SecurityTracker: HP-UX Trusted Systems Grant Access to Remote Users

Hewlett-Packard Company
HP Software Security Response Team
VULNERABILITY SUMMARY:
A potential security vulnerability has been identified with HP-UX trusted systems
where the vulnerability may be exploited to allow remote unauthorized access.
REFERENCES:

None
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00, B.11.11, B.11.22, B.11.23 which have been converted to trusted
systems.
BACKGROUND:
For a PGP signed version of this Security Bulletin please write to
security-alert@hp.com.

AFFECTED VERSIONS

Note: To determine if a system has an affected version,
search the output of "swlist -a revision -l fileset"
for an affected fileset. Then determine if the
recommended patch or update is installed.

HP-UX B.11.00
=============
InternetSrvcs.INETSVCS-RUN
OS-Core.CORE-SHLIBS
action: install PHCO_29249 and PHNE_17030 or subsequent

HP-UX B.11.11
=============
OS-Core.CORE-SHLIBS
action: install PHCO_33215 or subsequent

HP-UX B.11.22
=============
OS-Core.CORE2-SHLIBS
action: disable remshd and avoid the telnet -t option

HP-UX B.11.23
=============
OS-Core.CORE2-SHLIBS
action: install PHCO_32926 or subsequent

END AFFECTED VERSIONS
RESOLUTION:
HP patch kits to resolve this potential vulnerability are available for
download from:

http://itrc.hp.com

For HP-UX B.11.00 - PHCO_29249 and PHNE_17030
For HP-UX B.11.11 - PHCO_33215
For HP-UX B.11.23 - PHCO_32926

For HP-UX B.11.22 the issue can be worked around by disabling remshd and avoiding the
use of the telnet -t option. To disable remshd, comment out all lines in
/etc/inetd.conf were remshd is mentioned. The telnetd line in /etc/inetd.conf
should be edited to remove the -t option if it is present. After making the changes
to inetd.conf run "/usr/sbin/inetd -c" or reboot the system.
MANUAL ACTIONS: Yes - NonUpdate
For HP-UX B.11.22, disable remshd and avoid the telnet -t option.

For HP-UX B.11.00, B.11.11, and B11.23, there are no manual actions.
BULLETIN REVISION HISTORY:
Revision 0: 25 May 2005
Initial release

HP-UX SPECIFIC SECURITY BULLETINS*: 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://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=B6834AA

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@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).

SUBSCRIBE: To initiate a subscription to receive future HP Security Bulletins via Email:
http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC
On the web page: ITRC security bulletins and patch sign-up
Under Step1: your IRTC security bulletins and patches
- check ALL categories for which alerts are required and continue.
Under Step2: your IRTC 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://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin

* The Software Product Category that this Security Bulletin relates to is represented
by the 5th and 6th characters of the Bulletin number:
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."

©Copyright 2005 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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