[HP-UX] Schwachstelle im HP NonStop Server - HPSBNS02166 - SSRT061255

[win-sec-ssc@xxxxxxxxxxx]

-----BEGIN PGP SIGNED MESSAGE-----

Liebe Kolleginnen und Kollegen,

soeben erreichte uns das nachfolgende Bulletin der HP SupportLine. Wir
geben diese Informationen unveraendert an Sie weiter.

  Schwachstelle bei Auswertung von Verzeichnis ACLs

  Im HP NonStop Server mit G06.29 Software existiert eine Schwachstelle
  bei der Auswertung von Zugriffsbeschraenkungen auf OSS-Verzeichnisse,
  falls keine zusaetzliche ACL fuer das Verzeichnis angegeben wurde. Ein
  lokaler Angreifer kann diese Schwachstelle unter Umstaenden ausnutzen,
  um unberechtigten Zugriff auf die Inhalte der betroffenen
  Verzeichnisse zu erhalten.

Betroffen sind die folgenden Software Pakete und Plattformen:

  HP NonStop Server vor G06.29.02

  NonStop Operating System 

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

Hersteller Advisory:
  http://www5.itrc.hp.com/service/cki/docDisplay.do?docId=c00795238


(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.

Mit freundlichen Gruessen,
                Klaus Moeller, DFN-CERT Services GmbH


- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c00795238
Version: 1

HPSBNS02166 SSRT061255 rev.1 - HP NonStop Server running G06.29, Local
Unauthorized Access

NOTICE: The information in this Security Bulletin should be acted upon
as soon as possible.

Release Date: 2006-10-26
Last Updated: 2006-10-26

Potential Security Impact: Local unauthorized access

Source: Hewlett-Packard Company, HP Software Security Response Team

VULNERABILITY SUMMARY
A potential security vulnerability has been identified with HP NonStop
Server running G06.29. The T6533G06 version of Standard Security product
performs an incorrect evaluation of the access permissions on OSS
directories which may result in local unauthorized access.

References: HOTSTUFF HS02932 T6533G06 STANDARD SECURITY SUPPORT NOTE
S06105

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP NonStop Server running G06.29

BACKGROUND

In HP NonStop Server running G06.29, the permissions on directories are
evaluated incorrectly, if no optional access control list (ACL) entry is
assigned. This can pose a security vulnerability on OSS directories.
RESOLUTION

The resolution for this issue is provided in SPR (Software Product
Revision) T6533G06^ABK. This SPR is included in the G06.29.02 release,
which replaces the G06.29 release.

Alternatively, HP has provided the following workaround:

This workaround applies only to Version 3 filesets.

The following SCF command can be used to identify the version of the
fileset:

SCF DIAGNOSE FILESET $ZPMON.<fileset>, STATUS

Version 2 filesets first need to be backed up and then upgraded to
Version 3 filesets. Use this SCF command:

SCF DIAGNOSE FILESET $ZPMON.<fileset>, UPGRADE

To insure that directory permissions are made explicit, if a directory
does not yet have an ACL associated with it, assign one with appropriate
security. To make sure directories or files that are created subsequent
to implementing this workaround are not vulnerable to the same problem,
assign at least one default ACL entry to the existing directories.

This OSS command assigns a optional ACL entry with a benign default to
all directories in the specified directory tree (for example, use the
fileset mountpoint directory), such that all subsequently created
directories in that directory tree automatically also have the optional
ACL entry assigned to them:

find <directory> -type d -print | xargs -n1 setacl -m
d:u:SUPER.SUPER:r--

If all of the started filesets on the system are Version 3 filesets, use
this OSS command to assign the optional ACL entry to all directories:

find / -W NOG -W NOE -type d -print | xargs -n1 setacl -m
d:u:SUPER.SUPER:r--

PRODUCT SPECIFIC INFORMATION

HISTORY
Version:1 (rev.1) - 26 October 2006 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@xxxxxxx  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 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 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
respective owners.

- -----BEGIN PGP SIGNATURE-----
Version: PGP 8.1

iQA/AwUBRUYIR+AfOvwtKn1ZEQLvowCg5ZdBRgO68VEqEpLHYwnsjY9PYfQAn0YD
oP/gmazNLr+ivfLTOud2wnEY
=+asG
- -----END PGP SIGNATURE-----
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (GNU/Linux)

iQEVAwUBRUiEc/BT2+ukQ5RFAQEhIAf8CrM2mDk0FSS5VS8qBMX6GUMfdeoW220d
jNys376JPrhJ/nbnAw+bRFUlRyeFf69/OLNj0+Kb1d/MrTl3nB+QbLIl8iqvYLVr
I9qjUfPp74jByZfbPoWRu/lgLl+ab6O1p9wNsq79LV9Gy7k4EIVN05h1BXqpnTkA
+k7ebrLEZOamI7XySGzDVEvpDN0W0V0SJqdn4//vNMF9jWQCqytyM1WnMrPbn034
zOkmaFIfAbRBYkcPo5VdE4OQ/X547eVANB2csl4nkgcZpwsDeasfGqiQMQBd8F32
ZDhFhrjxkSQ7YzBu65CErmYEKj9704aO4qr4blddkNWOwGHJf+XduA==
=tUXP
-----END PGP SIGNATURE-----