---------- Forwarded message ---------- Date: Tue, 13 Oct 1998 12:21:58 -0400 From: CERT Bulletin <cert-advisoryat_private> Reply-To: cert-advisory-requestat_private To: cert-advisoryat_private Subject: CERT Vendor-Initiated Bulletin VB-98.10 - sco.mscreen -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= CERT* Vendor-Initiated Bulletin VB-98.10 October 13, 1998 Topic: Security Vulnerabilities in "mscreen" Serial Multiscreens Utility Source: SCO To aid in the wide distribution of essential security information, the CERT Coordination Center is forwarding the following information from 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 98.05 October 6, 1998 Security Vulnerabilities in "mscreen" Serial Multiscreens Utility - --------------------------------------------------------------------------- I. Description Security vulnerabilities have been discovered in the SCO "mscreen" serial multiscreens utility. II. Impact The vulnerabilities could allow local users to gain root privileges. An exploit script for one of the vulnerabilities has been published, so we recommend that the patch described below be installed on all affected systems as soon as possible. III. Releases This problem exists on the following releases of SCO operating systems: - SCO Open Desktop/Open Server 3.0 (all, also SCO UNIX 3.2v4) - SCO OpenServer 5.0 (all, also SCO Internet FastStart) - SCO CMW+ 3.0 Other SCO products are not affected. IV. Solution For SCO CMW+, the mscreen utility is non-functional; however, a binary is installed on the system with the set-user-id attribute. This should be disabled by executing the following command logged in as root: # chmod 0 /usr/bin/mscreen For SCO OpenServer 5 and SCO Open Desktop/Open Server 3, SCO is providing an interim patch to address this issue in the form of a System Security Enhancement (SSE) package. SSE016 contains new versions of the mscreen binary for each system type. It is available for Internet download via anonymous ftp, and from the SCOFORUM on Compuserve. You can download the SSE package as follows: Anonymous ftp (World Wide Web URL): ftp://ftp.sco.COM/SSE/sse016.ltr (cover letter, ASCII text) ftp://ftp.sco.COM/SSE/sse016.tar.Z (new binaries, compressed tar file) Compuserve: GO SCOFORUM, and search Library 11 (SLS/SSE Files) for these filenames: SSE016.LTR (cover letter, ASCII text) SSE016.TAZ (new binaries, compressed tar file) Checksums (sum -r): 15726 5 sse016.ltr 31228 64 sse016.tar.Z V. Updates This bulletin is available for anonymous ftp download from ftp://ftp.sco.COM/SSE/security_bulletins/SB-98.05a, and will be updated as new information becomes available. The latest information on security vulnerabilities and fixes from SCO is available on the world-wide web at http://www.sco.com/security/ VI. Further Information: If you have further questions, contact your support provider. If you need to contact SCO, please send electronic mail to supportat_private, 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============================= If you believe that your system has been compromised, contact the CERT Coordination Center or your representative in the Forum of Incident Response and Security Teams (FIRST). See http://www.first.org/team-info/. We strongly urge you to encrypt any sensitive information you send by email. The CERT Coordination Center can support a shared DES key and PGP. Contact the CERT staff for more information. Location of CERT PGP key ftp://ftp.cert.org/pub/CERT_PGP.key CERT Contact Information - ------------------------ Email certat_private Phone +1 412-268-7090 (24-hour hotline) CERT personnel answer 8:30-5:00 p.m. EST (GMT-5)/EDT(GMT-4), and are on call for emergencies during other hours. Fax +1 412-268-6989 Postal address CERT Coordination Center Software Engineering Institute Carnegie Mellon University Pittsburgh PA 15213-3890 USA CERT publications, information about FIRST representatives, and other security-related information are available from http://www.cert.org/ ftp://ftp.cert.org/pub/ CERT advisories and bulletins are also posted on the USENET newsgroup comp.security.announce To be added to our mailing list for CERT advisories and bulletins, send your email address to cert-advisory-requestat_private In the subject line, type SUBSCRIBE your-email-address ========================================================================== * Registered U.S. Patent and Trademark Office. The CERT Coordination Center is part of the Software Engineering Institute (SEI). The SEI is sponsored by the U. S. Department of Defense. NO WARRANTY ANY MATERIAL FURNISHED BY CARNEGIE MELLON UNIVERSITY AND THE SOFTWARE ENGINEERING INSTITUTE IS FURNISHED ON AN "AS IS" BASIS. CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY KIND, EITHER EXPRESSED OR IMPLIED AS TO ANY MATTER INCLUDING, BUT NOT LIMITED TO, WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, EXCLUSIVITY OR RESULTS OBTAINED FROM USE OF THE MATERIAL. CARNEGIE MELLON UNIVERSITY DOES NOT MAKE ANY WARRANTY OF ANY KIND WITH RESPECT TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT INFRINGEMENT. ========================================================================== This file: ftp://ftp.cert.org/pub/cert_bulletins/VB-98.10.sco.mscreen -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNiNwnHVP+x0t4w7BAQHmMwQAlwO65WS2iuRQXuVU4HSkWtuqMCIkXaS1 LtiroIXGBLBVttsvqZgnqEGWW5rn4XuCL7g74KtIqeLKQHqyM2ZQk90tdr5dlnC2 WXULucKcVBjGzBjS1Y6CXMbUbWuc4IxxpWq6+sZvrwToYPu9s5difxeS6/eC8Mfz f8Xb7FVN8ek= =WBQR -----END PGP SIGNATURE-----
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 14:19:33 PDT