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[security bulletin] HPSBUX02203 SSRT071339 rev.1 - HP-UX Running Portable File System (PFS), Remote Increase in Privilege



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SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c00913684
Version: 1

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 
as possible.

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

VULNERABILITY SUMMARY
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.

References: None

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00 (obsolete), B.11.11 and B.11.23.

BACKGROUND

Note: HP-UX B.11.00 is obsolete as of January 1, 2007.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As of March 1, 2004 the Portable File System(PFS) is obsolete, and no longer 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 security-alert@xxxxxxx

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.

AFFECTED VERSIONS

HP-UX B.11.00
=============
OS-Core.CORE-KRN
ProgSupport.C-INC
OS-Core.CORE2-KRN
OS-Core.UX-CORE
action: install PHKL_28060, PHKL_26450, PHCO_26449 or subsequent, discontinue 
use of PFS.

HP-UX B.11.11
=============
OS-Core.CORE-KRN
ProgSupport.C-INC
OS-Core.CORE2-KRN
OS-Core.UX-CORE
action: PHKL_28025, PHKL_26269, PHCO_25841 or subsequent, discontinue use of 
PFS.

HP-UX B.11.23
=============
OS-Core.CORE-KRN
ProgSupport.C-INC
OS-Core.CORE2-KRN
OS-Core.UX-CORE
action: discontinue use of PFS.

END AFFECTED VERSIONS

RESOLUTION

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: 
http://itrc.hp.com

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

HISTORY
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: 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

Subscribe: To initiate a subscription to receive future HP Security Bulletins 
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On the web page: ITRC security bulletins and patch sign-up
Under Step1: your ITRC security bulletins and patches
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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 
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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.
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