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AUSCERT External Security Bulletin Redistribution
ESB-2005.0940 -- [HP-UX]
SSRT051074 Revised - HP-UX Running xterm Local Unauthorized Access
28 April 2006
AusCERT Security Bulletin Summary
Operating System: HP-UX B.11.00
Impact: Root Compromise
Access: Existing Account
Revision History: April 28 2006: HP has updated patch availability
November 24 2005: Initial Release
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c00555516
HPSBUX02075 SSRT051074 rev.4 - HP-UX Running xterm Local
NOTICE: The information in this Security Bulletin should be acted
upon as soon as possible.
Release Date: 2005-11-11
Last Updated: 2006-04-25
Potential Security Impact: Local unauthorized access
Source: Hewlett-Packard Company,
HP Software Security Response Team
A potential security vulnerability has been identified with HP-UX
running xterm. The vulnerability could be exploited by a local
user to gain unauthorized access.
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00, B.11.11, B.11.23.
To determine if an HP-UX 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.
action: remove PHSS_32109 if installed
action: install PHSS_34102 or subsequent
- - ->action: install PHSS_34159 or subsequent
END AFFECTED VERSIONS
->For HP-UX B.11.11 and B.11.23
HP has provided the following patches to resolve the issue for
B.11.11 and B.11.23:
B.11.11 - PHSS_34102 or subsequent
->B.11.23 - PHSS_34159 or subsequent
The patches can be downloaded from http://itrc.hp.com
->For HP-UX B.11.00
To resolve the issue avoid using the potentially vulnerable
versions of /usr/bin/X11/xterm. The following are three methods to
replace the potentially vulnerable xterm.
1. If the patch listed in the Background section (above) is
installed, remove the patch from the B.11.00 system.
The patch listed is the only B.11.00 patch containing the
potentially vulnerable xterm.
2. Use /usr/contrib/bin/X11R5/xterm.
cp /usr/bin/X11/xterm /usr/bin/X11/xterm.nosuid
chmod 555 /usr/bin/X11/xterm.nosuid
cp /usr/contrib/bin/X11R5/xterm /usr/bin/X11/xterm
3. Use an X11R6 xterm available as a binary file.
The binary file is an X11R6 replacement for the potentially
vulnerable version of xterm, and it contains the same defect
Customers who do not require the latest xterm may prefer to remove
the patch listed above instead. Manual action is required to
install the xterm binary file.
->For a copy of the B.11.00 xterm binary file please write to
MANUAL ACTIONS: Yes - NonUpdate
- - ->For HP-UX B.11.00
Remove the B.11.00 patch listed in the Background section,
or install the xterm binary file.
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:
Version:1 (rev.1) - 13 November 2005 Initial release
Version:2 (rev.2) - 22 November 2005 Preliminary xterm files are
Version:3 (rev.3) - 5 January 2006 B.11.11 patch is available.
Version:4 (rev.4) - 25 April 2006 B.11.23 patch is available.
Support: For further information, contact normal HP Services
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
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- check ALL categories for which alerts are required and
Under Step2: your ITRC operating systems
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To review previously published Security Bulletins visit:
* 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
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