RE: [Full-disclosure] Solaris telnet vulnberability - how many onyour network?

[David Taylor]

A patch has been released.

http://sunsolve.sun.com/search/document.do?assetkey=3D1-26-102802-1


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David Taylor //Sr. Information Security Specialist
University of Pennsylvania Information Security=20
Philadelphia PA USA
(215) 898-1236
http://www.upenn.edu/computing/security/
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-----Original Message-----
From: full-disclosure-bounces@lists.grok.org.uk
[mailto:full-disclosure-bounces@lists.grok.org.uk] On Behalf Of Joe =
Shamblin
Sent: Tuesday, February 13, 2007 7:17 PM
To: Casper.Dik@Sun.COM
Cc: Oliver Friedrichs; bugtraq@securityfocus.com;
full-disclosure@lists.grok.org.uk; Gadi Evron
Subject: Re: [Full-disclosure] Solaris telnet vulnberability - how many
onyour network?


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=3D
>>>>>> 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?
>=20
>=20
> The simplest possible fix on such short notice:
>=20
>
http://cvs.opensolaris.org/source/diff/onnv/onnv-gate/usr/src/cmd/cmd-ine=
t/u
sr.sbin/in.telnetd.c?r2=3D3629&r1=3D2923
>=20
> 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=3D/dev/console

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

Joe
--=20
Joe Shamblin wjs@cs.duke.edu
Senior Systems Administrator Department of Computer Science
(919) 660-6582 Duke University

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