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Date: Tue, 12 Mar 2002 03:00:58 -0800 (PST)
From: Slawomir Parysek <irys@irc.pl>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: i386/35816: no one can change password, because "passwd DB is locked"
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>Number:         35816
>Category:       i386
>Synopsis:       no one can change password, because "passwd DB is locked"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 12 03:10:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Slawomir Parysek
>Release:        4.5-RELEASE
>Organization:
ArgNet
>Environment:
FreeBSD my.host.name.com.pl 4.5-RELEASE FreeBSD 4.5-RELEASE #0: Mon Jan 28 14:31:56 GMT 2002     murray@builder.freebsdmall.com:/usr/src/sys/compile/GENERIC  i386
>Description:
    When one (malicious) user edit his own passwd database (via $ chpass command), no one can change password, because "passwd DB is locked". Also root cant't change any information in passwd database, eg add/delete
    It is very importand problem especialy on systems whih acts as shell box (TM.).

>How-To-Repeat:
how to repeat, huh, thats simple:
log in into accont and leave an running "chpass" command on screen and log out, huh noone can change his/her passd and/or any other info by editing /etc/passwd* etc
>Fix:
      how to fix it? hmm... block acces to command chpass for all suspicous users ;-P
>Release-Note:
>Audit-Trail:
>Unformatted:

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