CERT* Vendor-Initiated Bulletin VB-94:01 December 5, 1994 Topic: Patches for at(C), login(M), prwarn(C), sadc(ADM), pt_chmod Source: The Santa Cruz Operation (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. 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 Advisory 94:001 November 30th, 1994 Patches for at(C), login(M), prwarn(C), sadc(ADM), pt_chmod --------------------------------------------------------------------------- The Santa Cruz Operation has been informed of the following problems present in our software. I. Description The programs at(C), login(M), prwarn(C) sadc(ADM), and pt_chmod may each allow unauthorized root access to the system. There are four unrelated issues present, one for each program listed above. II. Impact Any user with an account on the system may obtain root access using any one of the programs listed. III. Releases These problems exist on the following releases of SCO Products: SCO Unix System V/386 Release 3.2 Versions 4.2, 4.1, and 4.0 SCO Open Desktop Lite Release 3.0 SCO Open Desktop Release 3.0 and 2.0 SCO Open Server Network System Release 3.0 SCO Open Server Enterprise System Release 3.0 IV. Solution SCO is providing the following (S)ystem (S)ecurity (E)nhancements, SSEs, to address these problems. These are preliminary patches which SCO feels addresses the issues at hand, but these patches have not been fully tested and integrated and hence cannot officially be supported. Official patches should be available in the near future via a (S)upport (L)evel (S)upplement. (SLS). The README file mentioned below will be updated when an official Supplement is available. Binary Patch ------ ------ at(C) sse001 login(M) sse002 prwarn(C) sse003 sadc(ADM) sse004 pt_chmod sse005 These are available at the following sites: Anonymous ftp: ftp.sco.COM:/SSE UUCP downloading, and SOS access: sosco (USA), scolon (Europe), in the directory /usr/spool/uucppublic/SSE. Note that access to these Supplements at scolon may not be available until December 2nd, 1994. The filename conventions are as follows: ssexxx.tar.Z - compressed tar file of supplement ssexxx.ltr.Z - compressed cover letter for supplement xxx indicates the number of the supplement, i.e. sse001.tar.Z. See the README file in the directories listed above for checksum information. Connection information is available at the end of this document. Please note that these Supplements are not generally available from SCO on diskette media. 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 Standard Time (PST) ----------- 1-800-347-4381 (voice) 1-408-427-5443 (fax) Pacific Rim, Asia, and Latin American customers: 6am-5pm Pacific ------------------------------------------------ Standard Time (PST) 1-408-425-4726 (voice) 1-408-427-5443 (fax) Europe, Middle East, Africa: 9am-5:30pm British Standard Time (BST) ---------------------------- +44 (0)923 816344 (voice) +44 (0)923 817781 (fax) Downloading Information ----------------------- ftp to ftp.sco.com Login name: ftp Password: your email address For anonymous UUCP connection: ------------------------------ For USA, Canada, Pacific Rim, Asia and Latin America customers: Machine name: sosco Login name: uusls (fourth character is the letter "l") No password List of modems available for UUCP transfer from sosco.sco.com: Standard V.32, (300-9600bps) 4@ 408-425-3502 Hayes V Series 9600 2@ 408-427-4470 Telebit Trailblazer 408-429-1786 For Europe/Middle East/Africa customers there is a system located at SCO EMEA (London): Machine name: scolon Login name: uusls Password: bbsuucp List of modems available for UUCP transfer from scolon.sco.com: Dowty Trailblazer +44 (0)923 210911 For SCO Online Support (SOS) BBS download: ------------------------------------------ For those customers that have accounts on SOS these files can be downloaded interactively via X, Y, Z MODEM or Kermit. Follow the menus selections under "Toolchest" from the main SOS menu. List of modems available for interactive transfer from sosco.sco.com: First four are Standard V.32 (300-9600bps) 408-426-9495 Last three are Hayes 2400 compatible Telebit Trailblazer 408-426-9525 For ftp via World Wide Web: --------------------------- URL to open: ftp://www.sco.com These problems, except for pt_chmod, were reported to the Santa Cruz Operation by the "[8LGM] Security Team", 8lgm@bagpuss.demon.co.uk. -------------------------- Here is the ftp.sco.com:/SSE/README file ----- Welcome to the System Security Enhancement (SSE) Area ---------------------------------------------------- The System Security Enhancement directory, (SSE), is here to provide timely fixes to problems with system security. Binaries acquired from this directory are to be considered preliminary fixes only, and have not been fully tested or integrated. As such, these patches are not officially supported. They are provided as a timely response to security concerns that have been brought to the attention of The Santa Cruz Operation. When final, approved patches are available, usually by a Support Level Supplement, the README files below will be modified to indicate the existence of the finalized version of the supplement. SCO reserves the right to change the contents of these supplements at any time. The format of the Supplements found here are as follows: ssexxx.tar.Z - a compressed tar file ssexxx.ltr.Z - cover letter, release information, and installation instructions where xxx indicates the number of the supplement. Please note that the ssexxx.tar.Z files are *not* diskette images. After downloading an SSE, uncompress both the tar file and the cover letter. For example, if you were trying to install SSE001, after downloading sse001.tar.Z and ssexxx.ltr.Z, you would uncompress both files: # uncompress ssexxx.tar.Z # uncompress ssexxx.ltr.Z After uncompressing both files, you should then follow the instructions provided in the sse001.ltr file for installation instructions. These Supplements should be available in the following locations: site directory method ---- --------- ------ ftp.sco.COM: /SSE Internet anonymous ftp sosco: /usr/spool/uucppublic/SSE UUCP download, SOS scolon: /usr/spool/uucppublic/SSE UUCP download, SOS List of New System Security Enhancements (last updated 11/29/94) ---------------------------------------------------------------- New on 11/29/94: sse001: at(C) Enhancement sse002: login(M) Enhancement sse003: prwarn(C) Enhancement see004: sadc(ADM) Enhancement sse005: pt_chmod Enhancement sse006: passwd(C) Enhancement CONNECTION INFORMATION ---------------------- For anonymous ftp connection: ----------------------------- ftp to sosco.sco.com Login name: ftp Password: your email address ftp to ftp.sco.com Login name: ftp Password: your email address (Please note that the ftp server that is running on these machines expects your Domain Name to be publically known to the net. Please contact your internet provider for more information on registering your Domain Name) ftp to ftp.uu.net (NOTE: areas are located in the ./sco-archive directory) Login name: ftp Password: your email address For anonymous UUCP connection: ------------------------------ For USA, Canada, Pacific Rim, Asia and Latin America customers: Machine name: sosco Login name: uusls (fourth character is the letter "l") No password List of modems available for UUCP transfer from sosco.sco.com: Standard V.32, (300-9600bps) 4@ 408-425-3502 Hayes V Series 9600 2@ 408-427-4470 Telebit Trailblazer 408-429-1786 For Europe/Middle East/Africa customers there is a system located at SCO EMEA (London): Machine name: scolon Login name: uusls Password: bbsuucp List of modems available for UUCP transfer from scolon.sco.com: Dowty Trailblazer +44 (0)923 210911 For SCO Online Support (SOS) BBS download: ------------------------------------------ For those customers that have accounts on SOS these files can be downloaded interactively via X, Y, Z MODEM or Kermit. Follow the menus selections under "Toolchest" from the main SOS menu. List of modems available for interactive transfer from sosco.sco.com: First four are Standard V.32 (300-9600bps) 408-426-9495 Last three are Hayes 2400 compatible Telebit Trailblazer 408-426-9525 For ftp via World Wide Web: --------------------------- URL to open: ftp://www.sco.com ------------------------------------------------------------------------------ List of available Security Enhancement (SSE) files: Numbers in parentheses are checksums of the files, generated using the "sum" utility with the -r option. Example: sum -r sse001.tar.Z NOTE: These files are for downloading only. They CANNOT be obtained from SCO on diskette. NOTE: Please see the ".ltr" files for a list of SCO platforms that these Enhancements apply to. Size in bytes File name (checksum) Description sse001.ltr.Z 2254 (62340) at(C) Enhancement sse001.tar.Z 28177 (01162) sse002.ltr.Z 2122 (64430) login(M) Enhancement sse002.tar.Z 60535 (24459) sse003.ltr.Z 2190 (39557) prwarn(C) Enhancement sse003.tar.Z 20742 (53203) sse004.ltr.Z 2491 (13484) sadc(ADM) Enhancement sse004.tar.Z 11936 (27375) sse005.ltr.Z 1025 (25407) pt_chmod Enhancement sse005.tar.Z 2414 (06033) sse006.ltr.Z 985 (36851) passwd(C) Enhancement sse006.tar.Z 86185 (19264) =========================FORWARDED TEXT ENDS HERE============================= CERT bulletins, CERT advisories, information about FIRST representatives, and other information related to computer security are available for anonymous FTP from info.cert.org. If you wish to send sensitive incident or vulnerability information to CERT staff by electronic mail, we strongly advise that the e-mail be encrypted. The CERT Coordination Center can support a shared DES key, PGP (public key available via anonymous FTP on info.cert.org), or PEM (contact CERT staff for details). Internet E-mail: cert@cert.org Telephone: 412-268-7090 (24-hour hotline) CERT personnel answer 8:30 a.m.-5:00 p.m. EST(GMT-5)/EDT(GMT-4), and are on call for emergencies during other hours. CERT Coordination Center Software Engineering Institute Carnegie Mellon University Pittsburgh, PA 15213-3890 USA *CERT is a service mark of Carnegie Mellon University.