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__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
___ __ __ _ ___
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__________________________________________________________
INFORMATION BULLETIN
SCO /usr/bin/X11/scoterm Vulnerability
November 26, 1997 19:00 GMT Number I-016
______________________________________________________________________________
PROBLEM: The Santa Cruz Operation has discovered a security
vulnerability in the implementation of scoterm.
PLATFORM: SCO Open Desktop/Open Server 3.0
SCO OpenServer 5.0
DAMAGE: Any user with an account on the system may be able to execute
arbitrary commands with root privileges.
SOLUTION: Apply patch as listed below
______________________________________________________________________________
VULNERABILITY Due to the risk that the exploit method may be revealed, the
ASSESSMENT: patch should be applied as soon as possible.
______________________________________________________________________________
[ Start CERT Advisory ]
=============================================================================
CERT* Vendor-Initiated Bulletin VB-97.14
November 25, 1997
Topic: Vulnerability in /usr/bin/X11/scoterm
Source: The Santa Cruz Operation, Inc. (SCO)
To aid in the wide distribution of essential security information, the
CERT Coordination Center is forwarding the following information from
The Santa Cruz Operation, Inc. (SCO). SCO urges you to act on this
information as soon as possible. SCO contact information is included
in the forwarded text below; please contact them if you have any
questions or need further information.
=======================FORWARDED TEXT STARTS HERE============================
SCO Security Bulletin 97:02
November 20, 1997
Vulnerability in /usr/bin/X11/scoterm
- -----------------------------------------------------------------------------
The Santa Cruz Operation has discovered the following problem present in
our software:
I. Description
A security vulnerability in the implementation of scoterm has been
identified which could allow unprivileged users to gain unauthorized
root access to the system.
II. Impact
Any user with an account on the system may be able to execute arbitrary
commands with root privileges.
A program which exploits this vulnerability is in existence, although
we do not believe it is currently being distributed. There is a risk
that the exploit method may be revealed, so the patch should be applied
as soon as possible.
III. Releases
This problem exists on the following releases of SCO operating systems:
- SCO Open Desktop/Open Server 3.0
- SCO OpenServer 5.0
The following releases are not vulnerable, and no patch is necessary:
- SCO CMW+ 3.0
- SCO UnixWare 2.1
IV. Solution
SCO is providing interim patches to address this issue in the form
of a System Security Enhancement (SSE) package. The SSE package
includes patches for all operating systems listed above.
The SSE package is available for Internet download via anonymous
ftp, and from the SCOFORUM on Compuserve.
If you are for some reason unable to access or install the patches,
you should temporarily disable scoterm by running the following
command as the root user:
# chmod 0 /usr/bin/X11/scoterm
You can download the SSE package as follows:
Anonymous ftp (World Wide Web URL)
- ---------------
ftp://ftp.sco.COM/SSE/sse009.ltr (cover letter, uncompressed)
ftp://ftp.sco.COM/SSE/sse009.tar.Z (new binaries, compressed tar
file)
Compuserve
- ------------
GO SCOFORUM, and search the file library for these filenames:
SSE009.LTR (cover letter, compressed)
SSE009.TAZ (new binaries, compressed tar file)
Checksums
- -----------
sum -r
59495 4 sse009.ltr
15226 602 sse009.tar.Z
Updates:
This bulletin is available for anonymous ftp download from
ftp://ftp.sco.COM/SSE/security_bulletins/SB.97:02a, and will be
updated as new information becomes available.
Further Information:
If you have further questions, contact your support provider. If you
need to contact SCO, please send electronic mail to support@sco.COM, or
contact SCO as follows.
USA/Canada: 6am-5pm Pacific Time (PST/PDT)
-----------
1-800-347-4381 (voice)
1-408-427-5443 (fax)
Pacific Rim, Asia, and Latin American customers: 6am-5pm Pacific
------------------------------------------------ Time (PST/PDT)
1-408-425-4726 (voice)
1-408-427-5443 (fax)
Europe, Middle East, Africa: 9am-5:30pm UK Time (GMT/BST)
----------------------------
+44 (0)1923 816344 (voice)
+44 (0)1923 817781 (fax)
========================FORWARDED TEXT ENDS HERE=============================
[ End CERT Advisory ]
______________________________________________________________________________
CIAC wishes to acknowledge the contributions of CERT & The Santa Cruz
Operation, Inc. for the information contained in this bulletin.
______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.
CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
Voice: +1 510-422-8193
FAX: +1 510-423-8002
STU-III: +1 510-423-2604
E-mail: ciac@llnl.gov
For emergencies and off-hour assistance, DOE, DOE contractor sites,
and the NIH may contact CIAC 24-hours a day. During off hours (5PM -
8AM PST), call the CIAC voice number 510-422-8193 and leave a message,
or call 800-759-7243 (800-SKY-PAGE) to send a Sky Page. CIAC has two
Sky Page PIN numbers, the primary PIN number, 8550070, is for the CIAC
duty person, and the secondary PIN number, 8550074 is for the CIAC
Project Leader.
Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.
World Wide Web: http://ciac.llnl.gov/
Anonymous FTP: ciac.llnl.gov (198.128.39.53)
Modem access: +1 (510) 423-4753 (28.8K baud)
+1 (510) 423-3331 (28.8K baud)
CIAC has several self-subscribing mailing lists for electronic
publications:
1. CIAC-BULLETIN for Advisories, highest priority - time critical
information and Bulletins, important computer security information;
2. SPI-ANNOUNCE for official news about Security Profile Inspector
(SPI) software updates, new features, distribution and
availability;
3. SPI-NOTES, for discussion of problems and solutions regarding the
use of SPI products.
Our mailing lists are managed by a public domain software package
called Majordomo, which ignores E-mail header subject lines. To
subscribe (add yourself) to one of our mailing lists, send the
following request as the E-mail message body, substituting
ciac-bulletin, spi-announce OR spi-notes for list-name:
E-mail to ciac-listproc@llnl.gov or majordomo@tholia.llnl.gov:
subscribe list-name
e.g., subscribe ciac-bulletin
You will receive an acknowledgment email immediately with a confirmation
that you will need to mail back to the addresses above, as per the
instructions in the email. This is a partial protection to make sure
you are really the one who asked to be signed up for the list in question.
If you include the word 'help' in the body of an email to the above address,
it will also send back an information file on how to subscribe/unsubscribe,
get past issues of CIAC bulletins via email, etc.
PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins. If you are not part of these
communities, please contact your agency's response team to report
incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
constituencies can be obtained via WWW at http://www.first.org/.
This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
owned rights. Reference herein to any specific commercial products,
process, or service by trade name, trademark, manufacturer, or
otherwise, does not necessarily constitute or imply its endorsement,
recommendation or favoring by the United States Government or the
University of California. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or the University of California, and shall not be used for
advertising or product endorsement purposes.
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