From agent99@csd.sgi.com Fri Dec 3 16:20:29 1999 From: SGI Security Coordinator Resent-From: mea culpa To: agent99@sgi.com Resent-To: jericho@attrition.org Date: Tue, 30 Nov 1999 14:37:11 -0800 (PST) Subject: BIND Vulnerabilities [The following text is in the "iso-8859-1" character set] [Your display is set for the "US-ASCII" character set] [Some characters may be displayed incorrectly] DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE -----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 "CERTŪ 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 cse-security-alert@sgi.com. ------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 (204.94.209.1). 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 cse-security-alert@sgi.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 wiretap-request@sgi.com subscribe wiretap end ^d In the example above, 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 security-alert@sgi.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-----