def check_www_redirect(url):
parsed = urlparse(url)
req = http_head(url, False)
# make sure we received a redirect response
if req.status_code >= 300 & req.status_code < 400:
location = req.headers.get("location")
if location is None:
return url
try:
parsed_location = urlparse(location)
location_domain = utils.get_domain(parsed_location.netloc)
domain = utils.get_domain(parsed.netloc)
if (domain.startswith("www")
and (not location_domain.startswith("www"))
and location_domain in domain):
parsed_location = parsed._replace(
netloc=parsed_location.netloc)
return urlunparse(parsed_location)
elif ((not domain.startswith("www"))
and location_domain.startswith("www")
and domain in location_domain):
parsed_location = parsed._replace(
netloc=parsed_location.netloc)
return urlunparse(parsed_location)
except ValueError:
return url
else:
return url
def command_ssl(args, urls):
for val in enumerate(urls):
url = utils.extract_url(val[1])
reporter.setup(utils.get_domain(url))
ssl.start(args, url)
def command_dns(args, urls):
for val in enumerate(urls):
url = utils.extract_url(val[1])
reporter.setup(utils.get_domain(url))
session = Session(args, url)
dns.start(session)
def check_404_response(url: str) -> Tuple[bool, Response, bool, Response]:
domain = utils.get_domain(url)
_get_404_handling(domain, url)
return (
_file_not_found_handling[domain]["file"],
_file_not_found_handling[domain]["file_res"],
_file_not_found_handling[domain]["path"],
_file_not_found_handling[domain]["path_res"],
)
def start(args, url):
print(f"Scanning: {url}")
# parse the URL, we'll need this
parsed = urlparse(url)
# get rid of any port number & credentials that may exist
domain = utils.get_domain(parsed.netloc)
# make sure it resolves
try:
socket.gethostbyname(domain)
except socket.gaierror as error:
print(f"Fatal Error: Unable to resolve {domain} ({str(error)})")
return
if parsed.scheme == "http":
try:
# check for TLS redirect
tls_redirect = network.check_ssl_redirect(url)
if tls_redirect != url:
print(f"Server redirects to TLS: Scanning: {tls_redirect}")
url = tls_redirect
parsed = urlparse(url)
except Exception as error:
output.debug_exception()
output.error(f"Failed to connect to {url} ({str(error)})")
return
www_redirect = network.check_www_redirect(url)
if www_redirect is not None and www_redirect != url:
print(f"Server performs WWW redirect: Scanning: {www_redirect}")
url = www_redirect
parsed = urlparse(url)
# check to see if we are looking at an HTTPS server
if parsed.scheme == "https":
if args.internalssl or utils.is_ip(domain) or utils.get_port(url) != 443:
# use internal scanner
ssl_internal.scan(args, url, domain)
else:
try:
ssl_labs.scan(args, url, domain)
except Exception as error:
output.debug_exception()
output.error(f"Error running scan with SSL Labs: {str(error)}")
if args.tdessessioncount:
ssl_sweet32.scan(args, url, domain)
def _get_ip(res: HTTPResponse) -> Union[str, None]:
loc = res.getheader("Location")
if loc is not None:
# it's a redirect, check to see if there's an IP in it
parsed = urlparse(loc)
domain = utils.get_domain(parsed.netloc)
if utils.is_ip(domain):
# it's an IP, now, is it private?
if utils.is_private_ip(domain):
return domain
else:
return None
return None
def check_hsts_preload(url: str) -> List[dict]:
hsts_service = "https://hstspreload.com/api/v1/status/"
results: List[dict] = []
domain = utils.get_domain(url)
if not checkers.is_ip_address(domain):
while domain.count(".") > 0:
# get the HSTS preload status for the domain
res, _ = network.http_json(f"{hsts_service}{domain}")
results.append(res)
domain = domain.split(".", 1)[-1]
if PublicSuffixList().is_public(domain):
break
return results
def get_results(soup: BeautifulSoup, url: str, res: Response) -> List[Result]:
global _reports
results: List[Result] = []
try:
parsed = urlparse(url)
domain = utils.get_domain(parsed.netloc)
issues, r = _get_retirejs_results(soup, url, domain, res)
results += r
for js_url, issue in issues:
comp = issue["component"]
ver = issue["version"]
if "vulnerabilities" in issue:
for vuln in issue["vulnerabilities"]:
info = (
f'Vulnerable JavaScript: {comp}-{ver} ({js_url}): Severity: {vuln["severity"]} - '
f'Info: {" ".join(vuln["info"])}'
)
# make sure we haven't reported this issue before
if info not in _reports:
_reports.append(info)
results.append(
Result.from_evidence(
Evidence.from_response(
res,
{
"js_file": js_url,
"js_lib": comp,
"js_lib_ver": ver,
"vuln_info": list(vuln["info"]),
"vuln_sev": vuln["severity"],
},
),
info,
Vulnerabilities.JS_VULNERABLE_VERSION,
)
)
except Exception:
output.debug_exception()
return results
def start(args, url):
print(f"Scanning: {url}")
# parse the URL, we'll need this
parsed = urlparse(url)
# get rid of any port number & credentials that may exist
domain = utils.get_domain(parsed.netloc)
# make sure it resolves
try:
socket.gethostbyname(domain)
except socket.gaierror as error:
print(f"Fatal Error: Unable to resolve {domain} ({str(error)})")
return
dns.scan(args, url, domain)
def check_telerik_rau_enabled(soup: BeautifulSoup, url: str) -> List[Result]:
results: List[Result] = []
parsed = urlparse(url)
domain = utils.get_domain(parsed.netloc)
try:
# get all the scripts
files = [i.get("src") for i in soup.find_all("script") if i.get("src")]
for file in files:
if "Telerik.Web.UI.WebResource.axd" in file:
# ok, they are using Telerik UI for ASP.NET AJAX
# fix-up the URL
if str(file).startswith("//"):
file = f"https:{file}"
if str(file).startswith("/") or (not str(file).startswith("http")):
if parsed.scheme == "https":
file = urljoin(f"https://{domain}", file)
else:
file = urljoin(f"http://{domain}", file)
target = urlparse(file)
target = target._replace(query="type=rau")
if domain in target:
res = network.http_get(urlunparse(target), False)
# NOTE: Typo in "succesfully" is intentional - do not fix
if "RadAsyncUpload handler is registered succesfully" in res.text:
results.append(
Result.from_evidence(
Evidence.from_response(res, {"original_url": url}),
f"Telerik UI for ASP.NET AJAX RadAsyncUpload Enabled "
f"(Check for CVE-2019-18935) at {target}",
Vulnerabilities.APP_TELERIK_UI_RAD_ASYNC_UPLOAD_ENABLED,
)
)
break
except Exception:
output.debug_exception()
return results
def update_url(self, url: str):
self.url = url
self.url_parsed = urlparse(url)
self.domain = utils.get_domain(self.url_parsed.netloc)
def __init__(self, args: Namespace, url: str):
self.args = args
self.url = url
self.url_parsed = urlparse(url)
self.domain = utils.get_domain(self.url_parsed.netloc)
def test_get_domain_ipv6_port(self):
self.assertEqual(
"[3ffe:2a00:100:7031::1]", get_domain("[3ffe:2a00:100:7031::1]:80")
)
def test_get_domain_ipv4_port(self):
self.assertEqual("127.0.0.1", get_domain("127.0.0.1:80"))
def test_get_domain_ipv4_creds_port(self):
self.assertEqual("127.0.0.1", get_domain("user:[email protected]:80"))
def test_get_domain_creds_port(self):
self.assertEqual("adamcaudill.com", get_domain("user:[email protected]:80"))
def http_file_exists(
url: str, allow_redirects=True, timeout: Optional[int] = 30
) -> Tuple[bool, Response]:
# first, check our 404 handling
domain = utils.get_domain(url)
_get_404_handling(domain, url)
if _file_not_found_handling[domain]["file"]:
if _file_not_found_handling[domain]["head"]:
# we have good HEAD handling - we will start with head, as it's more efficient for us
head = http_head(url, allow_redirects=allow_redirects, timeout=timeout)
# check for ok, and for server-side errors
if head.status_code == 200 or head.status_code >= 500:
# file exists, grab it
get = http_get(url, allow_redirects=allow_redirects, timeout=timeout)
return True, get
else:
return False, head
else:
# head isn't handled properly, default to GET
get = http_get(url, allow_redirects=allow_redirects, timeout=timeout)
return get.status_code == 200, get
else:
# the server doesn't handle 404s properly - there are a few different flavors of this issue, each
# different version requires a different approach
file_res = cast(Response, _file_not_found_handling[domain]["file_res"])
if file_res.status_code == 200:
# in this case, everything gets a 200, even if it doesn't exist
# to handle this, we need to look at the response, and see if we can work out if it's
# a file not found error, or something else.
get = http_get(url, allow_redirects=allow_redirects, timeout=timeout)
if response_body_is_text(file_res):
if response_body_is_text(get):
# in case the responses are the same, check that first, then move on to comparing
# this should be caught by the code below, but this is faster
if file_res.content == get.content:
return False, get
# both are text, so we need to compare to see how similar they are
with ExecutionTimer() as tm:
ratio = SequenceMatcher(None, file_res.text, get.text).ratio()
output.debug(
f"Fuzzy Matching used. Text from known 404 and '{get.url}' compared in {tm.to_ms()}ms"
)
# check to see if we have an alignment of less than 90% between the known 404, and this response
# if it's less than 90%, we will assume that the response is different, and we have a hit
# this is somewhat error prone, as it depends on details of how the application works, though
# most errors should be very similar, so the false positive rate should be low.
if ratio < 0.9:
output.debug(
f"Fuzzy Matching used. Text from known 404 and '{get.url}' have a "
f"similarity of {ratio} - assuming valid file."
)
return True, get
else:
return False, get
else:
# if file_res is text, and this isn't, safe to call this a valid hit
return True, get
else:
# this is a case that makes no sense. who knows what's going on here.
return file_res.content == get.content, get
elif file_res.status_code in range(300, 399):
# they are sending a redirect on file not found
# we can't honor the allow_redirects flag, as we can't tell if it's a legit redirect, or an error
# we should though get a 200 for valid hits
get = http_get(url, allow_redirects=False, timeout=timeout)
return get.status_code == 200, get
elif file_res.status_code >= 400:
# they are sending an error code that isn't 404 - in this case, we should still get a 200 on a valid hit
get = http_get(url, allow_redirects=allow_redirects, timeout=timeout)
return get.status_code == 200, get
else:
# shrug
get = http_get(url, allow_redirects=allow_redirects, timeout=timeout)
return get.status_code == 200, get
def test_get_domain_port(self):
self.assertEqual("adamcaudill.com", get_domain("adamcaudill.com:80"))
def test_get_domain_http(self):
self.assertEqual("adamcaudill.com", get_domain("http://adamcaudill.com"))
def test_get_domain_clean(self):
self.assertEqual("adamcaudill.com", get_domain("adamcaudill.com"))
def check_local_ip_disclosure(session: Session) -> List[Result]:
def _send_http_10_get(
con: Union[SslConnection, socket.socket]
) -> Tuple[str, HTTPResponse]:
req = (
"HEAD / HTTP/1.0\r\n"
"User-Agent: {user_agent}\r\n"
"Accept: */*\r\n\r\n".format(user_agent=network.YAWAST_UA)
)
if type(con) is SslConnection:
con.ssl_client.write(req.encode("utf_8"))
res = http_response_parser.HttpResponseParser.parse_from_ssl_connection(
con.ssl_client
)
else:
con.sendall(req.encode("utf_8"))
res = http_response_parser.HttpResponseParser.parse_from_socket(con)
return req, res
def _resp_to_str(res: HTTPResponse) -> str:
ver = "1.1" if res.version == 11 else "1.0"
body = f"HTTP/{ver} {res.code} {res.reason}\r\n"
for k, val in res.headers.items():
body += f"{k}: {val}\r\n"
return body
def _get_ip(res: HTTPResponse) -> Union[str, None]:
loc = res.getheader("Location")
if loc is not None:
# it's a redirect, check to see if there's an IP in it
parsed = urlparse(loc)
domain = utils.get_domain(parsed.netloc)
if utils.is_ip(domain):
# it's an IP, now, is it private?
if utils.is_private_ip(domain):
return domain
else:
return None
return None
def _get_result(client, prt):
req, resp = _send_http_10_get(client)
ip = _get_ip(resp)
if ip is not None:
results.append(
Result(
f"Private IP Found: {ip} via HTTP 1.0 Redirect",
Vln.SERVER_INT_IP_EXP_HTTP10,
session.url,
{
"request": req,
"response": _resp_to_str(resp),
"ip": {ip},
"port": prt,
},
)
)
results: List[Result] = []
if session.url_parsed.scheme == "https":
conn_tester = server_connectivity_tester.ServerConnectivityTester(
hostname=session.domain, port=utils.get_port(session.url)
)
server_info = conn_tester.perform()
conn = ssl_connection_configurator.SslConnectionConfigurator.get_connection(
ssl_version=OpenSslVersionEnum.SSLV23,
server_info=server_info,
should_ignore_client_auth=True,
ssl_verify_locations=None,
should_use_legacy_openssl=False,
)
try:
conn.connect()
_get_result(conn, utils.get_port(session.url))
except Exception:
output.debug_exception()
if session.supports_http:
url = session.get_http_url()
port = utils.get_port(url)
conn = socket.socket()
conn.connect((utils.get_domain(url), port))
try:
_get_result(conn, port)
except Exception:
output.debug_exception()
return results
def test_get_domain_ipv6_clean(self):
self.assertEqual(
"[3ffe:2a00:100:7031::1]", get_domain("[3ffe:2a00:100:7031::1]")
)
def test_get_domain_ipv4_clean(self):
self.assertEqual("127.0.0.1", get_domain("127.0.0.1"))
def start(args, url):
print(f"Scanning: {url}")
# parse the URL, we'll need this
parsed = urlparse(url)
# get rid of any port number & credentials that may exist
domain = utils.get_domain(parsed.netloc)
# make sure it resolves
try:
socket.gethostbyname(domain)
except socket.gaierror as error:
print(f"Fatal Error: Unable to resolve {domain} ({str(error)})")
return
# perform some connection testing
if parsed.scheme == "http":
try:
# check for TLS redirect
tls_redirect = network.check_ssl_redirect(url)
if tls_redirect != url:
print(f"Server redirects to TLS: Scanning: {tls_redirect}")
url = tls_redirect
parsed = urlparse(url)
except Exception:
output.debug_exception()
# we tried to connect to port 80, and it failed
# this could mean a couple things, first, we need to
# see if it answers to 443
parsed = parsed._replace(scheme="https")
url = urlunparse(parsed)
print("Server does not respond to HTTP, switching to HTTPS")
print()
print(f"Scanning: {url}")
# grab the head, to see if we get anything
try:
network.http_head(url, timeout=5)
print()
except Exception as err:
output.debug_exception()
print(f"Fatal Error: Can not connect to {url} ({str(err)})")
return
else:
# if we are scanning HTTPS, try HTTP to see what it does
try:
http_parsed = parsed._replace(scheme="http")
http_url = urlunparse(http_parsed)
network.http_head(http_url, timeout=5)
print("Server responds to HTTP requests")
print()
except Exception:
output.debug_exception()
print("Server does not respond to HTTP requests")
print()
# check for www redirect
www_redirect = network.check_www_redirect(url)
if www_redirect is not None and www_redirect != url:
print(f"Server performs WWW redirect: Scanning: {www_redirect}")
url = www_redirect
if not args.nodns:
dns.scan(args, url, domain)
# check to see if we are looking at an HTTPS server
if parsed.scheme == "https" and not args.nossl:
if args.internalssl or utils.is_ip(
domain) or utils.get_port(url) != 443:
# use internal scanner
ssl_internal.scan(args, url, domain)
else:
try:
ssl_labs.scan(args, url, domain)
except Exception as error:
output.debug_exception()
output.error(f"Error running scan with SSL Labs: {str(error)}")
if args.tdessessioncount:
ssl_sweet32.scan(args, url, domain)
http.scan(args, url, domain)
# reset any stored data
http.reset()
return
