************************************************************************** Security Bulletin 9728 DISA Defense Communications System December 3, 1997 Published by: DISN Security Coordination Center (SCC@NIC.MIL) 1-(800) 365-3642 DEFENSE INFORMATION SYSTEM NETWORK SECURITY BULLETIN The DISN SECURITY BULLETIN is distributed by the DISN SCC (Security Coordination Center) under DISA contract as a means of communicating information on network and host security exposures, fixes, and concerns to security and management personnel at DISN facilities. Back issues may be obtained via FTP from NIC.MIL [207.132.116.5] using login= "anonymous" and password="guest". The bulletin pathname is scc/sec-yynn (where "yy" is the year the bulletin is issued and "nn" is a bulletin number, e.g. scc/sec-9705.txt). These are also available at our WWW site, http://nic.mil. ************************************************************************** + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + ! ! ! 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 DISN subscribers with useful security information. ! ! ! + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + ============================================================================= -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= CERT* Vendor-Initiated Bulletin VB-97.15 December 2, 1997 Topic: Vulnerability in nis_cachemgr Source: Sun Microsystems, Inc. To aid in the wide distribution of essential security information, the CERT Coordination Center is forwarding the following information from Sun Microsystems, Inc. Sun urges you to act on this information as soon as possible. Sun contact information is included in the forwarded text below; please contact them if you have any questions or need further information. Please note that since the original publication of this information by Sun Microsystems, some of the patches have been updated. Patch number 101973 has been updated to revision 33 (101973-33), and patch number 101974 has been updated to revision 33 (101974-33). MD5 checksums are shown below: Filename MD5 -------------- ------------------- 101973-33.tar.Z e10592771e9c8c8673277aa2d4637326 101974-33.tar.Z 1ad5395c8dec847f646337ebf087f2c0 These patches are also available at =======================FORWARDED TEXT STARTS HERE============================ - -----BEGIN PGP SIGNED MESSAGE----- ________________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00155 Date: October 28, 1997 Cross-Ref: Title: nis_cachemgr ________________________________________________________________________________ Permission is granted for the redistribution of this Bulletin, so long as the Bulletin is not edited and is attributed to Sun Microsystems. Portions may also be excerpted for re-use in other security advisories so long as proper attribution is included. Any other use of this information without the express written consent of Sun Microsystems is prohibited. Sun Microsystems expressly disclaims all liability for any misuse of this information by any third party. ________________________________________________________________________________ 1. Bulletins Topics Sun announces the release of patches for Solaris 2.5.1, 2.5, and 2.4 (SunOS 5.5.1, 5.5, and 5.4) which relate to a vulnerability in nis_cachemgr. Sun estimates that the release of a patch for Solaris 2.3 (SunOS 5.3) that relate to the same vulnerability will be available within 4 weeks of the date of this bulletin. Sun strongly recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.5.1, 5.5, and 5.4 which use NIS+. 2. Who is Affected Vulnerable: SunOS versions 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, 5.3 Not vulnerable: All other supported versions of SunOS. The vulnerability does not exist in Solaris 2.6. 3. Understanding the Vulnerability NIS+ clients run nis_cachemgr, a NIS+ utility that caches location information about NIS+ servers. This vulnerability, if exploited, allows attackers to add bogus directory objects to the global shared cache, in effect specifying rogue NIS+ servers that are under their control. 4. List of Patches The vulnerability in nis_cachemgr is fixed by the following patches: OS version Patch ID __________ ________ SunOS 5.5.1 103612-33 SunOS 5.5.1_x86 103613-32 SunOS 5.5 103187-29 SunOS 5.5_x86 103188-29 SunOS 5.4 101973-32 SunOS 5.4_x86 101974-32 SunOS 5.3 101318-89 (to be released in 4 weeks) 5. Checksum Table The checksum table below shows the BSD checksums (SunOS 5.x: /usr/ucb/sum), SVR4 checksums (SunOS 5.x: /usr/bin/sum), and the MD5 digital signatures for the above-mentioned patches that are available from: These checksums may not apply if you obtain patches from your answer centers. File Name BSD SVR4 MD5 _______________ __________ __________ ________________________________ 103612-33.tar.Z 42409 3248 60555 6495 63408A137DBE6BEEDAECFA49674F0E5A 103613-32.tar.Z 08972 2939 41390 5878 E613588ADA2845DA2CEDE801FE247ED2 103187-29.tar.Z 47938 3240 14585 6479 D681C0BB1C4267418AEB20F56DDE7FD3 103188-29.tar.Z 36871 2919 14150 5838 F7184B433BF9EDCBA99E81D2039F355A 101973-32.tar.Z 55144 956 44485 1911 A802DA901090B52A27BDC6AE0D386C13 101974-32.tar.Z 41770 826 48991 1652 91AB26639B6CB0902ADE354999751826 ______________________________________________________________________________ APPENDICES A. Patches listed in this bulletin are available to all Sun customers via World Wide Web at: Customers with Sun support contracts can also obtain patches from local Sun answer centers and SunSITEs worldwide. B. Sun security bulletins are available via World Wide Web at: C. Sun Security Coordination Team's PGP key is available via World Wide Web at: D. To report or inquire about a security problem with Sun software, contact one or more of the following: - Your local Sun answer centers - Your representative computer security response team, such as CERT - Sun Security Coordination Team. Send email to: security-alert@sun.com E. To receive information or subscribe to our CWS (Customer Warning System) mailing list, send email to: security-alert@sun.com with a subject line (not body) containing one of the following commands: Command Information Returned/Action Taken _______ _________________________________ help An explanation of how to get information key Sun Security Coordination Team's PGP key list A list of current security topics query [topic] The email is treated as an inquiry and is forwarded to the Security Coordination Team report [topic] The email is treated as a security report and is forwarded to the Security Coordinaton Team. 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To subscribe, supply the following in the subject line (not body): subscribe cws your-email-address Note that your-email-address should be substituted by your email address. unsubscribe Sender is removed from the CWS mailing list. ________________________________________________________________________________ - -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNFVP3LdzzzOFBFjJAQEuFQP+PDs4UVjW1oNE01r+MxGa/jcytvJTukNw 34tZVXie5JEqEDqsFfhnagYP8oyE4dgE/GDBboF9xyKI6Go0D/ehFy1QyEh2plkR 5TzSTxnsK1rOHz8tSVKMYXM5t8xCSKClAuhE5ROT7OOsC2idPHf40ztsRIGSXxVE jvOcBNmF0ww= =EXLm - -----END PGP SIGNATURE----- ========================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 cert@cert.org 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. 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This file: ftp://ftp.cert.org/pub/cert_bulletins/VB-97.15.nis_cachemgr -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNIQoQXVP+x0t4w7BAQGWUwP+LlCm50PwpDmqVnK6vQj1uFv7wiAzKOCa 3w5KJY5qQiVBvqlFhbTEypdQDMl+g6zbMqLsWA6EZdlFWosWwM6EJsNfQ3y7Xcis j9TD0N7uEi8CL8Au3YaGMyziScnWQOZ9H4Hm5Qt1AlZvde/ugnk6eg3Jbwmfbd0U KofgxrC2ols= =2o/g -----END PGP SIGNATURE----- **************************************************************************** * * * The point of contact for NIPRNET security-related incidents is the * * ASSIST: * * * * E-mail address: ASSIST@ASSIST.MIL * * * * Telephone: 1-(800)-357-4231 (24 hours/day) * * * * You may also contact the Security Coordination Center (SCC) at the * * NIC: * * * * E-mail address: SCC@NIC.MIL * * * * Telephone: 1-(800)-365-3642 * * * * NIC Help Desk personnel are available from 7:00 a.m.-7:00 p.m. EST, * * Monday through Friday except on federal holidays. * * * **************************************************************************** PLEASE NOTE: Some users outside of the DOD computing communities may receive DISN Security Bulletins. 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