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- Security Alert
April 17, 2007, 6:56 pm
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c00913684
HPSBUX02203 SSRT071339 rev.1 - HP-UX Running Portable File System (PFS), Remote
Increase in Privilege
NOTICE: The information in this Security Bulletin should be acted upon as soon
Release Date: 2007-03-30
Last Updated: 2007-04-09
Potential Security Impact: Remote increase in privilege.
Source: Hewlett-Packard Company, HP Software Security Response Team
A potential security vulnerability has been identified in HP-UX with the
Portable File System (PFS). The vulnerability could be exploited remotely to
gain an increase in privilege.
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00 (obsolete), B.11.11 and B.11.23.
Note: HP-UX B.11.00 is obsolete as of January 1, 2007. It is discussed in this
Security Bulletin because the patches cited in the Resolution section were
available before January 1, 2007.
As of March 1, 2004 the Portable File System(PFS) is obsolete, and no longer
supported on any HP-UX release. PFS is supplied, but no longer supported on
HP-UX B.11.00, B.11.11, and B.11.23.
PFS was originally adopted by HP to provide accessibility to Rock Ridge
Interchange file system format on CD-ROM file systems. The equivalent
functionality is now provided by HP via the HP-UX CDFS file system type and
HP-UX's standard file systems commands.
The Hewlett-Packard Company thanks iDefense Labs http://www.idefense.com for
reporting this vulnerability to email@example.com.
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.
action: install PHKL_28060, PHKL_26450, PHCO_26449 or subsequent, discontinue
use of PFS.
action: PHKL_28025, PHKL_26269, PHCO_25841 or subsequent, discontinue use of PFS.
action: discontinue use of PFS.
END AFFECTED VERSIONS
The resolution is to avoid the vulnerability by discontinuing the use of PFS.
For B.11.00 and B.11.11, the enhanced CDFS and mount/umount commands are
provided by the following patches. These patches are available on:
HP-UX B.11.00 - PHKL_28060, PHKL_26450, PHCO_26449 or subsequent
HP-UX B.11.11 - PHKL_28025, PHKL_26269, PHCO_25841 or subsequent
With these patches, a mount command option (mount -F cdfs -o rr) must be used to
enable support of Rock Ridge at mount time.
For B.11.22, B.11.23 and later HP-UX releases, the Rock Ridge Interchange
support is provided with the core HP-UX OS and is the default (no patches or
special option required).
MANUAL ACTIONS: Yes - NonUpdate
Discontinue the use of PFS.
PRODUCT SPECIFIC INFORMATION
HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application
that replaces HP-UX Security Patch Check. It analyzes all HP-issued Security
Bulletins and lists recommended actions that may apply to a specific HP-UX
system. It can also download patches and create a depot automatically. For more
information see: https://www.hp.com/go/swa
Version: 1 (rev.1) - 09 April 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: firstname.lastname@example.org
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
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.
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On the web page: Subscriber's Choice: your profile summary - use Edit Profile to
update appropriate sections.
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 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
"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
ęCopyright 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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HP S/W Security Team
WTEC Cupertino, California