Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-1999.181 -- SGI Security Advisory 19991108 BIND Vulnerabilities 01 December 1999 =========================================================================== Silicon Graphics Inc. has released the following advisory concerning multiple BIND vulnerabilities as referenced in CERT Advisory CERT CA-99-14 and AusCERT External Security Bulletin ESB-1999.170. Remote users may execute arbitrary code with the privilege of the named daemon or impair normal operation of the daemon on systems with vulnerable versions of BIND. The vulnerability for SGI operating systems: IRIX, UNICOS and SGI Linux depends on which BIND distribution version was installed. A table of vulnerabilities and SGI BIND versions may be found in the Advisory included below. Under certain circumstances these vulnerabilities may allow remote users to gain root access or to perform Denial of Service (DoS) attacks against vulnerable systems. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SGI Security Advisory Title: BIND Vulnerabilities Title: CERT CA-99-14 Number: 19991101-01-I Date: November 30, 1999 ______________________________________________________________________________ SGI provides this information freely to the SGI user community for its consideration, interpretation, implementation and use. SGI recommends that this information be acted upon as soon as possible. SGI provides the information in this Security Advisory on an "AS-IS" basis only, and disclaims all warranties with respect thereto, express, implied or otherwise, including, without limitation, any warranty of merchantability or fitness for a particular purpose. In no event shall SGI be liable for any loss of profits, loss of business, loss of data or for any indirect, special, exemplary, incidental or consequential damages of any kind arising from your use of, failure to use or improper use of any of the instructions or information in this Security Advisory. ______________________________________________________________________________ As a followup to the CERT(sm) Advisory CA-99-14 "CERT® Advisory CA-99-14 Multiple Vulnerabilities in BIND", SGI has investigated and provides the following information. - - ----------------------- - - --- Issue Specifics --- - - ----------------------- The BIND distribution provides Internet domain name service known as DNS. ISC and CERT have reported several vulnerabilities discovered in certain versions of BIND distributions. These vulnerabilities can be used to perform denial of service attacks and/or to obtain privileged access remotely. SGI has investigated the issue and provides the following information for customer interpretation and possible action. - - -------------- - - --- Impact --- - - -------------- SGI distributes BIND for all SGI operating systems: IRIX, UNICOS and SGI Linux. Vulnerability exposure depends on which BIND distribution version was installed. A table of vulnerabilities and BIND versions can be found on: http://www.isc.org/products/BIND/bind-security-19991108.html SGI distributes BIND 4.9.7 on IRIX as eoe.sw.named which is not loaded by default on IRIX systems. The named(1M) man page incorrectly states "This version is based on the BIND 4.9.4 patchlevel 1 release from Paul Vixie." This version of BIND can lead to a denial of service. SGI distributes BIND 8.2.1 on http://freeware.sgi.com/ for IRIX. This version of BIND can lead to a denial of service and remote access. SGI distributes BIND 4.9.3 on UNICOS on Cray systems. This version of BIND can lead to a denial of service. SGI distributes BIND 8.2 on SGI Linux 1.0/1.1 which is based on RedHat 6.0. This version of BIND can lead to a denial of service and remote access. These vulnerabilities were reported by Internet Software Consortium (ISC): http://www.isc.org/products/BIND/bind-security-19991108.html These vulnerabilities were also reported by CERT(sm) in Advisory CA-99-14: http://www.cert.org/advisories/CA-99-14-bind.html These vulnerabilities have been publicly discussed in public Usenet newsgroups and Internet mailing lists. - - -------------------------- - - --- Temporary Solution --- - - -------------------------- Unfortunately, there are no immediate or temporary workarounds for this issue. This issue can only be addressed with the installation of a updated version of the BIND 8.2.2-P5 distribution. - - ---------------- - - --- Solution --- - - ---------------- No SGI patches are currently available for the various SGI BIND distributions. Unsupported by SGI, BIND 8.2.2-P5 fixes for these vulnerabilities can be found on: http://www.isc.org/products/BIND/bind-security-19991108.html - - ----------------------- - - --- Acknowledgments --- - - ----------------------- SGI wishes to thank the Internet Software Consortium and the CERT Coordination Center for their assistance in this matter. - - ----------------------------------------- - - --- SGI Security Information/Contacts --- - - ----------------------------------------- If there are questions about this document, email can be sent to firstname.lastname@example.org. ------oOo------ SGI provides security information and patches for use by the entire SGI community. This information is freely available to any person needing the information and is available via anonymous FTP and the Web. The primary SGI anonymous FTP site for security information and patches is sgigate.sgi.com (220.127.116.11). Security information and patches are located under the directories ~ftp/security and ~ftp/patches, respectively. The SGI Security Headquarters Web page is accessible at the URL http://www.sgi.com/Support/security/security.html. For issues with the patches on the FTP sites, email can be sent to email@example.com. For assistance obtaining or working with security patches, please contact your SGI support provider. ------oOo------ SGI provides a free security mailing list service called wiretap and encourages interested parties to self-subscribe to receive (via email) all SGI Security Advisories when they are released. Subscribing to the mailing list can be done via the Web (http://www.sgi.com/Support/security/wiretap.html) or by sending email to SGI as outlined below. % mail firstname.lastname@example.org subscribe wiretap <YourEmailAddress> end ^d In the example above, <YourEmailAddress> is the email address that you wish the mailing list information sent to. The word end must be on a separate line to indicate the end of the body of the message. The control-d (^d) is used to indicate to the mail program that you are finished composing the mail message. ------oOo------ SGI provides a comprehensive customer World Wide Web site. This site is located at http://www.sgi.com/Support/security/security.html. ------oOo------ For reporting *NEW* SGI security issues, email can be sent to email@example.com or contact your SGI support provider. A support contract is not required for submitting a security report. ______________________________________________________________________________ This information is provided freely to all interested parties and may be redistributed provided that it is not altered in any way, SGI is appropriately credited and the document retains and includes its valid PGP signature. - -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBOERPUbQ4cFApAP75AQHIdwP8DH3kK+VbBWpuXJifpK0fXmyQGfLnlgwD 6nCfXVmc47S7fvqBm/L9LpTJR7E9oI29CVe2VHr2XBvZTq4qXDThtp0QowhAWMnB rluvPB37DQRtvsr33cdNM6mPbPhz421QA9MMGNdviWGl5JOXkwkhGvw9dUvRfA8m T2xKKCEd9AU= =568E - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. 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 7031 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 PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBOFpZ+yh9+71yA2DNAQH/aAP+Pk37/yfI42jId8Hd+baKhlmxf2MdUWGz opE/YICdXDESyovmhv8kcMfcsba/A5QlKnAWQVp7bP6+hH58p5gTepvmQDUlxMqq w+a7Pwsrlkm1yxsWvukCLr1R2dyAttDbqpUyiHnCLc/MNg4RfOgB5+1sq/elbXg1 4ymDar0Cxao= =xvmG -----END PGP SIGNATURE-----