SSRT3622 rev.4 HP-UX Bind v920 Denial of Service (DoS)
From: Security Alert (secure_at_cup.hp.com)
Date: 10/27/04
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Date: Wed, 27 Oct 2004 11:44:48 GMT
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**REVISED 04**
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0310-290
Originally issued: 08 October 2003
Last revised: 25 October 2004
SSRT3622 rev.4 HP-UX Bind v920 Denial of Service (DoS)
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NOTICE: There are no restrictions for distribution of this
Bulletin provided that it remains complete and intact.
The information in the following Security Bulletin should be
acted upon as soon as possible. Hewlett-Packard Company will
not be liable for any consequences to any customer resulting
from customer's failure to fully implement instructions in this
Security Bulletin as soon as possible.
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PROBLEM: 1. Certain ASN.1 encodings that are rejected as invalid
by the parser can trigger a bug in the deallocation
of the corresponding data structure, corrupting the
stack. This can be used as a denial of service
attack. It is currently unknown whether this can be
exploited to run malicious code. This issue does not
affect OpenSSL 0.9.6.
More details are available at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545
2. Unusual ASN.1 tag values can cause an out of bounds
read under certain circumstances, resulting in a
denial of service vulnerability.
More details are available at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544
3. A malformed public key in a certificate will crash
the verify code if it is set to ignore public key
decoding errors. Exploitation of an affected
application would result in a denial of service
vulnerability.
4. Due to an error in the SSL/TLS protocol handling,
a server will parse a client certificate when one is
not specifically requested.
IMPACT: Potential Denial of Service
PLATFORM: HP9000 Servers running HP-UX releases B.11.00, B.11.11,
B.11.22, and B.11.23, only with the BINDv920 installed.
**REVISED 04**
SOLUTION: Until a product upgrade is available, download and
install the appropriate depot from the ftp site
(see below).
Bind9.2 for B.11.00 BINDv920 version 003
Bind9.2 for B.11.11 BINDv920 version 005
Bind9.2 patch for B.11.22 PHNE_29859.depot
--> Bind9.2 patch for B.11.23 PHNE_31726 or subsequent
**REVISED 04**
MANUAL ACTIONS: Yes - NonUpdate
for B.11.00 download web upgrade
for B.11.11 download web upgrade
for B.11.22 use the temporary depot
--> for B.11.23 no manual actions required
Install the product containing the fix.
AVAILABILITY: The depots or patch are available now, via ftp
(see below).
This bulletin will be updated when a product
upgrade is available.
CHANGE SUMMARY: Rev.01 added web upgrade for B.11.11
Rev.02 added B.11.23 depot
Rev.03 added B.11.11 web upgrade
Rev.04 added patch from B.11.23
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**REVISED 04**
A. Background
An SSL/TLS testing suite developed by the NISCC (National
Infrastructure Security Co-Ordination Centre in the UK) has
identified ASN.1 parsing vulnerabilities in OpenSSL.
AFFECTED VERSIONS
The following is a list by HP-UX revision of
affected filesets or patches and fix information.
To determine if a system has an affected version,
search the output of "swlist -a revision -l fileset"
for an affected fileset or patch, then determine if
a fixed revision or applicable patch is installed.
HP-UX B.11.00
=============
BINDv920.INETSVCS-BIND
action: install revision B.11.00.01.003 or subsequent
HP-UX B.11.11
=============
BINDv920.INETSVCS-BIND
action: install revision B.11.11.01.005 or subsequent
HP-UX B.11.22
=============
InternetSrvcs.INETSVCS2-RUN
action: install PHNE_29859.depot
HP-UX B.11.23
=============
InternetSrvcs.INETSVCS2-RUN
--> action: install PHNE_31726 or subsequent
END AFFECTED VERSIONS
**REVISED 04**
B. Recommended solution
Note: These fixes should be applied to all systems using
DNS, including those systems with client programs only.
-->For B.11.23, install PHNE_31726 or subsequent.
-->Note: It is not necessary to remove the temporary patch,
--> PHNE_30465, before installing PHNE_31726.
--> Although both PHNE_30465 and PHNE_31726 resolve the
--> vulnerability, PHNE_31726 is recommended, even if
--> PHNE_30465 is installed. PHNE_31726 is a general
--> release patch and PHNE_30465 is a temporary patch.
Notes on Bind Versions (B.11.00 and B.11.11)
=============================================
Bind is available on B.11.00 and B.11.11 as part of
the base operating system and as a web upgrade.
Both versions (base os and web upgrade) may be
installed on a system simultaneously. Only one
version can be active. The active version can
be changed via a script.
The base os versions are updated via patches. The
web upgrade versions are updated by installing a
later web upgrade. The web upgrade versions are
not patched, instead are simply newer versions.
If a web upgrade version is active it is not possible
to patch the base os version. It is necessary to
switch to the base os version with the following
command before applying the patch:
/usr/bin/enable_inet -r bind
If you are running a web upgrade version and do not
intend to re-enable the base os version, it is not
necessary to patch the base os version. However,
since the base os version can be re-enabled with
the script, you may want to patch the base os version
even though it is not active. Similarly, if you have
installed a web upgrade version and have switched
back to the base os version, you may want to update
to the latest web upgrade version or use swremove(1)
to remove the web upgrade version entirely.
Identifying the Active Version (B.11.00/B.11.11)
================================================
Execute the following command:
what /usr/sbin/named | grep named
The bind version will be on the named line.
For example:
named 9.2.0 Thu Jul 18 11:58:39 GMT 2002
Identifying the Web Upgrade Version (B.11.00/B.11.11)
=====================================================
If the file /usr/contrib/bind/usr/sbin/named exists,
execute the following:
what /usr/contrib/bind/usr/sbin/named | grep named
The bind version will be on the named line.
If the version is anything other than 9.2.0, this bulletin
does not apply to the system being examined.
Until a product upgrade is available, download and install
install the appropriate depot from the ftp site.
-->1a). For B.11.22, download PHNE_29859.depot.gz from
--> the following ftp site:
System: hprc.external.hp.com (192.170.19.51)
Login: bind920
Password: bind920
FTP Access: ftp://bind920:bind920@hprc.external.hp.com/
or: ftp://bind920:bind920@192.170.19.51/
or: ftp hprc.external.hp.com
Note: There is an ftp defect in IE5 that may result in
a browser hang. To work around this:
- Select Tools -> Internet Options -> Advanced
- Un-check the option:
[ ] Enable folder view for FTP sites
1b). For B.11.11 download BINDv920 version 005 from web
upgrade at: <http://software.hp.com>
1c). For B.11.00 download BINDv920 version 003 from web
upgrade at: <http://software.hp.com>
==================================================
--> 2. For B.11.22, copy PHNE_29859.depot.gz to a
protected directory and unpack it.
cksum:
1640049049 12927378 PHNE_29859.depot.gz
md5:
PHNE_29859.depot.gz
0B306B5E4353D157F0120B719D8D38D3
--> 3. For B.11.22, install PHNE_29859.depot using swinstall(1).
* The software product category that this Security Bulletin
relates to is represented by the 5th and 6th characters of the
Bulletin number: GN=General, MA=Management Agents,
MI=Misc. 3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers,
OV=HP OpenVMS, PI=HP Printing & Imaging, ST=HP Storage,
TU=HP Tru64 UNIX, TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault
SUPPORT: For further information, contact HP Services support
channel.
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HP-UX SPECIFIC SECURITY BULLETINS*:
The HP-UX Security Patch Matrix is available here:
http://itrc.hp.com/service/cki/docDisplay.do?
docId=hpuxSecurityMatrix
Or via anonymous ftp:
ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/
The HP-UX Security Patch Matrix, updated daily, categorizes
security patches by platform/OS release, and by Bulletin topic.
The Security Patch Check tool completely automates the process of
reviewing the Security Patch Matrix for HP-UX 11.XX Versions.
NOTE: Installing patches listed in the Security Patch Matrix will
completely implement the RESOLUTION in the Security Bulletin
_only_ if there are no MANUAL ACTIONS included.
The Security Patch Check tool can also verify that a Security
Bulletin RESOLUTION has been implemented on HP-UX 11.XX Versions
provided that no MANUAL ACTIONS were included. The Security Patch
Check tool cannot verify patches implemented via product upgrade.
For information on the Security Patch Check tool, see:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA
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 obtain the security-alert PGP key please send an
e-mail message to security-alert@hp.com with the Subject of
'get key' (no quotes).
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 2004 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.
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-- Yours truly, HP S/W Security Team WTEC Cupertino, California Return-Path: secure@cup.hp.com Reply-to: security-alert@hp.com
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