TUCoPS :: SCO :: ciaci016.txt

SCO SCOterm Vulnerability



                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___

                             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

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

     GO SCOFORUM, and search the file library for these filenames:

        SSE009.LTR      (cover letter, compressed)
        SSE009.TAZ      (new binaries, compressed tar file)

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

sum -r

59495     4 sse009.ltr
15226   602 sse009.tar.Z


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
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