stages/identification: use random sleep

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
This commit is contained in:
Jens Langhammer 2021-11-06 14:50:35 +01:00
parent 13fbac30a2
commit f958aa6930
1 changed files with 3 additions and 1 deletions

View File

@ -1,5 +1,6 @@
"""Identification stage logic""" """Identification stage logic"""
from dataclasses import asdict from dataclasses import asdict
from random import SystemRandom
from time import sleep from time import sleep
from typing import Any, Optional from typing import Any, Optional
@ -78,7 +79,8 @@ class IdentificationChallengeResponse(ChallengeResponse):
pre_user = self.stage.get_user(uid_field) pre_user = self.stage.get_user(uid_field)
if not pre_user: if not pre_user:
sleep(0.150) # Sleep a random time (between 90 and 210ms) to "prevent" user enumeration attacks
sleep(0.30 * SystemRandom().randint(3, 7))
LOGGER.debug("invalid_login", identifier=uid_field) LOGGER.debug("invalid_login", identifier=uid_field)
identification_failed.send(sender=self, request=self.stage.request, uid_field=uid_field) identification_failed.send(sender=self, request=self.stage.request, uid_field=uid_field)
# We set the pending_user even on failure so it's part of the context, even # We set the pending_user even on failure so it's part of the context, even