[security bulletin] SSRT051007 rev.2 - HP Tru64 UNIX Running DNS BIND4/BIND8 with Forwarders: Remote Unauthorized Privileged Access
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c00595837
Version: 2
HPSBTU02095 SSRT051007 rev.2 - HP Tru64 UNIX Running DNS
BIND4/BIND8 with 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: 2006-02-08
Potential Security Impact: Remote unauthorized privileged access
Source: Hewlett-Packard Company,
HP Software Security Response Team
VULNERABILITY SUMMARY
A potential vulnerability has been identified on the HP Tru64 UNIX
operating system running DNS BIND4 or BIND8 when used by DNS
Forwarders. The vulnerability could be exploited remotely to gain
unauthorized privileged access to the DNS clients.
References: http://isc.org/sw/bind/bind8.php
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.
The ERP kits distribute the following items:
* The BIND9 release
* BIND9 manpages
* 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=T64KIT1000207-V51BB26-ES-20051212
Name: T64KIT1000207-V51BB26-ES-20051212
MD5 Checksum: b4cc5c0dd9dbec8d644444e8036f44dc
HP Tru64 UNIX Version 5.1B-2/PK4 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?
patchid=T64KIT1000208-V51BB25-ES-20051213
Name: T64KIT1000208-V51BB25-ES-20051213
MD5 Checksum: 6b388a0067f3e26a3a161edf28506769
HP Tru64 UNIX Version 5.1A PK6 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?
patchid=T64KIT1000209-V51AB24-ES-20051213
Name: T64KIT1000209-V51AB24-ES-20051213
MD5 Checksum: 02b95600c15c35ad2991ec247c3cd9fb
HP Tru64 UNIX Version 4.0G PK4 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?
patchid=T64KIT1000211-V40GB22-ES-20051210
Name: T64KIT1000211-V40GB22-ES-20051210
MD5 Checksum: 6f44f115dc564d67c073fa56989634c1
HP Tru64 UNIX Version 4.0F PK8 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?
patchid=DUXKIT1000210-V40FB22-ES-20051210
Name: DUXKIT1000210-V40FB22-ES-20051210
MD5 Checksum: db6ce0a77906512ba45bc10cc8c518a7
UPDATE HISTORY
Version: 1 (rev.1) 25 January 2006 Initial release
Version: 2 (rev.2) 6 February 2006 Added additional information
Support: For further information, contact normal HP Services
support channel.
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