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ESB-2016.0572 - [Linux] HP Thin ClientS with ThinPro OS: Root compromise - Existing account

Date: 03 March 2016
References: ESB-2016.0137  ESB-2016.0178  ESB-2016.0273  ASB-2016.0017  ASB-2016.0023.2  

Click here for printable version
Click here for PGP verifiable version
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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0572
        HPSBHF03436 rev.1 - HP Thin Client with ThinPro OS, running
                     Linux, Local Elevated Privileges
                               3 March 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           HP Thin ClientS with ThinPro OS
Publisher:         Hewlett-Packard
Operating System:  Linux variants
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-0728  

Reference:         ASB-2016.0017
                   ESB-2016.0273
                   ESB-2016.0178
                   ESB-2016.0137

Original Bulletin: 
   https://h20565.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c05018265

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Note: the current version of the following document is available here:
https://h20565.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c05018265

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c05018265
Version: 1

HPSBHF03436 rev.1 - HP Thin Client with ThinPro OS, running Linux, Local
Elevated Privileges

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

Release Date: 2016-02-26
Last Updated: 2016-02-26

Potential Security Impact: Elevated Privileges

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

VULNERABILITY SUMMARY

A potential security vulnerability has been identified with certain HP Thin
Clients running ThinPro OS. The vulnerability could be exploited exploited
locally resulting in elevated privileges.

References:

  * PSRT110023
  * CVE-2016-0728

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

  * HP ThinPro 4.4

  * HP ThinPro 5.0

  * HP ThinPro 5.1

  * HP ThinPro 5.2

  * HP ThinPro 5.2.1

BACKGROUND

For a PGP signed version of this security bulletin please write to:
security-alert@hp.com

CVSS 2.0 Base Metrics
================================================================================
Reference                      Base Vector                   Base Score
CVE-2016-0728        (AV:L/AC:L/Au:N/C:C/I:C/A:C)               7.2
================================================================================
Information on CVSS is documented in HP Customer Notice: HPSN2008002.

RESOLUTION

HP has released the following software updates to resolve the vulnerability.
Patches for the affected version of HP ThinPro can be found through the links
below:

  * HP ThinPro 5.2.1 http://ftp.hp.com/pub/tcdebian/updates/5.2.1/service_packs
    /CVE-2016-0728-all-5.2.1-x86-SQ.xar

  * HP ThinPro 5.2 http://ftp.hp.com/pub/tcdebian/updates/5.2/service_packs/
    CVE-2016-0728-all-5.2-x86-SQ.xar

  * HP ThinPro 5.1 http://ftp.hp.com/pub/tcdebian/updates/5.1/service_packs/
    CVE-2016-0728-all-5.0-5.1-x86-SQ.xar

  * HP ThinPro 5.0 http://ftp.hp.com/pub/tcdebian/updates/5.0/service_packs/
    CVE-2016-0728-all-5.0-5.1-x86-SQ.xar

  * HP ThinPro 4.4 http://ftp.hp.com/pub/tcdebian/updates/4.4/service_packs/
    CVE-2016-0728-all-4.4-x86-SQ.xar

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."

REVISION HISTORY

Version:1 (rev.1)  10 February 2016 Initial release

Third Party Security Patches: Third party security patches that are to be
installed on systems running HP software products should be applied in
accordance with the customer's patch management policy.

Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HP Services support channel. For other issues about
the content of this Security Bulletin, send email to hpsecurityalert@hp.com

Report: To report a potential security vulnerability with any HP supported
product, send email to: hpsecurityalert@hp.com

Subscribe: To initiate a subscription to receive future HP Security Bulletin
alerts via Email: http://support.hp.com/us/en/subscribe/

Security Bulletin Archive: A list of recently released Security Bulletins is
available here: https://h20564.www2.hp.com/portal/site/hpsc/public/kb/
secBullArchive

Software Product Category: The Software Product Category is represented in the
title by the two characters following HPSB.

PI = HP Printing and Imaging
HF = HP Hardware and Firmware
ST = HP Storage Software
GN = HP General Software

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: hp-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 securityalert PGP key, please send an email message as follows:
To: hpsecurityalert@hp.com
Subject: get key
Products: HP ZBook 15 G3 & ZBook 17 G3, HP ZBook 15u G3, HP ZBook Studio G3, HP
EliteBook Folio 1040 G3, HP EliteBook Folio 1012 x2 G2, HP EliteBook 840 G3, HP
EliteBook 850 G3, HP EliteBook 820 G3, H Elitebook 745 G3, HP Elitebook 755 G3,
HP Elitebook 725 G3, HP mt42 Mobile Thin Client, HP EliteDesk 8, HP Z240 Tower
Workstation N51, HP Z240 SFF Workstation N51, HP Z238 Microtower Workstation
N51

Copyright 2016 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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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
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