-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c00595837 Version: 3 HPSBTU02095 SSRT051007 rev.3 - HP Tru64 UNIX Running DNS BIND4/BIND8 as Forwarders: Remote Unauthorized Privileged Access NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2006-04-18 Last Updated: 2006-04-19 Potential Security Impact: Remote unauthorized privileged access Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY A potential vulnerability has been identified with the HP Tru64 UNIX operating system running DNS BIND4 or BIND8 when configured as forwarders. The vulnerability could be exploited remotely to gain unauthorized privileged access to the DNS clients. References: CVE-2006-0527 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. The following supported versions of HP Tru64 UNIX are affected: * HP Tru64 UNIX 5.1B-3 * HP Tru64 UNIX 5.1B-2/PK4 * HP Tru64 UNIX 5.1A PK6 * HP Tru64 UNIX 4.0G PK4 * HP Tru64 UNIX 4.0F PK8 BACKGROUND The Internet Software Consortium's (isc.org) Berkeley Internet Name Domain (BIND) is a popular DNS server used on many operating systems including Tru64 UNIX. - From the Internet Software Consortium's web site http://www.isc.org : BIND4/BIND8 Unsuitable for Forwarder Use If a nameserver -- any nameserver, whether BIND or otherwise -- is configured to use "forwarders", then none of the target forwarders can be running BIND4 or BIND8. Upgrade all nameservers used as "forwarders" to BIND9. There is a current, wide scale Kashpureff-style DNS cache corruption attack which depends on BIND4 and BIND8 as "forwarders" targets. Due to architectural limitations BIND4/BIND8 will never be suitable for use as a forwarder target. BIND9 should be used instead. RESOLUTION HP has released the following Early Release Patch kits (ERPs) publicly for use by any customer. The ERP kits use dupatch to install and will not install over any Customer Specific Patches (CSPs) that have file intersections with the ERP. Note: The ERP kits binaries are the same as Revision 2 of this bulletin except for the addition of nslookup and nslookup manpage which support internationalization (I18N). The ERP kits distribute the following items: * The BIND9 release * BIND9 manpages * /usr/bin/nslookup * nslookup manpage * Upgraded bindconfig application to support BIND9 (5.1B-3, 5.1B-2/PK4, and 5.1A PK6 only) HP Tru64 UNIX Version 5.1B-3 ERP Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do? patchid=T64KIT1000505-V51BB26-ES-20060406 Name: T64KIT1000505-V51BB26-ES-20060406 MD5 Checksum: 5298ff7f96d97339b13b0354705a3625 HP Tru64 UNIX Version 5.1B-2/PK4 ERP Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do? patchid=T64KIT1000504-V51BB25-ES-20060406 Name: T64KIT1000504-V51BB25-ES-20060406 MD5 Checksum: 185b66169f0d74a7ac5edea5bbecbf11 HP Tru64 UNIX Version 5.1A PK6 ERP Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do? patchid=T64KIT1000519-V51AB24-ES-20060410 Name: T64KIT1000519-V51AB24-ES-20060410 MD5 Checksum: 00a95acde76a408842f6c49f81d8d605 HP Tru64 UNIX Version 4.0G PK4 ERP Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do? patchid=T64KIT1000521-V40GB22-ES-20060410 Name: T64KIT1000521-V40GB22-ES-20060410 MD5 Checksum: ab3cfd38b91a884b02ee2f263b0dd5b0 HP Tru64 UNIX Version 4.0F PK8 ERP Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do? patchid=DUXKIT1000520-V40FB22-ES-20060410 Name: DUXKIT1000520-V40FB22-ES-20060410 MD5 Checksum: 2cf4adb87454f2c391afa126f0805fd0 HISTORY Version: 1 (rev.1) 25 January 2006 Initial release Version: 2 (rev.2) 6 February 2006 Added additional information Version: 3 (rev.3) 18 April 2006 Updated information, nslookup was added supporting internationalization (I18N) Support: For further information, contact normal HP Services support channel. Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert (at) hp (dot) com. [email concealed] It is strongly recommended that security related information being communicated to HP be encrypted using PGP, especially exploit information. To get the security-alert PGP key, please send an e-mail message as follows: To: security-alert (at) hp (dot) com [email concealed] Subject: get key Subscribe: To initiate a subscription to receive future HP Security Bulletins via Email: http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA& langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC On the web page: ITRC security bulletins and patch sign-up Under Step1: your ITRC security bulletins and patches - check ALL categories for which alerts are required and continue. Under Step2: your ITRC operating systems - verify your operating system selections are checked and save. To update an existing subscription: http://h30046.www3.hp.com/subSignIn.php Log in on the web page: Subscriber's choice for Business: sign-in. On the web page: Subscriber's Choice: your profile summary - use Edit Profile to update appropriate sections. To review previously published Security Bulletins visit: http://www.itrc.hp.com/service/cki/secBullArchive.do * The Software Product Category that this Security Bulletin relates to is represented by the 5th and 6th characters of the Bulletin number in the title: GN = HP General SW, MA = HP Management Agents, MI = Misc. 3rd party SW, MP = HP MPE/iX, NS = HP NonStop Servers, OV = HP OpenVMS, PI = HP Printing & Imaging, ST = HP Storage SW, TL = HP Trusted Linux, TU = HP Tru64 UNIX, UX = HP-UX, VV = HP Virtual Vault System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions. "HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important security information contained in this Bulletin. HP recommends that all users determine the applicability of this information to their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement." (c)Copyright 2006 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP nor its affiliates, subcontractors or suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. -----BEGIN PGP SIGNATURE----- Version: PGP 8.1 iQA/AwUBREdu/uAfOvwtKn1ZEQIsBgCgqNOEzf+PHKnpL1B15IYtOpo1BucAoPwZ vjC/1asnIYyZB9vckmKReMDA =3FN8 -----END PGP SIGNATURE-----