Hi all,
Thought you might want to know about a security advisory from SGI included below.
The exploit is out of the bag. Links to the exploit code and a fix are published on
http://www.securityfocus.com in the Bugtraq, archive section on Aug 14.
Note that it supposedly affects all versions of IRIX 6.2 or higher.
-- Rudi
------ Forwarded message ------
From: agent99@csd.sgi.com (SGI Security Coordinator)
Subject: IRIX telnetd vulnerability
Date: Mon, 14 Aug 2000 15:13:04 -0700 (PDT)
To: agent99@sgi.com
Reply-To: agent99@csd.sgi.com (SGI Security Coordinator)
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SGI Security Advisory
Title: IRIX telnetd vulnerability
Number: 20000801-01-A
Date: August 14, 2000
______________________________________________________________________________
SGI provides this information freely to the SGI user community for its
consideration, interpretation, implementation and use. SGI recommends
that this information be acted upon as soon as possible.
SGI provides the information in this Security Advisory on an "AS-IS" basis
only, and disclaims all warranties with respect thereto, express, implied
or otherwise, including, without limitation, any warranty of merchantability
or fitness for a particular purpose. In no event shall SGI be liable for
any loss of profits, loss of business, loss of data or for any indirect,
special, exemplary, incidental or consequential damages of any kind arising
from your use of, failure to use or improper use of any of the instructions
or information in this Security Advisory.
______________________________________________________________________________
SGI acknowledges the telnetd vulnerability reported by LSD on BUGTRAQ and
is currently investigating. No further information is available at this time.
As further information becomes available, additional advisories will be
issued via the normal SGI security information distribution methods
including the wiretap mailing list.
For the protection of all our customers, SGI does not disclose, discuss
or confirm vulnerabilities until a full investigation has occurred and
any necessary patch(es) or release streams are available for all vulnerable
and supported Unicos, SGI ProPack for Linux and IRIX operating systems.
Until SGI has more definitive information to provide, customers
are encouraged to assume all security vulnerabilities as exploitable and take
appropriate steps according to local site security policies and requirements.
The steps below can be used to disable IRIX telnetd daemon, if needed.
================
**** NOTE ****
================
Disabling telnetd daemon will disable the telnet service.
1) Become the root user on the system.
% /bin/su -
Password:
#
2) Edit the file /etc/inetd.conf (for IRIX 5.3 and lower,
edit /usr/etc/inetd.conf) with your favorite text editor.
Place a "#" as the first character of the line to comment out
and deactivate the telnetd daemon.
# vi /etc/inetd.conf
{Find the following line}
telnet stream tcp nowait root /usr/etc/telnetd telnetd
{Place a "#" as the first character of the telnet line}
#telnet stream tcp nowait root /usr/etc/telnetd telnetd
{Save the file}
3) Force inetd to re-read the configuration file.
# /etc/killall -HUP inetd
4) Kill any existing telnetd process.
# /etc/killall telnetd
5) Return to previous level.
# exit
%
- -----------------------------------------
- --- SGI Security Information/Contacts ---
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cse-security-alert@sgi.com.
------oOo------
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needing the information and is available via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com (204.94.209.1). Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
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the URL http://www.sgi.com/support/security/ .
For issues with the patches on the FTP sites, email can be sent to
cse-security-alert@sgi.com.
For assistance obtaining or working with security patches, please
contact your SGI support provider.
------oOo------
SGI provides a free security mailing list service called wiretap and
encourages interested parties to self-subscribe to receive (via email) all
SGI Security Advisories when they are released. Subscribing to the mailing
list can be done via the Web (http://www.sgi.com/support/security/wiretap.html)
or by sending email to SGI as outlined below.
% mail wiretap-request@sgi.com
subscribe wiretap <YourEmailAddress>
end
^d
In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to. The word end must be on a
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------oOo------
SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .
------oOo------
For reporting *NEW* SGI security issues, email can be sent to
security-alert@sgi.com or contact your SGI support provider. A
support contract is not required for submitting a security report.
______________________________________________________________________________
This information is provided freely to all interested parties and
may be redistributed provided that it is not altered in any way,
SGI is appropriately credited and the document retains and includes
its valid PGP signature.
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University of California Email: nmrlab@purcell.cchem.berkeley.edu
College of Chemistry
NMR Facility
Berkeley, CA 94720-1460 Personal email: rnunlist@purcell.cchem.berkeley.edu
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