SSRT3631 rev.9 HP-UX sendmail remote privileged access

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**REVISED 09**
 Originally issued: 21 September 2003
 Last revised: 22 February 2005
 SSRT3631 rev.9 HP-UX sendmail remote privileged access
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.
PROBLEM: Potential security vulnerability in sendmail

IMPACT: Potential unauthorized Privileged Access.

PLATFORM: HP-UX releases B.11.00, B.11.04 (VVOS), B.11.11,
          B.11.22, B.11.23

**REVISED 09**
          B.11.00 - Sendmail 8.9.3 - PHNE_29773
          B.11.00 - Sendmail 8.11.1 - B.
          B.11.04 - Sendmail 8.9.3 - PHNE_30224
          B.11.11 - Sendmail 8.9.3 - PHNE_29774
          B.11.11 - Sendmail 8.11.1 - B.
          B.11.22 - Sendmail 8.11.1 - PHNE_29912
          B.11.23 (IA)  - Sendmail 8.11.1 - PHNE_29913
 -->      B.11.23 (PA)  - Sendmail 8.11.1 - PHNE_31734

                All revisions - modify /etc/mail/
                          as described below and in
                B.11.00 - Sendmail 8.11.1 - Update to
                B.11.11 - Sendmail 8.11.1 - Update to

AVAILABILITY: The patches and web upgrades are available

CHANGE SUMMARY: Rev.01 - Added CAN-2003-0681.
                Rev.02 - sendmail.811.11.22.r5 replaces
                Rev.03 - HPSecurityBul281.depot available.
                Rev.04 - HPSecurityBul281a.depot available.
                Rev.05 - HPSecurityBul281b.depot adds B.11.23
                         and corrects B.11.22.
                Rev.06 - Added PHNE_29773 and PHNE_29774.
                         Added Sendmail 8.11.1 B.
                         Added Sendmail 8.11.1 B.
                Rev.07 - Added PHNE_29912 and PHNE_29913.
                Rev.08 - Added PHNE_30224.
                Rev.09 - Added PHNE_31734.
 A. Background
    A potential security vulnerability with sendmail has been
    reported in HP-UX.  This potential vulnerability may result
    in unauthorized Privileged Access.

    This is the vulnerability reported in CERT/CC CA-2003-25:


    New versions are available which also address the
    the issue reported here:


**REVISED 09**

     The following is a list by HP-UX revision of
     affected filesets and the fileset revision or
     patch containing the fix.  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
     a fixed revision or the applicable patch is

     HP-UX B.11.23
     For Integrity (IA) servers
     action: install PHNE_29913 or subsequent
          modify /etc/mail/

     HP-UX B.11.23
 --> For HP 9000 (PA) servers
 --> action: install PHNE_31734 or subsequent
          modify /etc/mail/

     HP-UX B.11.22
     action: install PHNE_29912 or subsequent
          modify /etc/mail/

     HP-UX B.11.11
     action: install revision B. or subsequent
          modify /etc/mail/

     action: install PHNE_29774 or subsequent
          modify /etc/mail/

     HP-UX B.11.04
     action: install PHNE_30224 or subsequent
          modify /etc/mail/

     HP-UX B.11.00
     action: install revision B. or subsequent
          modify /etc/mail/

     action: install PHNE_29773 or subsequent
          modify /etc/mail/


 B. Recommended solution

     If the following changes to /etc/mail/ were
     not done when HPSBUX0304-253 was implemented they should
     be done now:

      Modify /etc/mail/ as follows:

       Add "restrictqrun" to the PrivacyOptions.
       After the change the line should read:

         O PrivacyOptions=authwarnings,restrictqrun

     Patches and web upgrades are now available for
     B.11.00, B.11.04, B.11.11, B.11.22, and B.11.23.
     HPSecurityBul281b should be removed before installing
     the patch or web upgrade if it had been installed::

        swremove HPSecurityBul281b.INETSVCS-RUN


    Note: If you receive either of the following messages after
    applying the updates, please follow the recommended action.

     warning: /etc/mail/aliases has world read or
                        write permission. This is unsafe.

     warning: /etc/mail/aliases.db has world read or
                        write permission. This is unsafe.

     Recommended action

      Execute the following commands.

        chmod 640 /etc/mail/aliases
        chmod 640 /etc/mail/aliases.db
        sendmail -bi

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For more information: /

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Version: PGP 8.1


Yours truly,
HP S/W Security Team
WTEC Cupertino, California


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