From secure@cup.hp.com Fri May  9 18:48:32 1997
Date: 2 May 1997 00:26:29 GMT
From: Security Alert <secure@cup.hp.com>
Subject: ISSalert: Sec. Vuln.  in talkd for HP-UX 10.10 & 10.20 only

Please direct any follow-ups to comp.sys.hp.hpux.


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**REVISED 01** HEWLETT-PACKARD SECURITY BULLETIN: #00061, 30 April 1997
Last Revised: 01 May 1997
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The information in the following Security Bulletin should be acted upon
as soon as possible.  Hewlett Packard will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Bulletin as soon as possible.

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PROBLEM:  Security Vulnerability in talkd

PLATFORM: **REVISED**
          HP 9000 Series 700/800s running only release HP-UX 10.10 & 10.20.

DAMAGE:   Vulnerabilities exist allowing network users to gain root
          privileges.

SOLUTION: **REVISED**
          Apply patch:
          PHNE_10042 for all platforms with HP-UX releases 10.10
          PHNE_10043 for all platforms with HP-UX release 10.20

AVAILABILITY: All patches are available now.

CHANGE SUMMARY: Platform and patch affectivity. 
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I.
   A. Background
   **REVISED**
      As referenced in CERT(sm) Advisory CA-97.04 on January 27, 1997 
      a vulnerability in the talkd executable has been discovered.
      The program talkd started shipping in HP-UX 10.10 releases.  
      Earlier releases of 10.X did not include talkd.

   B. Fixing the problem
      The vulnerability can be eliminated from HP-UX release 10.X
      by applying the appropriate patch.

   C. Recommended solution
      1. Determine which patch is appropriate for your operating
         system.

      2. Hewlett-Packard's HP-UX patches are available via email
         and the World Wide Web

         To obtain a copy of the Hewlett-Packard SupportLine email
         service user's guide, send the following in the TEXT PORTION
         OF THE MESSAGE to support@us.external.hp.com (no Subject
         is required):
                              send guide

         The users guide explains the HP-UX patch downloading process
         via email and other services available.

         World Wide Web service for downloading of patches
         is available via our URL:
                  (http://us.external.hp.com)

      3. Apply the patch to your HP-UX system.

      4. Examine /var/adm/sw/swinstall.log, for any relevant WARNING's 
         or ERROR's.

   D. Impact of the patch
      The patches for HP-UX release 10.X provide enhancements to the 
      talkd executable to avoid this vulnerability.

   E. To subscribe to automatically receive future NEW HP Security 
      Bulletins from the HP Electronic Support Center via electronic 
      mail, do the following:

      User your browser to get to the HP Electronic Support Center page 
      at:

      http://us-support.external.hp.com
      (for US, Canada, Asia-Pacific, & Latin-America)

      http://europe-support.external.hp.com
      (for Europe)

      Click on the Technical Knowledge Database, register as a user
      (remember to save the User ID assigned to you, and your password),
      and it will connect to a HP Search Technical Knowledge DB page.
      Near the bottom is a hyperlink to our Security Bulletin archive.
      Once in the archive there is another link to our current
      security patch matrix. Updated daily, this matrix is categorized
      by platform/OS release, and by bulletin topic.

   F. To report new security vulnerabilities, send email to

           security-alert@hp.com

      Please encrypt any exploit information using the security-alert
      PGP key, available from your local key server, or by sending a
      message with a -subject- (not body) of 'get key' (no quotes) to
      security-alert@hp.com.

      Permission is granted for copying and circulating this Bulletin to
      Hewlett-Packard (HP) customers (or the Internet community) for the
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