Date: Thu, 26 Aug 2004 04:03:46 GMT From: Mitsuru Ogino <ogino@verama.net> To: freebsd-gnats-submit@FreeBSD.org Subject: conf/70973: script 800.loginfail dose not report 'Illegal user' login failures Message-ID: <200408260403.i7Q43kQq012340@www.freebsd.org> Resent-Message-ID: <200408260410.i7Q4APqh096528@freefall.freebsd.org>
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>Number: 70973
>Category: conf
>Synopsis: script 800.loginfail dose not report 'Illegal user' login failures
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Thu Aug 26 04:10:25 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator: Mitsuru Ogino
>Release: 5.2.1-RELEASE-p8
>Organization:
>Environment:
FreeBSD vic.verama.net 5.2.1-RELEASE-p8 FreeBSD 5.2.1-RELEASE-p8 #6: Tue Jun 1 18:43:31 JST 2004
root@vic.verama.net:/usr/src/sys/i386/compile/VIC i386
>Description:
Sshd(8) reports login failures. But the style of report is different between the failure caused by wrong user and that by wrong password. /etc/periodic/security/800.loginfail only report failure by wrong password.
It is important to know that someone attempt to login the system. So the system should report 'Illegal user' login failures to root.
>How-To-Repeat:
in /var/log/auth.log
Aug 26 01:47:25 vic sshd[68106]: Illegal user test from xxx.xxx.xxx.xxx
>Fix:
Use code to find pattern 'illegal user':
62c62
< n=$(catmsgs | grep -ia "^$yesterday.*fail" |
---
> n=$(catmsgs | egrep -ia "^$yesterday.*(fail|illegal user)" |
>Release-Note:
>Audit-Trail:
>Unformatted:
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