[security bulletin] HPSBTU02095 SSRT051007 rev.3 - HP Tru64 UNIX Running DNS BIND4/BIND8 as Forwarders: Remote Unauthorized Privileged Access
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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
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System management and security procedures must be reviewed
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"HP is broadly distributing this Security Bulletin in order to
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