SSRT2439 Rev.11 HP-UX xdrmem_getbytes()

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**REVISED 11**
 Originally issued: 19 March 2003
 Last revised: 14 April 2004
 SSRT2439 Rev.11 HP-UX xdrmem_getbytes()

NOTICE: There are no restrictions for distribution of this
Bulletin provided that it remains complete and intact.

The information in the following Security Bulletin should be
acted upon as soon as possible.  Hewlett-Packard Company 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: Potential buffer overflow in xdrmem_getbytes() and
         related functions.

IMPACT: Potential unauthorized access, denial of service.

PLATFORM: HP-UX B.10.20, B.11.00, B.11.04, B.11.11, and B.11.22

SOLUTION: Install the appropriate patches.

          B.10.20 - PHCO_26158
          B.11.00 - PHNE_28982
          B.11.00 - PHCO_28480
 -->      B.11.04 - PHCO_30407
 -->      B.11.04 - PHNE_30168
          B.11.11 - PHNE_28983
          B.11.11 - PHCO_28481
          B.11.22 - PHNE_29449

                B.11.22 download and install libc.1.

AVAILABILITY:  Patches are available now for all except libc.1
               for B.11.22.

CHANGE SUMMARY: Rev.01 - Corrected instructions for replacing
                         libc.1 on 11.00 and 11.11.
                         Added CERT CA-2003-10 reference.
                Rev.02 - Corrected instructions 10.20
                Rev.03 - Patches are available for 11.00 and 11.11
                         libc.1 must still be manually installed
                         for 11.00 and 11.11
                Rev.04 - Corrected 11.00 and 11.11 patch
                Rev.05 - Added note about general release patches
                Rev.06 - Added PHCO_26158.
                         Added AFFECTED VERSIONS section.
                Rev.07 - Added PHCO_28982 and PHCO_28983.
                Rev.08 - Corrected patch names.
                         PHCO_28982 should be PHNE_28982.
                         PHCO_28983 should be PHNE_28983.
                Rev.09 - Added PHCO_28480 and PHCO_28481.
                Rev.10 - Added PHNE_29449.
                Rev.11 - Added PHCO_30407 and PHNE_30168.
 A. Background

    There are potential buffer overflows in
    xdrmem_getbytes() and related functions.

    This issue has been reported by CERT/CC in
    advisory CA-2003-10.

    HP Tru64 UNIX/TruCluster Servers:
    The following potential security vulnerability has been
    identified or reported in the HP Tru64 UNIX operating system
    that may result in unauthorized Privileged Access or a
    Denial of Service (DoS).
    This potential vulnerability may be in the form of Local
    and Remote security domain risks.

    Cross reference: SSRT2322, SSRT2384, SSRT2341,
                     SSRT2439, SSRT2412

    Not Impacted:

      HP NonStop Servers
      HP OpenVMS

**REVISED 11**

     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.11.22
     action: install PHNE_29449 or subsequent
     action: install libc.1

     HP-UX B.11.11
     action: install PHNE_28983 or subsequent
     action: install PHCO_28481 or subsequent

     HP-UX B.11.04
     action: install PHNE_30168 or subsequent
     action: install PHCO_30407 or subsequent

     HP-UX B.11.00
     action: install PHNE_28982 or subsequent
     action: install PHCO_28480 or subsequent

     HP-UX B.10.20
     action: install PHCO_26158 or subsequent


 B. Recommended solution

**REVISED 11**
    Note: If the preliminary patches, PHNE_28929.depot or
          PHNE_28930.depot have been installed, they must
          be removed with swremove before installing the
          general release patches PHNE_28982 (11.00) or
          PHNE_28983 (11.11) or subsequent.

    Remove the preliminary patches with swremove
    if they are on the system:

      PHNE_28929.depot          #B.11.00
      PHNE_28930.depot          #B.11.11

     Install the appropriate patches.

          B.10.20 - PHCO_26158
          B.11.00 - PHNE_28982
          B.11.00 - PHCO_28480
 -->      B.11.04 - PHCO_30407
 -->      B.11.04 - PHNE_30168
          B.11.11 - PHNE_28983
          B.11.11 - PHCO_28481
          B.11.22 - PHNE_29449

     In addition download and install libc.1 for B.11.22
     as described below.

 --> Please write to to obtain
 --> libc.1 for B.11.22.

      Verify the cksum or md5.

      3108550729 1867776 libc.1

 MD5 (libc.1) = 118ce482dbb3982b7484ddc434d77a51

      For B.11.22
      Install PHNE_29449 or subsequent and:

      #DIR=[path to new files]
      #cd /usr/lib
      #cp $DIR/libc.1
      #chmod 555
      #chown bin:bin
      #mv libc.1 libc.1.orig
      #mv libc.1

      Any applications that use libc.1 must be restarted.

      Rebooting is the recommended way to restart the applications
      using libc.1.

C: Support, Subscription, and Reporting Information

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NOTE: Installing patches listed in the Security Patch Matrix will
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_only_ if there are no MANUAL ACTIONS included.

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REPORT: To report a potential security vulnerability with any HP
supported product, send email to:

System management and security procedures must be reviewed
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reviewing and enhancing the security features of software products
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Version: PGP 8.0.2


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


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