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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-97.134 -- Sun Security Bulletin #00155 nis_cachemgr 29 October 1997 =========================================================================== Sun Microsystems, Inc. has released the following advisory concerning a vulnerability in nis_cachemgr. This vulnerability may allow attackers to add bogus directory objects to the global shared cache, in effect specifying rogue NIS+ servers that are under their control. The following security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write this document, AUSCERT has had no control over its content. As such, the decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. Contact information for Sun is included in the Security Bulletin below. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/information/advisories.html If you believe that your system has been compromised, contact AUSCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 4477 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AUSCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----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: <URL:ftp://sunsolve1.sun.com/pub/patches/patches.html> 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: <URL:ftp://sunsolve1.sun.com/pub/patches/patches.html> 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: <URL:http://sunsolve1.sun.com/sunsolve/secbulletins> C. Sun Security Coordination Team's PGP key is available via World Wide Web at: <URL:http://sunsolve1.sun.com/sunsolve/secbulletins/SunSCkey.txt> 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: email@example.com E. 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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----- - --------------------------END INCLUDED TEXT-------------------- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBNFb/Hih9+71yA2DNAQFP9gP9HjOd69/kBWCM13QJUzkB5frvtNlAdOLA aM599C3IgDPivoGGa53rifIHbHT9t6C+EqAFyQmpnDHkaEnmY/pBow8TfN7I6JZa qiL5zHYYtPcU0LS1kyKjPSkBhHqDXiDycYUIzXtOOw7ebT3k79Nt8wz4aI5EBl3C Um2YrEEdO8A= =hk5A -----END PGP SIGNATURE-----