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TUCoPS :: HP/UX :: tb10378.htm

HP-UX Running Portable File System (PFS), Remote Increase in Privilege



HPSBUX02203 SSRT071339 rev.1 - HP-UX Running Portable File System (PFS), Remote Increase in Privilege
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Note: HP-UX B.11.00 is obsolete as of January 1, 2007.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As of March 1, 2004 the Portable File System(PFS) is obsolete, and no longer supported on any HP-UX release.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@hp.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.

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@hp.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:
To: security-alert@hp.com 
  Subject: get key

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 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.

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://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."

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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