[security bulletin] HPSBUX01137 SSRT5954 rev.9 - HP-UX Running TCP/IP (IPv4), Remote Denial of Service (DoS)
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c00571568
Version: 9
HPSBUX01137 SSRT5954 rev.9 - HP-UX Running TCP/IP (IPv4), Remote Denial of
Service (DoS)
NOTICE: The information in this Security Bulletin should be acted upon as soon
as possible.
Release Date: 2005-04-24
Last Updated: 2007-04-02
Potential Security Impact: Remote Denial of Service (DoS)
Source: Hewlett-Packard Company, HP Software Security Response Team
VULNERABILITY SUMMARY
A potential security vulnerability has been identified with
HP-UX running TCP/IP (IPv4). This vulnerability could be remotely
exploited by an unauthorized user to cause a Denial of Service (DoS).
References: CAN-2005-1192
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.11, B.11.22, B.11.23.
BACKGROUND
To determine if an HP-UX system has an affected version,
search the output of "swlist -a revision -l fileset"
for one of the filesets listed below. For affected systems
verify that the recommended action has been taken.
AFFECTED VERSIONS
HP-UX B.11.11
=============
Networking.NET2-KRN
action: install PHNE_33159
HP-UX B.11.22
=============
Networking.NET2-KRN
action: install preliminary binary files per HPSBUX01164
HP-UX B.11.23
=============
Networking.NET2-KRN
action: install PHNE_32606
HP-UX B.11.11
=============
IPSec.IPSEC2-KRN
action: install revision A.01.07.02 and PHNE_33159 or subsequent
HP-UX B.11.11
=============
IPSec.IPSEC2-KRN
- ->action: install revision A.02.00.01 and TOUR 3.0
HP-UX B.11.23
=============
IPSec.IPSEC2-KRN
- ->action: install revision A.02.00.01 and PHNE_32606 or subsequent
HP-UX B.11.23
=============
IPSec.IPSEC2-KRN
- ->action: install revision A.02.00.01 and TOUR 3.0
END AFFECTED VERSIONS
Certain network traffic can result in a Denial of Service (DoS) for HP-UX
systems running TCP/IP (IPv4). Receiving a certain packet on any open
TCP/IP connection can result in a Denial of Service (DoS) condition which
can only be corrected by a reboot of the affected system. The Denial of
Service (DoS) is characterized by high cpu utilization and a lack of
response on any I/O port including the system console.
Previous revisions of this Security Bulletin recommended setting
ip_pmtu_strategy to 0 or 3 as a workaround. Patches or updates
to resolve the issue are now available. After these patches or updates
are installed the workaround will no longer be necessary or recommended.
The ip_pmtu_strategy parameter should be restored to the default value of 2.
RESOLUTION
Patches are available for the core TCP/IP product for
B.11.11 and B.11.23 from http://itrc.hp.com
For B.11.11 - PHNE_33159 or subsequent
For B.11.23 - PHNE_32606 or subsequent
Binary files are available for B.11.22 as discussed in HPSBUX01164.
Patches and updates are available for IPSec.
The patches are available from http://itrc.hp.com
IPSec and TOUR (Transport Optional Upgrade Release) are available from
http://www.hp.com/go/softwaredepot
For B.11.11 IPSec:
IPSec revision A.01.07.02 and PHNE_33159 or subsequent
or
IPSec revision A.01.07.02 and TOUR 3.0
For B.11.23 IPSec:
- -> IPSec revision A.02.00.01 and PHNE_32606 or subsequent
or
- -> IPSec revision A.02.00.01 and TOUR 3.0
MANUAL ACTIONS: Yes - NonUpdate
B.11.22 Install preliminary binary files per HPSBUX01164.
B11.11 running IPSec
Install IPSec revision A.01.07.02 and PHNE_33159 or subsequent
or
Install IPSec revision A.01.07.02 and TOUR 3.0
B11.23 running IPSec
Install IPSec revision A.02.00.01 and PHNE_32606 or subsequent
or
- ->Install IPSec revision A.02.00.01 and TOUR 3.0
PRODUCT SPECIFIC INFORMATION
HP-UX Security Patch Check: Security Patch Check revision B.02.00
analyzes all HP-issued Security Bulletins to provide a subset of
recommended actions that potentially affect a specific HP-UX
system. For more information:
http://software.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6834AA
HISTORY
rev.0 - 24 April 2005 Initial release
rev.1 - 25 May 2005 Binary files available per HPSBUX01164
rev.2 - 1 June 2005 IPSec not included in binary files
rev.3 - 27 June 2005 PHNE_33159 is available for B.11.11
rev.4 - 10 July 2005 PHNE_32606 is available for B.11.23
rev.5 - 24 July 2005 Clarified the Resolution and Manual Actions sections
Version:7 (rev.6) 5 December 2005 IPSec revisions available
rev.7 Skipped for formatting reasons
Version:8 (rev.8) 23 January 2006 Add rev. to title
Version:9 (rev.9) 2 April 2007 Change A.2.00.01 to A.02.00.01
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
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* 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"
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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
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subject to change without notice. Hewlett-Packard Company and the names of
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