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S-92-08.asc
Posted Jan 10, 2000

Subject "IRIX" lp Vulnerability Date 10-apr-92

systems | irix
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S-92-08.asc

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===============================================================================
>> CERT-NL, 01-Mar-2000 <<
>> All CERT-NL information has been moved to http://cert.surfnet.nl. Links <<
>> to CERT-NL information contained in this advisory are therefore outdated. <<
>> <<
>> CERT-NL also has stopped the CERT-CC-Mirror service. Due to this the <<
>> links to the CERT-CC mirror are obsolete. Visit the CERT-CC site for the <<
>> complete CERT-CC advisory texts: http://www.cert.org <<
===============================================================================
===============================================================================
Security Advisory CERT-NL
===============================================================================
Author/Source : CERT-NL Index : S-92-08
Distribution : SURFnet Constituency Page : 1
Classification: External Version: final
Subject : "IRIX" lp Vulnerability Date : 10-apr-92
===============================================================================

CERT-NL (SURFnet Computer Emergency Response Team) has received
information concerning a security problem in SG's IRIX lp.

CERT-NL wishes to thank CERT/CC for bringing this to our attention.

- ---------------------------------------------------------------------------
CA-92:08 CERT Advisory
April 10, 1992
Silicon Graphics Computer Systems "IRIX" lp Vulnerability

- ---------------------------------------------------------------------------

The Computer Emergency Response Team/Coordination Center (CERT/CC) has
received information concerning a method of unauthorized root access
in the lp software in Silicon Graphics Computer Systems (SGI) IRIX
operating systems. This vulnerability is present in all current
versions of IRIX.

Silicon Graphics Computer Systems and the CERT/CC strongly recommend
that sites take immediate action to eliminate this vulnerability from
their systems.

This vulnerability will be fixed in IRIX 4.0.5 and is NOT present in any
version of the Trusted IRIX/B product.

- ---------------------------------------------------------------------------

I. Description

When IRIX pre-4.0.5 systems are installed or updated using either
the basic system software ("eoe1.sw.unix") or the system manager
software ("eoe2.sw.vadmin") media, a vulnerability is introduced
in the lp software.

II. Impact

Any user logged into the system can gain root access.

III. Solution

As root, execute the following commands:

# cd /usr/lib
# chmod a-s,go-w lpshut lpmove accept reject lpadmin
# chmod go-ws lpsched vadmin/serial_ports vadmin/users vadmin/disks
# cd /usr/bin
# chmod a-s,go-w disable enable
# chmod go-ws cancel lp lpstat

If the eoe2.sw.vadmin software is not installed, you may
ignore any warning messages from chmod such as:

"chmod: WARNING: can't access vadmin/serial_ports"

If system software should ever be reinstalled from pre-4.0.5
media or restored from a backup tape created before the patch was
applied, repeat the above procedure before enabling logins by
normal users.

- ---------------------------------------------------------------------------
The CERT/CC would like to thank Silicon Graphics Computer Systems for
bringing this security vulnerability to our attention and for their quick
response to this problem.
- ---------------------------------------------------------------------------

If you believe that your system has been compromised, contact CERT/CC or
your representative in FIRST (Forum of Incident Response and Security Teams).

Internet E-mail: cert@cert.sei.cmu.edu
Telephone: 412-268-7090 (24-hour hotline)
CERT/CC personnel answer 7:30 a.m.-6:00 p.m. EST(GMT-5)/EDT(GMT-4),
on call for emergencies during other hours.

Computer Emergency Response Team/Coordination Center (CERT/CC)
Software Engineering Institute
Carnegie Mellon University
Pittsburgh, PA 15213-3890

Past advisories, information about FIRST representatives, and other
information related to computer security are available for anonymous ftp
from cert.sei.cmu.edu (192.88.209.5).

Please note: cert.sei.cmu.edu is soon to become cert.org.

==============================================================================
CERT-NL is the Computer Emergency Response Team for SURFnet customers. SURFnet
is the Dutch network for educational, research and related institutes. CERT-NL
is a member of the Forum of Incident Response and Security Teams (FIRST).

All CERT-NL material is available under:
http://cert.surfnet.nl/

In case of computer or network security problems please contact your local
CERT/security-team or CERT-NL (if your institute is NOT a SURFnet customer
please address the appropriate (local) CERT/security-team).

CERT-NL is one/two hour(s) ahead of UTC (GMT) in winter/summer,
i.e. UTC+0100 in winter and UTC+0200 in summer (DST).

Email: cert-nl@surfnet.nl ATTENDED REGULARLY ALL DAYS
Phone: +31 302 305 305 BUSINESS HOURS ONLY
Fax: +31 302 305 329 BUSINESS HOURS ONLY
Snailmail: SURFnet bv
Attn. CERT-NL
P.O. Box 19035
NL - 3501 DA UTRECHT
The Netherlands

NOODGEVALLEN: 06 22 92 35 64 ALTIJD BEREIKBAAR
EMERGENCIES : +31 6 22 92 35 64 ATTENDED AT ALL TIMES
CERT-NL'S EMERGENCY PHONENUMBER IS ONLY TO BE USED IN CASE OF EMERGENCIES:
THE SURFNET HELPDESK OPERATING THE EMERGENCY NUMBER HAS A *FIXED*
PROCEDURE FOR DEALING WITH YOUR ALERT AND WILL IN REGULAR CASES RELAY IT
TO CERT-NL IN AN APPROPRIATE MANNER. CERT-NL WILL THEN CONTACT YOU.
===============================================================================

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