Date: 23 Oct 2001 18:21:04 -0000 From: ryanb@goddamnbastard.org To: FreeBSD-gnats-submit@freebsd.org Subject: bin/31457: OpenSSH 2.9 login(1) support broken Message-ID: <20011023182104.23219.qmail@bjorn.goddamnbastard.org>
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>Number: 31457
>Category: bin
>Synopsis: OpenSSH 2.9 login(1) support broken
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Oct 23 11:30:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: ryan beasley
>Release: FreeBSD 4.4-STABLE i386
>Organization:
>Environment:
FreeBSD backup.enteract.com 4.4-STABLE FreeBSD 4.4-STABLE #1: Tue Oct 16 17:35:08 CDT 2001 ryanb@backup.enteract.com:/usr/obj/usr/src/sys/BACKUP i386
(snapshot taken at 2001.10.01 00:00:00 GMT)
sshd version OpenSSH_2.9 FreeBSD localisations 20010713
SSH Version OpenSSH_2.3.0 green@FreeBSD.org 20010321, protocol versions 1.5/2.0. Compiled with SSL (0x0090601f)
OpenSSH_2.9 FreeBSD localisations 20010713, SSH protocols 1.5/2.0, OpenSSL 0x0090601f
>Description:
When UseLogin is set to 1 in sshd(8)'s config, all login attempts
without a command to execute remotely cause the sshd child process
to catch SIGSEGV and most likely dump core. Peeking at such a dump,
we find a problem in the code that handles setting up the user's
environment. Please the check the following URL for what I think is
useful debugging info.
http://www.freebsd.org/cgi/getmsg.cgi?fetch=547458+0+/usr/local/www/db/text/2001/freebsd-stable/20011021.freebsd-stable
>How-To-Repeat:
Easy. Set UseLogin to yes in your sshd configuration and start the
daemon. Follow that up with a standard SSH login:
server: backup
client: akerfeldt
> [ryanb@akerfeldt ~] $ date
> Tue Oct 23 12:38:34 CDT 2001
> [ryanb@akerfeldt ~] $ ssh backup
> ryanb@backup's password:
> Connection to backup closed.
>
> Oct 23 12:38:37 backup /kernel: pid 20327 (sshd), uid 0: exited on signal 11 (core dumped)
>Fix:
I'm going to look into this again in the near future, but I have no
idea whatsoever.
>Release-Note:
>Audit-Trail:
>Unformatted:
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