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- **************************************************************************
- Security Bulletin 9126 DISA Defense Communications System
- 19 December 1991 Published by: DDN Security Coordination Center
- (SCC@NIC.DDN.MIL) 1-(800) 365-3642
-
- DEFENSE DATA NETWORK
- SECURITY BULLETIN
-
- The DDN SECURITY BULLETIN is distributed by the DDN SCC (Security
- Coordination Center) under DISA contract as a means of communicating
- information on network and host security exposures, fixes, & concerns
- to security & management personnel at DDN facilities. Back issues may
- be obtained via FTP (or Kermit) from NIC.DDN.MIL [192.112.36.5]
- using login="anonymous" and password="guest". The bulletin pathname is
- SCC:DDN-SECURITY-yynn (where "yy" is the year the bulletin is issued
- and "nn" is a bulletin number, e.g. SCC:DDN-SECURITY-9126).
- **************************************************************************
-
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
- ! !
- ! The following important advisory was issued by the Computer !
- ! Emergency Response Team (CERT) and is being relayed unedited !
- ! via the Defense Information Systems Agency's Security !
- ! Coordination Center distribution system as a means of !
- ! providing DDN subscribers with useful security information. !
- ! !
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
-
- ===========================================================================
- CA-91:22 CERT Advisory
- December 16, 1991
- SunOS OpenWindows V3.0 Patch
- ---------------------------------------------------------------------------
-
- The Computer Emergency Response Team/Coordination Center (CERT/CC) has
- received information concerning a vulnerability in Sun Microsystems,
- Inc. (Sun) OpenWindows version 3.0. This vulnerability exists on all
- sun4 and sun4c architectures running SunOS 4.1.1.
-
- Sun has provided a patch for this vulnerability. It is available
- through your local Sun Answer Center as well as through anonymous ftp
- from the ftp.uu.net (192.48.96.2) system in the /sun-dist directory.
-
- Fix PatchID Filename Checksum
- loadmodule 1076118 100448-01.tar.Z 04354 5
-
- Please note that Sun will occasionally update patch files. If you
- find that the checksum is different please contact Sun or the CERT/CC
- for verification.
-
- ---------------------------------------------------------------------------
-
- I. Description
-
- An OpenWindows, version 3, setuid program (loadmodule(8)) can be
- exploited to execute a user's program using the effective UID of root.
-
-
- II. Impact
-
- This vulnerability allows a local user to gain root access.
-
-
- III. Solution
-
- Obtain the patch from Sun or from ftp.uu.net and install, following the
- provided instructions.
-
- As root:
-
- 1. Move the existing loadmodule aside.
-
- # mv $OPENWINHOME/bin/loadmodule $OPENWINHOME/bin/loadmodule.orig
- # chmod 400 $OPENWINHOME/bin/loadmodule.orig
-
- 2. Copy the new loadmodule into the OpenWindows bin directory.
-
- # cp sun4/loadmodule $OPENWINHOME/bin/loadmodule
- # chown root $OPENWINHOME/bin/loadmodule
- # chmod 4755 $OPENWINHOME/bin/loadmodule
-
- See the README file provided with the patch for more information.
- ---------------------------------------------------------------------------
- The CERT/CC wishes to thank Ken Pon at Sun Microsystems, Inc. for alerting
- us to this vulnerability.
- ---------------------------------------------------------------------------
-
- If you believe that your system has been compromised, contact CERT/CC via
- telephone or e-mail.
-
- Internet E-mail: cert@cert.sei.cmu.edu
- Telephone: 412-268-7090 24-hour hotline:
- CERT/CC personnel answer 7:30a.m.-6:00p.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 and other information related to computer security are
- available for anonymous ftp from the cert.sei.cmu.edu (192.88.209.5)
- system.
-
-