
|
||||
|
||||
|
||||
class TestRealXmlPayloads(unittest.TestCase):
|
||||
"""Prove crafted payloads are well-formed and actually expand the entity."""
|
||||
|
||||
@staticmethod
|
||||
def _expand(payload):
|
||||
try:
|
||||
from lxml import etree
|
||||
except ImportError:
|
||||
raise unittest.SkipTest("lxml not available")
|
||||
parser = etree.XMLParser(resolve_entities=True, load_dtd=True, no_network=True, huge_tree=False)
|
||||
doc = etree.fromstring(payload.encode("utf-8"), parser)
|
||||
return "".join(doc.itertext())
|
||||
|
||||
def test_internal_entity_expands(self):
|
||||
xxe.SENTINEL = "realxmlsentinel"
|
||||
ent = "abcd"
|
||||
subset = '<!ENTITY %s "%s">' % (ent, xxe.SENTINEL)
|
||||
payload = xxe._placeRef(xxe._buildDoctype("<u><n>luther</n></u>", "u", subset), "&%s;" % ent)
|
||||
self.assertIn(xxe.SENTINEL, self._expand(payload))
|
||||
|
||||
def test_internal_entity_expands_with_existing_doctype(self):
|
||||
xxe.SENTINEL = "realxmlsentinel2"
|
||||
ent = "efgh"
|
||||
subset = '<!ENTITY %s "%s">' % (ent, xxe.SENTINEL)
|
||||
base = '<?xml version="1.0"?><!DOCTYPE u [<!ELEMENT n ANY>]><u><n>luther</n></u>'
|
||||
payload = xxe._placeRef(xxe._buildDoctype(base, "u", subset), "&%s;" % ent)
|
||||
self.assertIn(xxe.SENTINEL, self._expand(payload))
|
||||
|
||||
def test_attribute_entity_expands(self):
|
||||
xxe.SENTINEL = "attrsentinel"
|
||||
ent = "ijkl"
|
||||
subset = '<!ENTITY %s "%s">' % (ent, xxe.SENTINEL)
|
||||
payload = xxe._placeRef(xxe._buildDoctype('<u id="1"><n>x</n></u>', "u", subset), "&%s;" % ent, attrs=True)
|
||||
self.assertIn(xxe.SENTINEL, self._expand(payload))
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
unittest.main()
|
||||
Loading…
Add table
Add a link
Reference in a new issue