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Security: Pass random 32 character string as OAuth request state and validate response

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This commit is contained in:
Hannes Ortmeier 2025-01-07 11:02:37 +01:00
parent 485237caf1
commit 9eee6227e8
2 changed files with 31 additions and 6 deletions
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31
src/documents/views.py
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@ -4,6 +4,7 @@ import logging
import os
import platform
import re
import secrets
import tempfile
import urllib
import zipfile
@ -11,6 +12,7 @@ from datetime import datetime
from pathlib import Path
from time import mktime
from unicodedata import normalize
from urllib.parse import parse_qs
from urllib.parse import quote
from urllib.parse import urlparse
@ -1714,13 +1716,34 @@ class UiSettingsView(GenericAPIView):
ui_settings["auditlog_enabled"] = settings.AUDIT_LOG_ENABLED
if settings.GMAIL_OAUTH_ENABLED or settings.OUTLOOK_OAUTH_ENABLED:
state = secrets.token_urlsafe(32)
manager = PaperlessMailOAuth2Manager()
if settings.GMAIL_OAUTH_ENABLED:
ui_settings["gmail_oauth_url"] = manager.get_gmail_authorization_url()
gmail_oauth_url = manager.get_gmail_authorization_url(state)
# Validate the URL
parsed_url_query = parse_qs(urlparse(gmail_oauth_url).query)
if (
parsed_url_query.get("state")
and parsed_url_query.get("state")[0] != state
):
logger.error(
f"Invalid oauth callback {gmail_oauth_url} for state {state}",
)
raise ValueError("State not found in authorization url")
ui_settings["gmail_oauth_url"] = gmail_oauth_url
if settings.OUTLOOK_OAUTH_ENABLED:
ui_settings["outlook_oauth_url"] = (
manager.get_outlook_authorization_url()
)
outlook_oauth_url = manager.get_outlook_authorization_url(state)
# Validate the URL
parsed_url_query = parse_qs(urlparse(outlook_oauth_url).query)
if (
parsed_url_query.get("state")
and parsed_url_query.get("state")[0] != state
):
logger.error(
f"Invalid oauth callback {outlook_oauth_url} for state {state}",
)
raise ValueError("State not found in authorization url")
ui_settings["outlook_oauth_url"] = outlook_oauth_url
ui_settings["email_enabled"] = settings.EMAIL_ENABLED

6
src/paperless_mail/oauth.py
View File

@ -43,16 +43,17 @@ class PaperlessMailOAuth2Manager:
def oauth_redirect_url(self) -> str:
return f"{'http://localhost:4200/' if settings.DEBUG else settings.BASE_URL}mail" # e.g. "http://localhost:4200/mail" or "/mail"
def get_gmail_authorization_url(self) -> str:
def get_gmail_authorization_url(self, state: str) -> str:
return asyncio.run(
self.gmail_client.get_authorization_url(
redirect_uri=self.oauth_callback_url,
scope=["https://mail.google.com/"],
extras_params={"prompt": "consent", "access_type": "offline"},
state=state,
),
)
def get_outlook_authorization_url(self) -> str:
def get_outlook_authorization_url(self, state: str) -> str:
return asyncio.run(
self.outlook_client.get_authorization_url(
redirect_uri=self.oauth_callback_url,
@ -60,6 +61,7 @@ class PaperlessMailOAuth2Manager:
"offline_access",
"https://outlook.office.com/IMAP.AccessAsUser.All",
],
state=state,
),
)