-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
ESB-2007.0326 -- [Tru64]
HP Tru64 UNIX Running Secure Shell (SSH), Remote Unauthori
zed Identification of Valid Users
18 May 2007
AusCERT Security Bulletin Summary
Operating System: HP Tru64
Impact: Inappropriate Access
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c01007552
HPSBTU02209 SSRT071323 rev.1 - HP Tru64 UNIX Running Secure Shell (SSH), Remote Unauthorized Identification of Valid Users
NOTICE: The information in this Security Bulletin should be acted upon as soon as possible.
Release Date: 2007-05-09
Last Updated: 2007-05-09
Potential Security Impact: Remote, unauthorized identification of valid Users
Source: Hewlett-Packard Company, HP Software Security Response Team
A potential security vulnerability has been identified with HP Tru64 UNIX running Secure Shell (SSH).
The vulnerability could be exploited remotely by an unauthorized user to identify valid users.
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
The following supported software versions are affected:
HP Tru64 UNIX v5.1B-4
HP Tru64 UNIX v5.1B-3
For a PGP signed version of this security bulletin please write to: email@example.com
The Hewlett-Packard Company thanks Andrea Purificato for reporting this vulnerability to firstname.lastname@example.org.
Until updates are available in mainstream release patch kits, HP is releasing the following Early Release Patch (ERP) kits publicly for use by any customer.
The ERP kits use dupatch to install and will not install over any installed Customer Specific Patches (CSPs) that have file intersections with the ERPs. Contact your service provider for assistance if the installation of the ERPs is blocked by any of your installed CSPs.
The resolutions contained in the ERP kits are targeted for availability in the following mainstream patch kit:
HP Tru64 UNIX Version v5.1B-5
Special Instructions for the Customer:
This patch adds a new keyword to the sshd2_config configuration file for the sshd2 daemon. The new keyword, AuthInteractiveFailureRandomTimeout , adds a random delay to the existing AuthInteractiveFailureTimeout delay. See the sshd2_config man page for information on AuthInteractiveFailureTimeout.
The AuthInteractiveFailureRandomTimeout keyword can take a value from 0 to 100 (in seconds). The default is 2. To disable AuthInteractiveFailureRandomTimeout, specify a value of 0. When a non-zero value is specified for this keyword, a random number of milliseconds up to the number of seconds specified multiplied by 1000 is added to the server delay specified by AuthInteractiveFailureTimeout.
HP Tru64 UNIX Version v5.1B-4
Prerequisite: HP Tru64 UNIX v5.1B-4 PK6 (BL27)
Kit Name: T64KIT1001208-V51BB26-ES-20070427
Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001208-V51BB26-ES-20070427
HP Tru64 UNIX Version v5.1B-3
Prerequisite: HP Tru64 UNIX v5.1B-3 PK5 (BL26)
Kit Name: T64KIT1001205-V51BB27-ES-20070427
Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1001205-V51BB27-ES-20070427
MD5 checksums are available from the ITRC patch database main page.
PRODUCT SPECIFIC INFORMATION
Version:1 (rev.1) - 9 May 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: email@example.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:
Subject: get key
Subscribe: To initiate a subscription to receive future HP Security Bulletins via Email:
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
- -----END PGP SIGNATURE-----
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to firstname.lastname@example.org
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: email@example.com
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----