-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c01123426 Version: 1 HPSBUX02251 SSRT071449 rev.1 - HP-UX Running BIND, Remote DNS Cache Poisoning NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2007-08-01 Last Updated: 2007-08-01 Potential Security Impact: Remote DNS cache poisoning Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY A potential vulnerability has been identified with HP-UX running BIND. The vulnerability could be exploited remotely to poison the DNS cache. References: CVE-2007-2926 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP-UX B.11.11, B.11.23, B.11.31 running BIND v9.2 or BIND v9.3 BACKGROUND To determine if a system has an affected version, search the output of "swlist -a revision -l fileset" for an affected fileset. Then determine if the recommended patch or update is installed. AFFECTED VERSIONS For BIND v9.2.0 HP-UX B.11.11 ============= BINDv920.INETSVCS-BIND action: install named binary file HP-UX B.11.23 ============= InternetSrvcs.INETSVCS2-RUN action: install named binary file For BIND v9.3.2 HP-UX B.11.11 ============= BindUpgrade.BIND-UPGRADE action: install named binary file HP-UX B.11.23 ============= BindUpgrade.BIND2-UPGRADE action: install named binary file HP-UX B.11.31 ============= NameService.BIND-RUN action: install named binary file END AFFECTED VERSIONS RESOLUTION Until patches or upgrades are released, HP has made binary files available to resolve the vulnerability: 1. Download the appropriate named file from this ftp site into a secure directory: ftp://ss071449:ss071449@hprc.external.hp.com/ 2. Unpack using gunzip and verify the cksum or md5sum: 572766271 2613248 named_9.2.0_11.11 3606788661 4750744 named_9.2.0_11.23IA 653361159 2330624 named_9.2.0_11.23PA 903130469 2330624 named_9.3.0_11.11 203348338 5451512 named_9.3.2_11.23IA 3758797943 2899968 named_9.3.2_11.23PA 1406468692 4225172 named_9.3.2_11.31IA 400611368 2269184 named_9.3.2_11.31PA MD5 (named_9.2.0_11.11) = 5ce61d99d513cbdb122865de9f7fb95e MD5 (named_9.2.0_11.23IA) = e87a2f8f3daa157a5f6a7ac5153c38b0 MD5 (named_9.2.0_11.23PA) = a92ffa5abd630d25971e8be3eeacd3b1 MD5 (named_9.3.0_11.11) = ffc69fa254863ad5cbfc8fc7021ab3c9 MD5 (named_9.3.2_11.23IA) = 22ebde858def1ebafcfaef9b98cebe28 MD5 (named_9.3.2_11.23PA) = 20c21b8fd19bc11a0020118c32172b71 MD5 (named_9.3.2_11.31IA) = 9bd93b513fde895ebc32602824db3341 MD5 (named_9.3.2_11.31PA) = 81041c98b5699d90e0d90cca14f90d18 3. Stop the DNS server: If named is normally started and stopped during system reboot, use this command: /sbin/init.d/named stop If rndc is in use, from the managing server issue ths command: rndc stop If not using rndc enter this command as root on the system running named: sig_named kill 4. Confirm that named is no longer running: ps -ef | grep named Ignore any lines containing 'grep named'. 5. Replace named with the appropriate downloaded file. Confirm that the downloaded file has permissions/ower/group of '544 bin bin'. Set the ownership and permissions if necessary. cp /usr/sbin/named 6. Restart named If named is normally started during the system reboot: /sbin/init.d/named start Otherwise, restart named using procedures established for the system. MANUAL ACTIONS: Yes - NonUpdate Install named file. PRODUCT SPECIFIC INFORMATION HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application that replaces HP-UX Security Patch Check. It analyzes all HP-issued Security Bulletins and lists recommended actions that may apply to a specific HP-UX system. It can also download patches and create a depot automatically. For more information see: https://www.hp.com/go/swa HISTORY Version: 1 (rev.1) - 1 August 2007 Initial release Third Party Security Patches: Third party security patches which are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy. 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@hp.com 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@hp.com 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 VirtualVault 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." ©Copyright 2007 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 or 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/AwUBRrIL5+AfOvwtKn1ZEQL3CACeNi7I3nI1tNmyuZIiWHLTfFU03DIAoPTt uZ38sNY2cSHUKwyDSMehA5BI =XVCE -----END PGP SIGNATURE-----