[security bulletin] HPSBTU02209 SSRT071323 rev.1 - HP Tru64 UNIX Running Secure Shell (SSH), Remote Unauthorized Identification of Valid Users
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c01007552
Version: 1
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
VULNERABILITY SUMMARY
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.
References: NONE
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
BACKGROUND
For a PGP signed version of this security bulletin please write to:
security-alert@xxxxxx
The Hewlett-Packard Company thanks Andrea Purificato for reporting this
vulnerability to security-alert@xxxxxxx
RESOLUTION
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
HISTORY
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: security-alert@xxxxxx
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@xxxxxx
Subject: get key
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To review previously published Security Bulletins visit:
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* 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.
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