SSRT3487 rev.5 remote denial of service in tftpd

From: Security Alert (secure_at_hpchs.cup.hp.com)
Date: 01/13/05 

Date: Thu, 13 Jan 2005 13:47:31 GMT

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**REVISED 05**
 Source: HEWLETT-PACKARD COMPANY
 SECURITY BULLETIN: HPSBUX0306-266
 Originally issued: 18 June 2003
 Last revised: 10 January 2005
 SSRT3487 rev.5 remote denial of service in tftpd
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NOTICE:
 There are no restrictions for distribution of this Bulletin
 provided that it remains complete and intact.

 The information in this Security bulletin should be acted upon
 as soon as possible.
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PROBLEM: Potential Security Vulnerability in tftpd.

IMPACT: Potential denial of service, remotely exploitable.

PLATFORM: HP-UX B.11.00,
          HP-UX B.11.04, HP-UX B.11.11, HP-UX B.11.22

**REVISED 05**
SOLUTION: B.11.00 - Install PHNE_28828 or subsequent.
          B.11.04 - Install PHNE_30589 or subsequent.
 --> B.11.11 - Install PHNE_32449 or subsequent.
          B.11.22 - Install a preliminary patch as
                    described below.

MANUAL ACTIONS: Yes - NonUpdate
                B.11.22 - Install a preliminary patch.
 --> B.11.11, B.11.00, B.11.04 - No manual actions.

AVAILABILITY: The B.11.0, B.11.04, and B.11.11 patches are
              available now on itrc.hp.com.

CHANGE SUMMARY: Rev.1 - added 11.00 patch.
                        Modified Section C with instructions for
                        Subscriber's Choice and other changes.
                Rev.2 - added B.11.04 and B.11.11 patches.
                Rev.3 - restored B.11.11 preliminary patch.
                Rev.4 - added B.11.11 patch.
                Rev.5 - changed B.11.11 patch.
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 A. Background

    Certain network traffic can potentially cause tftpd to
    become unresponsive resulting in a denial of service.

     AFFECTED VERSIONS

     Note: To determine if a system has an affected version,
           search the output of "swlist -a revision -l fileset"
           for an affected fileset. Then determine if the
           recommended patch or update is installed.

     HP-UX B.11.00
     =============
     InternetSrvcs.INETSVCS-BOOT
     InternetSrvcs.INET-ENG-A-MAN
     InternetSrvcs.INETSVCS-INC
     action: Install PHNE_28828 or subsequent.

     HP-UX B.11.04
     =============
     InternetSrvcs.INETSVCS-BOOT
     InternetSrvcs.INET-ENG-A-MAN
     InternetSrvcs.INETSVCS-INC
     action: Install PHNE_30589 or subsequent.

**REVISED 05**
     HP-UX B.11.11
     =============
     InternetSrvcs.INETSVCS-BOOT
 --> action: Install PHNE_32449 or subsequent.

     HP-UX B.11.22
     =============
     InternetSrvcs.INETSVCS2-BOOT
     action: Install PHNE_29130.depot

     END AFFECTED VERSIONS

 B. Recommended solution

**REVISED 05**
    HP-UX B.11.00 - Install PHNE_28828 or subsequent.
    HP-UX B.11.04 - Install PHNE_30589 or subsequent.
 -->HP-UX B.11.11 - Install PHNE_32449 or subsequent.

    HP-UX B.11.22:

    1. Write to security-alert@hp.com to receive PHNE_29130.depot.

    2. Verify the cksum or md5 sum.

      cksum:
      1515060965 2885 PHNE_29130.text

      MD5 (PHNE_29130.text) = aa2a5b0f9e63fd797015be64f569c9e7

      3. Install PHNE_29130.depot using swinstall.

         Note: This preliminary patch must be removed before
                installing the general release patch when it
                becomes available.

* The software product category that this Security Bulletin
  relates to is represented by the 5th and 6th characters of the
  Bulletin number: GN=General, MA=Management Agents,
  MI=Misc. 3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers,
  OV=HP OpenVMS, PI=HP Printing & Imaging, ST=HP Storage,
  TU=HP Tru64 UNIX, TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault

SUPPORT: For further information, contact HP Services support
         channel.

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HP-UX SPECIFIC SECURITY BULLETINS*:
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://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA

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
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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,
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(c)Copyright 2005 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or
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--
Yours truly,
HP S/W Security Team
WTEC Cupertino, California
Return-Path: secure@cup.hp.com
Reply-to: security-alert@hp.com

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