TUCoPS :: HP/UX :: ciach029.txt

HP-UX Update Sendmail Patches Vulnerability



                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___

                             INFORMATION BULLETIN

                      HP-UX sendmail Patches Vulnerability
                      Update to sendmail in Bulletin H-29

May 1, 1997 22:00 GMT                                             Number H-29a
PROBLEM:       In recent months, public domain sendmail developments have
               uncovered several security vulnerabilities.
PLATFORM:      HP-UX 9 and 10 with sendmail 8.7.5 or earlier.
DAMAGE:        Allows unauthorized file access possibly gaining root
SOLUTION:      Apply patches as indicated below.
VULNERABILITY  Exploit details involving this vulnerability have been made
ASSESSMENT:    publicly available.

This bulletin updates H-29by adding patch information from Hewlett-Packard. It
also corrects the problems noted in G-43 bringing all HP-UX versions to sendmail
8.7.6 revision.  HP feels comfortable (see below) with this version though it
does not address problems mentioned in H-11.

[ Start Hewlett-Packard Advisory ]

Document ID:  HPSBUX9704-059
Date Loaded:  970430
      Title:  Sendmail patches for HP-UX releases 9.X thru 10.20

- -------------------------------------------------------------------------
        HEWLETT-PACKARD SECURITY BULLETIN: #00059, 30 April 1997
- -------------------------------------------------------------------------

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.

- -------------------------------------------------------------------------
PROBLEM:  Sendmail vulnerabilities in HP-UX releases

PLATFORM: HP 9000 Series 700/800s running versions of HP-UX 9.X & 10.X

DAMAGE:   Allows unauthorized file access.

SOLUTION: Apply the appropriate patch:
          PHNE_10116 on all platforms with HPUX releases 9.X, running
                     sendmail version 5.65;
          PHNE_10090 on all platforms with HPUX releases 10.0, 10.01,
                     10.10 running sendmail vers. 5.65;
          PHNE_9624 on all platforms with HPUX release 10.20, running
                     sendmail version

AVAILABILITY:  All patches are available now.
- -------------------------------------------------------------------------
   A. Background
      This bulletin addresses CERT advisories CA-95.05, CA-96.20, and

      In recent months, public domain sendmail developments have
      uncovered several security vulnerabilities.  Hewlett-Packard has
      added the required fixes into our current sendmail releases.
      Prior to the new patches associated with this bulletin,
      Hewlett-Packard provided the following versions of sendmail:

              HP-UX 9.X through HP-UX 10.10 : sendmail 5.65
              HP-UX 10.20 (as shipped)      : sendmail
              HP-UX 10.20 + PHNE_8702       : sendmail 8.7.5

      The sendmail program is located in (/usr/{sbin,lib}/sendmail),
      i.e., /usr/sbin/sendmail or /usr/lib/sendmail, depending on
      your system).

   B. Hewlett-Packard continues to patch the 5.65 version of sendmail on
      those releases with which it originally shipped (all pre-10.20
      HP-UX). Similarly, the HP-UX release 10.20 started shipping
      sendmail; a companion patch PHNE_8702 brought the sendmail
      program to release level 8.7.5 functionality.

      Applying the 10.20 patch associated with this security bulletin
      will upgrade sendmail to version 8.7.6.  This sendmail release has
      been found to be stable and is a patch level with which
      Hewlett-Packard currently feels comfortable.
      The remaining patches associated with this bulletin provide a
      patched version of sendmail 5.65.

   C. Recommended solution
      Apply the patches appropriate to your system release level.

   D. Impact of the patch
      Applying the 10.20 patch associated with this security bulletin
      will upgrade sendmail /usr/sbin/sendmail binary to version 8.7.6.
      This sendmail release has been found to be stable and is a patch
      level with which Hewlett-Packard currently feels comfortable.
      The remaining patches associated with this bulletin provide a
      patched version of sendmail 5.65.

   E. To subscribe to automatically receive future NEW HP Security
      Bulletins from the HP SupportLine Digest service via electronic
      mail, do the following:

      1)  From your Web browser, access the URL:

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

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

      2)  On the HP Electronic Support Center main screen, select
      the hyperlink "Support Information Digests".

      3)  On the "Welcome to HP's Support Information Digests" screen,
      under the heading "Register Now", select the appropriate hyperlink
      "Americas and Asia-Pacific", or "Europe".

      4)  On the "New User Registration" screen, fill in the fields for
      the User Information and Password and then select the button
      labeled "Submit New User".

      5)  On the "User ID Assigned" screen, select the hyperlink
      "Support Information Digests".

      ** Note what your assigned user ID and password are for future

      6)  You should now be on the "HP Support Information Digests Main"
      screen.  You might want to verify that your email address is
      correct as displayed on the screen.  From this screen, you may
      also view/subscribe to the digests, including the security
      bulletins digest.

      To get a patch matrix of current HP-UX and BLS security
      patches referenced by either Security Bulletin or Platform/OS,
      click on following screens in order:
         Technical Knowledge Database
         Browse Security Bulletins
         Security Bulletins Archive
         HP-UX Security Patch Matrix

   F. To report new security vulnerabilities, send email to


      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

   Permission is granted for copying and circulating this Bulletin to
   Hewlett-Packard (HP) customers (or the Internet community) for the
   purpose of alerting them to problems, if and only if, the Bulletin is
   not edited or changed in any way, is attributed to HP, and provided
   such reproduction and/or distribution is performed for non-commercial

   Any other use of this information is prohibited.  HP is not liable
   for any misuse of this information by any third party.
- -----End of Document ID:  HPSBUX9704-059--------------------------------------

[ End Hewlett-Packard Advisory ]


CIAC wishes to acknowledge the contributions of Hewlett-Packard for the
information contained in this bulletin.

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