Operating System:

[HP-UX]

Published:

18 February 2016

Protect yourself against future threats.

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

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0405
     SSRT110025 rev.1 - HP-UX IPFilter, Remote Denial of Service (DoS)
                             18 February 2016

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

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

Product:           HP-UX IPFilter
Publisher:         Hewlett-Packard
Operating System:  HP-UX
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2016-1987  

Original Bulletin: 
   https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04974114

- --------------------------BEGIN INCLUDED TEXT--------------------

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

Note: the current version of the following document is available here:
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_n
a-c04974114

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c04974114
Version: 1

HPSBUX03437 SSRT110025 rev.1 - HP-UX IPFilter, Remote Denial of Service (DoS)

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

Release Date: 2016-02-16
Last Updated: 2016-02-16

Potential Security Impact: Remote Denial of Service (DoS)

Source: Hewlett Packard Enterprise, Product Security Response Team

VULNERABILITY SUMMARY
A potential security vulnerability has been identified with HP-UX running
HP-UX IPFilter. The vulnerability could be remotely exploited to cause a
denial of service (DoS).

Note: The vulnerability only exists when HP-UX IPFilter rules are configured
for UDP protocol packets and the keep state option is used in that IPFilter
rule.

References:

PSRT110025
CVE-2016-1987

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX IPFilter A.11.31.18.21

BACKGROUND

CVSS 2.0 Base Metrics
===========================================================
  Reference              Base Vector             Base Score
CVE-2016-1987    (AV:A/AC:H/Au:N/C:N/I:N/A:P)       1.8
===========================================================
             Information on CVSS is documented
            in HP Customer Notice: HPSN-2008-002

RESOLUTION

HPE has made the following mitigation information available to resolve the
vulnerability for version A.11.31.18.21 of HP-UX IPFilter.

This vulnerability can be mitigated by either of the following actions:

A. Remove the keep state option from udp rules

Search for rules with proto udp and keep state to identify the impacted rule
and remove the keep state option.

Example rules are as follows:
pass in quick on lanN proto udp from <IP-addr1> to <IP-addr2> keep state
pass out quick on lanN proto udp from <IP-addr3> to <IP-addr4> keep state

For the above example rules, remove the keep state from the rule as follows:
pass in quick on lanN proto udp from <IP-addr1> to <IP-addr2>
pass out quick on lanN proto udp from <IP-addr3> to <IP-addr4>

B. Alternatively, HP-UX IPFilter can be downgraded to version A.11.31.18.10

HISTORY
Version:1 (rev.1) - 16 February 2016 Initial release

Third Party Security Patches: Third party security patches that are to be
installed on systems running Hewlett Packard Enterprise (HPE) 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 HPE Services support channel. For other issues about
the content of this Security Bulletin, send e-mail to security-alert@hpe.com.

Report: To report a potential security vulnerability with any HPE supported
product, send Email to: security-alert@hpe.com

Subscribe: To initiate a subscription to receive future HPE Security Bulletin
alerts via Email: http://www.hpe.com/support/Subscriber_Choice

Security Bulletin Archive: A list of recently released Security Bulletins is
available here: http://www.hpe.com/support/Security_Bulletin_Archive

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

3C = 3COM
3P = 3rd Party Software
GN = HPE General Software
HF = HPE Hardware and Firmware
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PV = ProCurve
ST = Storage Software
UX = HP-UX

Copyright 2016 Hewlett Packard Enterprise

Hewlett Packard Enterprise 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 Enterprise and the names of Hewlett Packard Enterprise products
referenced herein are trademarks of Hewlett Packard Enterprise 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: GnuPG v1

iQEcBAEBAgAGBQJWw6zbAAoJEGIGBBYqRO9/zakIAL3jZPZgP7Ih3A6FGYRjj4By
G5QIsFJA00RVdl8FddCyzjauBX2AH/NEys50jfSy3TjETOJyrpQYcXY08hX+GNtB
UYhi0xUw5KXsupIVsjpB22aKtxFh2N+Z3F8/rnrSDf2NCGHlInlRza588B+TKIfr
YAj7gUV/569msAHtdM9dJkMQ4+GBhMWWxm6UbOn030GzHXvYpcNNkqXbiQubHo+0
NEtkciQV2DwEBpL6XyaO/CtCpo2GSb9D3BVwvjVwRWX6SVExyrPRoOjtkFCdiuQx
Y4AEYdvUuQYD5Jm6Epb+79UYxSQwrVgq+7Y6AR1TL6VdrM+K1+aoWs1EqH052uc=
=5+NB
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=XTml
-----END PGP SIGNATURE-----