Bug 241008 – Too many login attempts allowed by vsftpd

Bug 241008 - Too many login attempts allowed by vsftpd

Summary:	Too many login attempts allowed by vsftpd

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 4
Classification:	Red Hat
Component:	vsftpd (Show other bugs)
Sub Component:
Version:	4.5
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Maros Barabas
QA Contact:
Docs Contact:

URL:
Whiteboard:
Keywords:	Reopened

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2007-05-23 12:32 EDT by John Robinson
Modified:	2007-11-16 20:14 EST (History)
CC List:	0 users

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2007-05-28 04:12:50 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
My vsftpd config (4.10 KB, text/plain) 2007-05-23 19:22 EDT, John Robinson	no flags	Details
My pam.d/vsftpd (452 bytes, text/plain) 2007-05-23 19:25 EDT, John Robinson	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description John Robinson 2007-05-23 12:32:55 EDT

Description of problem:
vsftpd doesn't kill the session after too many login attempts

Version-Release number of selected component (if applicable):
2.0.1-5.EL4.5

How reproducible:
100%

Steps to Reproduce:
1.Use rubbish login details 10, 100, 1e81 times
2.
3.
  
Actual results:
It doesn't kick you off

Expected results:
It should kick you off

Additional info:
Logwatch tells me:
 (148.243.223.220): john - 2432 Time(s)
 (148.243.223.220): jeff - 364 Time(s)
 (148.243.223.220): amanda - 2432 Time(s)
I have a firewall config which limits repeated connections from the same IP, so
the above couldn't happen if it was caused by multiple connections.

I note that vsftpd 2.0.5 has a change to "Kick session after a few login fails.
Allows IP blocking solutions to be more immediately effective." -
ftp://vsftpd.beasts.org/users/cevans/untar/vsftpd-2.0.5/Changelog - so I wonder
if this could be added into an update to the RHEL release.

Comment 1 Maros Barabas 2007-05-23 17:40:15 EDT

Attach your vsftpd configuration please. Thanks

Comment 2 John Robinson 2007-05-23 19:22:58 EDT

Created attachment 155306 [details]
My vsftpd config

Not too far from stock, I think

Comment 3 John Robinson 2007-05-23 19:25:59 EDT

Created attachment 155307 [details]
My pam.d/vsftpd

Edited slightly, so users with valid shells CAN'T log in.

Comment 4 Maros Barabas 2007-05-24 04:14:04 EDT

Please add "max_login_fails" directive to your vsftpd configuration specifying
the number of login failures before the session is killed.

Comment 5 John Robinson 2007-05-24 05:53:25 EDT

Doing so causes my vsftpd to fail to start, apparently logging nothing at all. I
am using vsftpd-2.0.1 in EL4.

Comment 6 Maros Barabas 2007-05-28 04:12:50 EDT

I'm sorry. This feature has been added up to 2.0.4 release. If you want to
update vsftpd for RHEL 4 to current version (2.0.5), please open new appropriate
bug. Thanks

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