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SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c00797077
Version: 1

HPSBTU02168 SSRT061237 rev.1 - HP Tru64 UNIX Running gzip, gunzip, and gzcat, 
Remote Unauthorized Arbitrary Code Execution or Denial of Service (DoS)

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: Remote unauthorized arbitrary code execution or Denial of Service (DoS)

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

VULNERABILITY SUMMARY
Potential security vulnerabilities have been identified in the gzip, gunzip, and gzcat programs running on the HP Tru64 UNIX Operating System. The vulnerabilities could be exploited by a remote, unauthorized user to execute arbitrary code or cause a Denial of Service (DoS).

References: CVE-2006-4334, CVE-2006-4335, CVE-2006-4336, CVE-2006-4337, CVE-2006-4338, CERT VU#933712, VU#381508, VU#554780, VU#773548, VU#596848

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
The following supported software versions are affected:

    * HP Tru64 UNIX 5.1B-3 running gzip, gunzip and gzcat
    * HP Tru64 UNIX 5.1B-2/PK4 running gzip, gunzip and gzcat
    * HP Tru64 UNIX 5.1A PK6 running gzip, gunzip and gzcat
    * HP Tru64 UNIX 4.0G PK4 running gzip and gunzip
    * HP Tru64 UNIX 4.0F PK8 running gzip and gunzip

BACKGROUND

The gzip utilities included with HP Tru64 Unix 4.0G and 4.0F did not provide the gzcat command.

RESOLUTION

HP has released the following Early Release Patch kits (ERPs) publicly for use by any customer. The ERP kits use dupatch to install and will not install over any Customer Specific Patches (CSPs) that have file intersections with the ERP.

The ERP kits distribute the following files:

    * /usr/bin/gzip
    * /usr/bin/gunzip
    * /usr/bin/gzcat (HP Tru64 Unix 5.1A and 5.1B only)

HP Tru64 UNIX Version 5.1B-3 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1000947-V51BB26-ES-20061011 
Name:T64KIT1000947-V51BB26-ES-20061011.tar
MD5 Checksum: 2fc26d4d30da326fde68525681f33545

HP Tru64 UNIX Version 5.1B-2/PK4 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1000948-V51BB25-ES-20061011 
Name: T64KIT1000948-V51BB25-ES-20061011.tar
MD5 Checksum: 9b43e88360d19810ba7bf90b48561a8a

HP Tru64 UNIX Version 5.1A PK6 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1000949-V51AB24-ES-20061011 
Name: T64KIT1000949-V51AB24-ES-20061011.tar
MD5 Checksum: 93e6893b5e05d6f5429e757eb84071ad

HP Tru64 UNIX Version 4.0G PK4 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT1000950-V40GB22-ES-20061011 
Name: T64KIT1000950-V40GB22-ES-20061011.tar
MD5 Checksum: 7d72d0b7367c7cb1d0bd25ffb5b5a908

HP Tru64 UNIX Version 4.0F PK8 ERP Kit
Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=DUXKIT1000951-V40FB22-ES-20061011 
Name: DUXKIT1000951-V40FB22-ES-20061011.tar
MD5 Checksum: 9ef43444f4f82f563f3e2f476ef3eef1

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@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
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To update an existing subscription:
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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.

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