Brute-force attack cause looping logged user in foreman
Description of problem:
When I'm logged in UI and somebody triggers brute-force attack protection by number of failed UI logins, mine session hangs in infinite reload loop
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Log in to UI
2. Make sure Settings -> Authentication -> failed_login_attempts_limit is set to default 30 (or set it to some lower, non-0 number)
3. In different browser/browser profile trigger brute-force attack protection by number of failed UI logins (you need to make it in below 5 minutes which is a default timeout)
4. Note how your original UI session from step "1." looks like now
Original UI session is in infinite reload loop
Either original session remains functional (preferred) or user is notified brute-force attack protection was activated and he should investigate results and try again later
As this way I can disconnect any user from Satellite without having any valid Satellite or OS account, should this be considered a security issue?
#1 Updated by Lukas Zapletal 5 months ago
This sounds like a regular and simple DDoS attack, passenger is likely having bad time serving all those requests. I recommend deploying a proxy or Apache throttling module to prevent from that. Those excessive requests must be stopped before passenger starts processing them.
I think this should be documentation only resolution - we should document how to prevent from those attacks.
#2 Updated by Marek Hulán 5 months ago
If passenger only tries to login user, I don't think it's a big issue. I actually think it's fine that our app has a counter of failed attempts. We already have that feature in. This is just how to deal with already logged in users (in this case QE tests) that cause the brute-force alert.
For what you suggest, I don't know how Apache would know you're sending incorrect credentials, perhaps based on return code from login form? Is there some module for this purpose? This is not about flooding the server with requests but about trying incorrect password for multiple times and preventing you from more tries for some time if it happens...