Re: Solaris telnet vulnberability - how many on your network?

[Joe Shamblin <wjs () cs duke edu>]

Casper.Dik () Sun COM wrote:
> > On Tue, 13 Feb 2007 Casper.Dik () Sun COM wrote:
> > > > On Tue, 13 Feb 2007 Casper.Dik () Sun COM wrote:
> > > > > > Am I missing something?  This vulnerability is close to 10 years old.
> > > > > > It was in one of the first versions of Solaris after Sun moved off of
> > > > > > the SunOS BSD platform and over to SysV.  It has specifically to do w=
> > > > > > ith
> > > > > > how arguments are processed via getopt() if I recall correctly.
> > > > > You're confused with AIX/Linux
> > > > >
> > > > > Solaris did not have the -f option in login until much later.
> > > > Hi Casper. While we have you here, any idea on when Sun will be patching
> > > > this issue?
> > > Now, follow the links from http://sunsolve.sun.com/tpatches
> > >
> > > Casper
> > Many thanks Casper! Can you give some more information on exactly what is
> > patched. Any Sun released advisory?
>
>
> The simplest possible fix on such short notice:
>
> http://cvs.opensolaris.org/source/diff/onnv/onnv-gate/usr/src/cmd/cmd-inet/usr.sbin/in.telnetd.c?r2=3629&r1=2923
>
> Casper


How about just uncommenting the following from /etc/default/login

# If CONSOLE is set, root can only login on that device.
# Comment this line out to allow remote login by root.
#
CONSOLE=/dev/console

Not a fix to be sure, but at least prevents a remote login.

Joe
--
Joe Shamblin                                    wjs () cs duke edu
Senior Systems Administrator             Department of Computer Science
(919) 660-6582                                  Duke University