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Commit 97282105 authored by Robin Sonnabend's avatar Robin Sonnabend
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Add CSRF protection for GET action endpoints

parent fdf1600d
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decorators.py
View file @ 97282105
from flask import flash
from flask import request, flash, abort
from functools import wraps
from models.database import ALL_MODELS
from shared import current_user
from utils import get_csrf_token
import back
ID_KEY = "id"
......@@ -90,3 +91,14 @@ def require_publish_right(require_exist=True):
def require_admin_right(require_exist=True):
return require_right("admin", require_exist)
def protect_csrf(function):
@wraps(function)
def _decorated_function(*args, **kwargs):
token = request.args.get("csrf_token")
if token != get_csrf_token():
print(token, get_csrf_token())
abort(400)
return function(*args, **kwargs)
return _decorated_function
server.py
View file @ 97282105
......@@ -31,9 +31,9 @@ from shared import (
from utils import (
get_first_unused_int, get_etherpad_text, split_terms, optional_int_arg,
fancy_join, footnote_hash, get_git_revision, get_max_page_length_exp,
get_internal_filename)
get_internal_filename, get_csrf_token)
from decorators import (
db_lookup,
db_lookup, protect_csrf,
require_private_view_right, require_modify_right, require_publish_right,
require_admin_right)
from models.database import (
......@@ -89,6 +89,7 @@ app.jinja_env.filters["fancy_join"] = fancy_join
app.jinja_env.filters["footnote_hash"] = footnote_hash
app.jinja_env.tests["auth_valid"] = security_manager.check_user
app.jinja_env.tests["needs_date"] = needs_date_test
app.jinja_env.globals["get_csrf_token"] = get_csrf_token
additional_templates = getattr(config, "LATEX_LOCAL_TEMPLATES", None)
if additional_templates is not None and os.path.isdir(additional_templates):
......@@ -336,6 +337,7 @@ def show_type(protocoltype):
@app.route("/type/delete/<int:protocoltype_id>")
@login_required
@protect_csrf
@db_lookup(ProtocolType)
@require_admin_right()
@require_modify_right()
......@@ -382,6 +384,7 @@ def edit_reminder(meetingreminder):
@app.route("/type/reminder/delete/<int:meetingreminder_id>")
@login_required
@protect_csrf
@db_lookup(MeetingReminder)
@require_modify_right()
def delete_reminder(meetingreminder):
......@@ -434,6 +437,7 @@ def edit_default_top(protocoltype, defaulttop):
@app.route("/type/tops/delete/<int:defaulttop_id>")
@login_required
@protect_csrf
@db_lookup(DefaultTOP)
@require_modify_right()
def delete_default_top(defaulttop):
......@@ -445,6 +449,7 @@ def delete_default_top(defaulttop):
@app.route("/type/tops/move/<int:defaulttop_id>/<diff>/")
@login_required
@protect_csrf
@db_lookup(DefaultTOP)
@require_modify_right()
def move_default_top(defaulttop, diff):
......@@ -649,6 +654,7 @@ def show_protocol(protocol):
@app.route("/protocol/delete/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_admin_right()
@require_modify_right()
......@@ -663,6 +669,7 @@ def delete_protocol(protocol):
@app.route("/protocol/etherpull/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_modify_right()
def etherpull_protocol(protocol):
......@@ -781,6 +788,7 @@ def upload_new_protocol_by_file():
@app.route("/protocol/recompile/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_admin_right()
@require_modify_right()
......@@ -814,6 +822,7 @@ def get_protocol_template(protocol):
@app.route("/protocol/etherpush/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_modify_right()
def etherpush_protocol(protocol):
......@@ -848,6 +857,7 @@ def update_protocol(protocol):
@app.route("/protocol/publish/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_publish_right()
def publish_protocol(protocol):
......@@ -858,6 +868,7 @@ def publish_protocol(protocol):
@app.route("/prococol/send/private/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_modify_right()
def send_protocol_private(protocol):
......@@ -871,6 +882,7 @@ def send_protocol_private(protocol):
@app.route("/prococol/send/public/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_publish_right()
def send_protocol_public(protocol):
......@@ -884,6 +896,7 @@ def send_protocol_public(protocol):
@app.route("/protocol/reminder/<int:protocol_id>")
@login_required
@protect_csrf
@db_lookup(Protocol)
@require_modify_right()
def send_protocol_reminder(protocol):
......@@ -947,6 +960,7 @@ def edit_top(top):
@app.route("/protocol/top/delete/<int:top_id>")
@login_required
@protect_csrf
@db_lookup(TOP)
@require_modify_right()
def delete_top(top):
......@@ -961,6 +975,7 @@ def delete_top(top):
@app.route("/protocol/top/move/<int:top_id>/<diff>")
@login_required
@protect_csrf
@db_lookup(TOP)
@require_modify_right()
def move_top(top, diff):
......@@ -1145,6 +1160,7 @@ def show_todo(todo):
@app.route("/todo/delete/<int:todo_id>")
@login_required
@protect_csrf
@db_lookup(Todo)
@require_private_view_right()
def delete_todo(todo):
......@@ -1311,6 +1327,7 @@ def edit_document(document):
@app.route("/document/delete/<int:document_id>")
@login_required
@protect_csrf
@db_lookup(Document)
@require_admin_right()
@require_modify_right()
......@@ -1325,6 +1342,7 @@ def delete_document(document):
@app.route("/document/print/<int:document_id>")
@login_required
@protect_csrf
@db_lookup(Document)
@require_modify_right()
def print_document(document):
......@@ -1339,6 +1357,7 @@ def print_document(document):
@app.route("/decision/print/<int:decisiondocument_id>")
@login_required
@protect_csrf
@db_lookup(DecisionDocument)
@require_modify_right()
def print_decision(decisiondocument):
......@@ -1383,6 +1402,7 @@ def show_error(error):
@app.route("/error/delete/<int:error_id>")
@login_required
@protect_csrf
@db_lookup(Error)
@require_modify_right()
def delete_error(error):
......@@ -1434,6 +1454,7 @@ def edit_todomail(todomail):
@app.route("/todomail/delete/<int:todomail_id>")
@login_required
@protect_csrf
@db_lookup(TodoMail)
def delete_todomail(todomail):
name = todomail.name
......@@ -1478,6 +1499,7 @@ def edit_defaultmeta(defaultmeta):
@app.route("/defaultmeta/delete/<int:defaultmeta_id>")
@login_required
@protect_csrf
@db_lookup(DefaultMeta)
@require_admin_right()
@require_modify_right()
......@@ -1527,6 +1549,7 @@ def edit_decisioncategory(decisioncategory):
@app.route("/decisioncategory/delete/<int:decisioncategory_id>")
@login_required
@protect_csrf
@db_lookup(DecisionCategory)
@require_admin_right()
@require_modify_right()
......@@ -1688,6 +1711,7 @@ def feed_appointments_ical(protocoltype):
@app.route("/like/new")
@login_required
@protect_csrf
def new_like():
user = current_user()
parent = None
......@@ -1736,6 +1760,7 @@ def login():
@app.route("/logout")
@login_required
@protect_csrf
def logout():
if "auth" in session:
session.pop("auth")
......
templates/layout.html
View file @ 97282105
......@@ -50,7 +50,7 @@
</ul>
<ul class="nav navbar-nav navbar-right">
{% if check_login() %}
<li><a href="{{url_for("logout")}}">Logout</a></li>
<li><a href="{{url_for("logout", csrf_token=get_csrf_token())}}">Logout</a></li>
{% else %}
<li><a href="{{url_for("login")}}">Login</a></li>
{% endif %}
......
templates/macros.html
View file @ 97282105
......@@ -175,7 +175,7 @@ to not render a label for the CRSFTokenField -->
{% set verb = "likes" %}
{% endif %}
{% if add_link %}
<a href="{{url_for("new_like", next=request.url, **kwargs)}}">
<a href="{{url_for("new_like", csrf_token=get_csrf_token(), **kwargs)}}">
{% endif %}
<div class="likes-div">
<p>{{likes|length}} <span class="like-sign">&#x1f44d;</span></p>
......
templates/protocol-show.html
View file @ 97282105
......@@ -16,7 +16,7 @@
<div class="btn-group">
{% if has_modify_right %}
{% if config.ETHERPAD_ACTIVE and not protocol.public %}
<a class="btn {% if protocol.source is none %}btn-primary{% else %}btn-default{% endif %}" href="{{url_for("etherpull_protocol", protocol_id=protocol.id)}}">Aus Etherpad</a>
<a class="btn {% if protocol.source is none %}btn-primary{% else %}btn-default{% endif %}" href="{{url_for("etherpull_protocol", protocol_id=protocol.id, csrf_token=get_csrf_token())}}">Aus Etherpad</a>
{% endif %}
{% if protocol.source is not none %}
<a class="btn btn-primary" href="{{url_for("get_protocol_source", protocol_id=protocol.id)}}">Quelltext</a>
......@@ -26,23 +26,23 @@
{% endif %}
{% if not protocol.public %}
{% if config.ETHERPAD_ACTIVE %}
<a class="btn btn-primary" href="{{url_for("etherpush_protocol", protocol_id=protocol.id)}}"{% if large_time_diff %} onclick="return confirm('Bist du dir sicher, dass du das Template bereits in das Etherpad kopieren willst? Die Sitzung ist erst {% if time_diff.days != 1 %}in {{time_diff.days}} Tagen{% else %}morgen{% endif %}.');"{% endif %} target="_blank">Etherpad</a>
<a class="btn btn-primary" href="{{url_for("etherpush_protocol", protocol_id=protocol.id, csrf_token=get_csrf_token())}}"{% if large_time_diff %} onclick="return confirm('Bist du dir sicher, dass du das Template bereits in das Etherpad kopieren willst? Die Sitzung ist erst {% if time_diff.days != 1 %}in {{time_diff.days}} Tagen{% else %}morgen{% endif %}.');"{% endif %} target="_blank">Etherpad</a>
{% endif %}
{% endif %}
{% if not protocol.is_done() %}
<a class="btn btn-default" href="{{url_for("get_protocol_template", protocol_id=protocol.id)}}">Vorlage</a>
{% if config.MAIL_ACTIVE %}
<a class="btn btn-default" href="{{url_for("send_protocol_reminder", protocol_id=protocol.id)}}" onclick="return confirm('Bist du dir sicher, dass du manuell eine Einladung verschicken willst? Dies wird auch automatisch geschehen.');">Einladung versenden</a>
<a class="btn btn-default" href="{{url_for("send_protocol_reminder", protocol_id=protocol.id, csrf_token=get_csrf_token())}}" onclick="return confirm('Bist du dir sicher, dass du manuell eine Einladung verschicken willst? Dies wird auch automatisch geschehen.');">Einladung versenden</a>
{% endif %}
{% else %}
{% if config.MAIL_ACTIVE %}
<a class="btn btn-default" href="{{url_for("send_protocol_private", protocol_id=protocol.id)}}">Intern versenden</a>
<a class="btn btn-default" href="{{url_for("send_protocol_private", protocol_id=protocol.id, csrf_token=get_csrf_token())}}">Intern versenden</a>
{% if protocol.public %}
<a class="btn btn-default" href="{{url_for("send_protocol_public", protocol_id=protocol.id)}}">Öffentlich versenden</a>
<a class="btn btn-default" href="{{url_for("send_protocol_public", protocol_id=protocol.id, csrf_token=get_csrf_token())}}">Öffentlich versenden</a>
{% endif %}
{% endif %}
{% if not protocol.public %}
<a class="btn btn-default" href="{{url_for("publish_protocol", protocol_id=protocol.id)}}">Veröffentlichen</a>
<a class="btn btn-default" href="{{url_for("publish_protocol", protocol_id=protocol.id, csrf_token=get_csrf_token())}}">Veröffentlichen</a>
{% endif %}
{% endif %}
<a class="btn btn-default" href="{{url_for("show_type", protocoltype_id=protocol.protocoltype.id)}}">Typ</a>
......@@ -50,7 +50,7 @@
<a class="btn btn-success" href="{{url_for("download_document", document_id=protocol.get_compiled_document().id)}}">Download</a>
{% endif %}
{% if has_admin_right %}
<a class="btn btn-default" href="{{url_for("recompile_protocol", protocol_id=protocol.id)}}">Neu kompilieren</a>
<a class="btn btn-default" href="{{url_for("recompile_protocol", protocol_id=protocol.id, csrf_token=get_csrf_token())}}">Neu kompilieren</a>
<a class="btn btn-danger" href="{{url_for("delete_protocol", protocol_id=protocol.id)}}" onclick="return confirm('Bist du dir sicher, dass du das Protokoll {{protocol.get_short_identifier()}} löschen möchtest?');">Löschen</a>
{% endif %}
{% endif %}
......@@ -104,7 +104,7 @@
<li>
{{decision.content}}
{% if config.PRINTING_ACTIVE and has_private_view_right and decision.document is not none %}
<a href="{{url_for("print_decision", decisiondocument_id=decision.document.id)}}">Drucken</a>
<a href="{{url_for("print_decision", decisiondocument_id=decision.document.id, csrf_token=get_csrf_token())}}">Drucken</a>
{% endif %}
{{render_likes(decision.likes, decision_id=decision.id)}}</h2>
</li>
......
templates/protocol-tops-include.html
View file @ 97282105
......@@ -27,9 +27,9 @@
{% endif %}
{% if not protocol.is_done() and has_modify_right %}
<a href="{{url_for('edit_top', top_id=top.id)}}">Ändern</a>
<a href="{{url_for('move_top', top_id=top.id, diff=1)}}">Runter</a>
<a href="{{url_for('move_top', top_id=top.id, diff=-1)}}">Hoch</a>
<a href="{{url_for('delete_top', top_id=top.id)}}" onclick="return confirm('Bist du dir sicher, dass du den TOP {{top.name}} löschen möchtest?');">Löschen</a>
<a href="{{url_for('move_top', top_id=top.id, diff=1, csrf_token=get_csrf_token())}}">Runter</a>
<a href="{{url_for('move_top', top_id=top.id, diff=-1, csrf_token=get_csrf_token())}}">Hoch</a>
<a href="{{url_for('delete_top', top_id=top.id, csrf_token=get_csrf_token())}}" onclick="return confirm('Bist du dir sicher, dass du den TOP {{top.name}} löschen möchtest?');">Löschen</a>
{% endif %}
{% if has_private_view_right and top.description is not none and top.description|length > 0 %}
<span class="glyphicon glyphicon-info-sign"></span>
......
utils.py
View file @ 97282105
from flask import request
from flask import request, session
import random
import string
......@@ -14,6 +14,8 @@ import ipaddress
from socket import getfqdn
from uuid import uuid4
import subprocess
import os
import hashlib
import config
......@@ -258,3 +260,9 @@ def get_max_page_length_exp(objects):
def get_internal_filename(protocol, document, filename):
return "{}-{}-{}".format(protocol.id, document.id, filename)
def get_csrf_token():
if "_csrf" not in session:
session["_csrf"] = hashlib.sha1(os.urandom(64)).hexdigest()
return session["_csrf"]
views/tables.py
View file @ 97282105
from flask import Markup, url_for, request
from shared import date_filter, datetime_filter, time_filter, current_user
from utils import get_csrf_token
import config
......@@ -341,7 +342,8 @@ class ProtocolTypeTable(SingleValueTable):
]))]
action_part = [
Table.link(
url_for("delete_type", protocoltype_id=self.value.id),
url_for("delete_type", protocoltype_id=self.value.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du den Protokolltype "
"{} löschen möchtest?".format(self.value.name))
......@@ -371,10 +373,12 @@ class DefaultTOPsTable(Table):
top.number,
Table.concat([
Table.link(
url_for("move_default_top", defaulttop_id=top.id, diff=1),
url_for("move_default_top", defaulttop_id=top.id, diff=1,
csrf_token=get_csrf_token()),
"Runter"),
Table.link(
url_for("move_default_top", defaulttop_id=top.id, diff=-1),
url_for("move_default_top", defaulttop_id=top.id, diff=-1,
csrf_token=get_csrf_token()),
"Hoch"),
Table.link(
url_for(
......@@ -383,7 +387,8 @@ class DefaultTOPsTable(Table):
defaulttop_id=top.id),
"Ändern"),
Table.link(
url_for("delete_default_top", defaulttop_id=top.id),
url_for("delete_default_top", defaulttop_id=top.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du den Standard-TOP "
"{} löschen willst?".format(top.name))
......@@ -413,7 +418,8 @@ class MeetingRemindersTable(Table):
url_for("edit_reminder", meetingreminder_id=reminder.id),
"Ändern"),
Table.link(
url_for("delete_reminder", meetingreminder_id=reminder.id),
url_for("delete_reminder", meetingreminder_id=reminder.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du die Einladungsmail {} "
"Tage vor der Sitzung löschen willst?".format(
......@@ -452,7 +458,8 @@ class ErrorsTable(Table):
datetime_filter(error.datetime),
error.get_short_description(),
Table.link(
url_for("delete_error", error_id=error.id, next=request.path),
url_for("delete_error", error_id=error.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du den Fehler löschen "
"möchtest?")
......@@ -519,7 +526,8 @@ class TodosTable(Table):
if todo.protocoltype.has_modify_right(user):
row.append(Table.concat([
Table.link(url_for("edit_todo", todo_id=todo.id), "Ändern"),
Table.link(url_for("delete_todo", todo_id=todo.id), "Löschen")
Table.link(url_for("delete_todo", todo_id=todo.id,
csrf_token=get_csrf_token()), "Löschen")
]))
else:
row.append("")
......@@ -552,7 +560,8 @@ class TodoTable(SingleValueTable):
Table.link(
url_for("edit_todo", todo_id=self.value.id), "Ändern"),
Table.link(
url_for("delete_todo", todo_id=self.value.id), "Löschen",
url_for("delete_todo", todo_id=self.value.id,
csrf_token=get_csrf_token()), "Löschen",
confirm="Bist du dir sicher, dass du das Todo löschen "
"willst?")
]))
......@@ -592,7 +601,8 @@ class DecisionsTable(Table):
Table.link(
url_for(
"print_decision",
decisiondocument_id=decision.document.id),
decisiondocument_id=decision.document.id,
csrf_token=get_csrf_token()),
"Drucken")
if (config.PRINTING_ACTIVE
and decision.protocol.protocoltype.has_modify_right(user)
......@@ -634,11 +644,13 @@ class DocumentsTable(Table):
"Bearbeiten"))
if config.PRINTING_ACTIVE and document.protocol.has_modify_right(user):
links.append(Table.link(
url_for("print_document", document_id=document.id),
url_for("print_document", document_id=document.id,
csrf_token=get_csrf_token()),
"Drucken"))
if document.protocol.protocoltype.has_admin_right(user):
links.append(Table.link(
url_for("delete_document", document_id=document.id),
url_for("delete_document", document_id=document.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du das Dokument {} löschen "
"willst?".format(document.name)))
......@@ -675,7 +687,8 @@ class TodoMailsTable(Table):
url_for("edit_todomail", todomail_id=todomail.id),
"Ändern"),
Table.link(
url_for("delete_todomail", todomail_id=todomail.id),
url_for("delete_todomail", todomail_id=todomail.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du die "
"Todomailzuordnung {} zu {} löschen "
......@@ -707,7 +720,8 @@ class DefaultMetasTable(Table):
Table.link(
url_for("edit_defaultmeta", defaultmeta_id=meta.id), "Ändern"),
Table.link(
url_for("delete_defaultmeta", defaultmeta_id=meta.id),
url_for("delete_defaultmeta", defaultmeta_id=meta.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du das Metadatenfeld {} "
"löschen willst?".format(meta.name))
......@@ -739,7 +753,8 @@ class DecisionCategoriesTable(Table):
Table.link(
url_for(
"delete_decisioncategory",
decisioncategory_id=category.id),
decisioncategory_id=category.id,
csrf_token=get_csrf_token()),
"Löschen",
confirm="Bist du dir sicher, dass du die "
"Beschlusskategorie {} löschen "
......
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