Date: Wed, 21 Jan 2004 18:42:25 -0800 (PST) From: Dany Nativel <dany@natzo.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/61701: Segmentation fault on OPIE when sequence number=-1 Message-ID: <200401220242.i0M2gPCK045935@www.freebsd.org> Resent-Message-ID: <200401220250.i0M2oKR1093765@freefall.freebsd.org>
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>Number: 61701 >Category: misc >Synopsis: Segmentation fault on OPIE when sequence number=-1 >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jan 21 18:50:20 PST 2004 >Closed-Date: >Last-Modified: >Originator: Dany Nativel >Release: 5.2 Release >Organization: >Environment: FreeBSD hermes.agora 5.2-RELEASE FreeBSD 5.2-RELEASE #9: Tue Jan 13 21:59:17 EST 2004 alpha@hermes.agora:/usr/obj/usr/src/sys/HERMES i386 >Description: When opie sequence number reaches -1 for a given user (no more s/key login), it's impossible to : 1) Use the regular Unix password (even if authorized and was working before) ... core dumped 2) Disable the OPIE login for this user using opiepasswd ... seg fault PS 1:How did OPIE worked in the first place with no mention to it in /etc/pam.d/login ? PS 2: /etc/pam.d/login (stock from 5.2R install) : code:auth required pam_nologin.so no_warn auth sufficient pam_self.so no_warn auth include system account requisite pam_securetty.so account include system session include system password include system >How-To-Repeat: A] LOGIN USING UNIX PASSWORD WHEN OPIE support has expired 1) from the user account : #opiepasswd -c -n 2 (any number in fact) 2) Quit the current session for login prompt : login : alpha otp-md5 2 he201 Password: 3) Enter valid s/key, loggout and repeat that process until reaching sequence number=-1 4) Then try to use you regular Unix password (I could use it when sequence key was <>-1): login: alpha otp-md5 -1 (null) ext Password: <- Unix password code:FreeBSD/i386 (local) (ttyv0) login: Jan 19 22:08:25 local kernel: pid 613 (login), uid 0:exited on signal 11 (core dumped) B] DISABLE OPIE LOGIN using opiepasswd when opie expired Using root account : #opiepasswd -d alpha (nb opiepasswd -c doesn't work either) Updating alpha: Segmentation fault (core dumped) local# Jan 19 22:10:06 local kernel: pid 627 (opiepasswd), uid 0: exited on signal 11 (core dumped) >Fix: --> Quick Fix : In order to allow my unlucky user to login back using his regular Unix password I had to remove the file /etc/opiekeys >Release-Note: >Audit-Trail: >Unformatted:
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