-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c00599840 Version: 2 HPSBUX02097 SSRT051045 rev.2 - HP-UX 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: 2006-02-06 Last Updated: 2006-02-14 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-UX operating system running DNS BIND4 or BIND8 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. Servers running HP-UX releases B.11.00, B.11.11 running BIND4 or BIND8. BACKGROUND Internet Software Consortium's Berkeley Internet Name Domain (BIND) is a popular DNS server used on many operating systems including HP-UX. - From the Internet Software Consortium's website 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. To determine if a system has an affected version, search the output of "swlist -a revision -l fileset" for one of the filesets listed below. For affected systems verify that the recommended action has been taken. AFFECTED VERSIONS HP-UX B.11.00 ============= bind.INETSVCS-RUN upgrade_bind812.INETSVCS-RUN InternetSrvcs.INETSVCS-RUN BINDv812.INETSVCS-BIND action: if running named, use only BIND9 HP-UX B.11.11 ============= bind.INETSVCS-RUN InternetSrvcs.INETSVCS-RUN action: if running named, use only BIND9 END AFFECTED VERSIONS RESOLUTION HP has made the following available to resolve this issue. HP-UX B.11.00 BIND 9.2.0 B.11.00.01.004 or subsequent available from http://software.hp.com HP-UX B.11.11 BIND 9.2.0 B.11.11.01.006 or subsequent available from http://software.hp.com MANUAL ACTIONS: Yes - NonUpdate HP-UX B.11.00 and B.11.11 - Install BIND9.2.0 or subsequent PRODUCT SPECIFIC INFORMATION HP-UX Security Patch Check: Security Patch Check revision B.02.00 analyzes all HP-issued Security Bulletins to provide a subset of recommended actions that potentially affect a specific HP-UX system. For more information: http://software.hp.com/portal/swdepot/displayProductInfo.do? productNumber=B6834AA HISTORY: Version:1 (rev.1) 10 February 2006 Initial release Version:2 (rev.2) 14 February 2006 Change format of Affected Versions 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/AwUBQ/MozOAfOvwtKn1ZEQKd5gCg7jxiIUHaxv6p6YrXW1NrU38oSmEAnies C9ZgK0BfMi2Aje6SSRzwmMD8 =Aqw2 -----END PGP SIGNATURE-----