The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
High
PR
The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
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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:
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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
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- 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.
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