Mercurial > p > roundup > code
diff test/test_cgi.py @ 4880:ca692423e401
Different approach to fix XSS in issue2550817
Encapsulate the error/ok message append method as add_ok_message and
add_error_message. The new approach escapes the messages when appending
-- at a point in the code where we still know where the message comes
from. Escaping is the default but can bei turned off. This also fixes
issue2550836 where certain messages may contain links.
Another advantage of the new fix is that users don't need to change
installed trackers and are secure by default.
| author | Ralf Schlatterbeck <rsc@runtux.com> |
|---|---|
| date | Mon, 31 Mar 2014 18:19:23 +0200 |
| parents | 24b8011cd2dc |
| children | 3b9252085ba9 |
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--- a/test/test_cgi.py Sat Mar 29 11:59:37 2014 +0100 +++ b/test/test_cgi.py Mon Mar 31 18:19:23 2014 +0200 @@ -40,16 +40,40 @@ form.list.append(cgi.MiniFieldStorage(k, v)) return form -cm = client.clean_message +cm = client.add_message class MessageTestCase(unittest.TestCase): - # Note: We used to allow some html tags in error message. Now *only* - # newlines are allowed and messages are split at newlines. - # Note that tags are no longer escaped, see doc/upgrading.txt for - # the changes needed in the templates (Migrating from 1.5.0 to 1.5.1) - def testCleanMessageOK(self): - self.assertEqual(cm('a'), ['a']) - self.assertEqual(cm('a\nb'), ['a','b']) - self.assertEqual(cm('a\nb\nc\n'), ['a','b','c','']) + # Note: Escaping is now handled on a message-by-message basis at a + # point where we still know what generates a message. In this way we + # can decide when to escape and when not. We test the add_message + # routine here. + # Of course we won't catch errors in judgement when to escape here + # -- but at the time of this change only one message is not escaped. + def testAddMessageOK(self): + self.assertEqual(cm([],'a\nb'), ['a<br />\nb']) + self.assertEqual(cm([],'a\nb\nc\n'), ['a<br />\nb<br />\nc<br />\n']) + + def testAddMessageBAD(self): + self.assertEqual(cm([],'<script>x</script>'), + ['<script>x</script>']) + self.assertEqual(cm([],'<iframe>x</iframe>'), + ['<iframe>x</iframe>']) + self.assertEqual(cm([],'<<script >>alert(42);5<</script >>'), + ['<<script >>alert(42);5<</script >>']) + self.assertEqual(cm([],'<a href="y">x</a>'), + ['<a href="y">x</a>']) + self.assertEqual(cm([],'<A HREF="y">x</A>'), + ['<A HREF="y">x</A>']) + self.assertEqual(cm([],'<br>x<br />'), ['<br>x<br />']) + self.assertEqual(cm([],'<i>x</i>'), ['<i>x</i>']) + self.assertEqual(cm([],'<b>x</b>'), ['<b>x</b>']) + self.assertEqual(cm([],'<BR>x<BR />'), ['<BR>x<BR />']) + self.assertEqual(cm([],'<I>x</I>'), ['<I>x</I>']) + self.assertEqual(cm([],'<B>x</B>'), ['<B>x</B>']) + + def testAddMessageNoEscape(self): + self.assertEqual(cm([],'<i>x</i>',False), ['<i>x</i>']) + self.assertEqual(cm([],'<i>x</i>\n<b>x</b>',False), + ['<i>x</i><br />\n<b>x</b>']) class FormTestCase(unittest.TestCase): def setUp(self): @@ -672,7 +696,7 @@ cl.db = self.db cl.userid = userid cl.language = ('en',) - cl.error_message = [] + cl._error_message = [] cl.template = template return cl @@ -743,14 +767,14 @@ 'roles':'Admin'}, nodeid=None, userid='4') self.assertRaises(exceptions.Unauthorised, actions.NewItemAction(cl).handle) - self.assertEqual(cl.error_message,[]) + self.assertEqual(cl._error_message,[]) # this should work cl = self._make_client({'username':'new_user', 'password':'secret', '@confirm@password':'secret', 'address':'new_user@bork.bork'}, nodeid=None, userid='4') self.assertRaises(exceptions.Redirect, actions.NewItemAction(cl).handle) - self.assertEqual(cl.error_message,[]) + self.assertEqual(cl._error_message,[]) # don't allow changing (my own) username (in this example) cl = self._make_client(dict(username='new_user42'), userid='4') self.assertRaises(exceptions.Unauthorised, @@ -889,16 +913,16 @@ def testEditCSV(self): form = dict(rows='id,name\n1,newkey') cl = self._make_client(form, userid='1', classname='keyword') - cl.ok_message = [] + cl._ok_message = [] actions.EditCSVAction(cl).handle() - self.assertEqual(cl.ok_message, ['Items edited OK']) + self.assertEqual(cl._ok_message, ['Items edited OK']) k = self.db.keyword.getnode('1') self.assertEqual(k.name, 'newkey') form = dict(rows=u'id,name\n1,\xe4\xf6\xfc'.encode('utf-8')) cl = self._make_client(form, userid='1', classname='keyword') - cl.ok_message = [] + cl._ok_message = [] actions.EditCSVAction(cl).handle() - self.assertEqual(cl.ok_message, ['Items edited OK']) + self.assertEqual(cl._ok_message, ['Items edited OK']) k = self.db.keyword.getnode('1') self.assertEqual(k.name, u'\xe4\xf6\xfc'.encode('utf-8'))
