Hewlett-Packard Company Information for VU#516825

Integer overflow in Sun RPC XDR library routines

Status

Affected

Vendor Statement

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**REVISED 10**
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0303-252
Originally issued: 19 March 2003
Last revised: 11 January 2004
SSRT2439 Rev.10 xdrmem_getbytes()
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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.


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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.11.11 - PHNE_28983
         B.11.11 - PHCO_28481
-->      B.11.22 - PHNE_29449


MANUAL ACTIONS: Yes - NonUpdate
               B.11.04, B.11.22:
                 Download and install the appropriate files.


AVAILABILITY:  Patches are available now for all except B.11.04
              and B.11.22 (libc.1).


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
                        information.
               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.
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 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 10**
    AFFECTED VERSIONS


     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
    installed.



     HP-UX B.11.22
    =============
    NFS.NFS-64SLIB
    NFS.NFS-SHLIBS
--> fix: PHNE_29449 or subsequent
    OS-Core.CORE2-SHLIBS
    fix: libc.1


     HP-UX B.11.11
    =============
    NFS.NFS-64SLIB
    NFS.NFS-SHLIBS
    fix: PHNE_28983 or subsequent
    OS-Core.CORE-SHLIBS
    fix: PHCO_28481 or subsequent


     HP-UX B.11.04
    =============
    NFS.NFS-64SLIB
    fix: libnsl.1.64_11.00, libnsl.a.64_11.00
    NFS.NFS-SHLIBS
    fix: libnsl.1.32_11.00, libnsl.a.32_11.00
    OS-Core.CORE-SHLIBS
    fix: libc.1


     HP-UX B.11.00
    =============
    NFS.NFS-64SLIB
    NFS.NFS-SHLIBS
    fix: PHNE_28982 or subsequent
    OS-Core.CORE-SHLIBS
    fix: PHCO_28480 or subsequent


     HP-UX B.10.20
    =============
    OS-Core.CORE-SHLIBS
    fix: PHCO_26158 or subsequent


     END AFFECTED VERSIONS



 B. Recommended solution

**REVISED 10**
   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.11.11 - PHNE_28983
         B.11.11 - PHCO_28481
-->      B.11.22 - PHNE_29449


 --> In addition download and install the appropriate
--> library files for B.11.04 and B.11.22 as described
--> below.


     System:           hprc.external.hp.com  (192.170.19.51)
    Login:            xdr2
    Password:         xdr2


     Browser ftp access:

     ftp://xdr2:xdr2@hprc.external.hp.com/
    or
    ftp://xdr2:xdr2@192.170.19.51/



        Note: There is an ftp defect in IE5 that may result in
              a browser hang.  To work around this:
       Select Tools -> Internet Options -> Advanced
       Un-check the option: [ ] Enable folder view for FTP sites


         If you wish to verify the md5 sum please refer to:

               HPSBUX9408-016
              Patch sums and the MD5 program


     Download the appropriate files and unpack with gunzip:

        libc.1.gz            # B.11.04, B.11.22
       libnsl.1.32_11.00.gz # B.11.04
       libnsl.a.32_11.00.gz # B.11.04
       libnsl.1.64_11.00.gz # B.11.04
       libnsl.a.64_11.00.gz # B.11.04


      Verify the cksum or md5.

         If you wish to verify the md5 sum please refer to:

               HPSBUX9408-016
              Patch sums and the MD5 program


      cksum:
     3108550729 1867776 libc.1
     2543748420 679936 libnsl.1.32_11.00
     3883898582 652664 libnsl.1.64_11.00
     2393869471 818268 libnsl.a.32_11.00
     205723668 1456024 libnsl.a.64_11.00


 MD5 (libc.1) = 118ce482dbb3982b7484ddc434d77a51
MD5 (libnsl.1.32_11.00) = a6bbfcae4a7044b0d1e9aece871c126e
MD5 (libnsl.1.64_11.00) = b3c76866d75a4216be7787f219c051df
MD5 (libnsl.a.32_11.00) = 1c0aea725173673eb1c8e9410180096c
MD5 (libnsl.a.64_11.00) = 06c8fd367c7620a017e9bb2e7df3ec7d


      For B.11.04
     ====================================
     #DIR=[path to new files]
     #cd /usr/lib


      #cp $DIR/libnsl.1.32_11.00 libnsl.1.new
     #cp $DIR/libnsl.a.32_11.00 libnsl.a.new
     #cp $DIR/libc.1 libc.1.new


      #chmod 555 libnsl.1.new
     #chmod 444 libnsl.a.new
     #chmod 555 libc.1.new


      #chown bin:bin libnsl.1.new
     #chown bin:bin libnsl.a.new
     #chown bin:bin libc.1.new


      #mv libnsl.1 libnsl.1.orig
     #mv libnsl.a libnsl.a.orig
     #mv libc.1 libc.1.orig


      #mv libnsl.1.new libnsl.1
     #mv libnsl.a.new libnsl.a
     #mv libc.1.new libc.1


      #cd /usr/lib/pa20_64

      #cp $DIR/libnsl.1.64_11.00 libnsl.1.new
     #cp $DIR/libnsl.a.64_11.00 libnsl.a.new


      #chmod 555 libnsl.1.new
     #chmod 444 libnsl.a.new


      #chown bin:bin libnsl.1.new
     #chown bin:bin libnsl.a.new


      #mv libnsl.1 libnsl.1.orig
     #mv libnsl.a libnsl.a.orig


      #mv libnsl.1.new libnsl.1
     #mv libnsl.a.new libnsl.a


      After this, any applications that use libnsl.1 must be
     restarted.  Any applications that use libnsl.a must
     be relinked and restarted.
     Any applications that use libc.1 must be restarted.


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


      For B.11.22
     ====================================
-->  Install PHNE_29449 or subsequent and:


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


      After this, any applications that use libnsl.so.1 must be
     restarted.


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



 C. To subscribe to automatically receive future NEW HP Security
   Bulletins from the HP IT Resource Center via electronic
   mail, do the following:


    Use your browser to get to the HP IT Resource Center page
   at:


       http://itrc.hp.com

    Use the 'Login' tab at the left side of the screen to login
   using your ID and password.  Use your existing login or the
   "Register" button at the left to create a login, in order to
   gain access to many areas of the ITRC.  Remember to save the
   User ID assigned to you, and your password.


    In the left most frame select "Maintenance and Support".

    Under the "Notifications" section (near the bottom of
   the page), select "Support Information Digests".


    To -subscribe- to future HP Security Bulletins or other
   Technical Digests, click the check box (in the left column)
   for the appropriate digest and then click the "Update
   Subscriptions" button at the bottom of the page.


    or

    To -review- bulletins already released, select the link
   (in the middle column) for the appropriate digest.


    NOTE: Using your itrc account security bulletins can be
         found here:
   http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin



    To -gain access- to the Security Patch Matrix, select
   the link for "The Security Bulletins Archive".  (near the
   bottom of the page)  Once in the archive the third link is
   to the current Security Patch Matrix. Updated daily, this
   matrix categorizes security patches by platform/OS release,
   and by bulletin topic.  Security Patch Check completely
   automates the process of reviewing the patch matrix for
   11.XX systems.  Please note that installing the patches
   listed in the Security Patch Matrix will completely
   implement a security bulletin _only_ if the MANUAL ACTIONS
   field specifies "No."


    The Security Patch Check tool can verify that a security
   bulletin has been implemented on HP-UX 11.XX systems providing
   that the fix is completely implemented in a patch with no
   manual actions required.  The Security Patch Check tool cannot
   verify fixes implemented via a product upgrade.


    For information on the Security Patch Check tool, see:
   http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
   displayProductInfo.pl?productNumber=B6834AA


    The security patch matrix is also available via anonymous
   ftp:


    ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/

    On the "Support Information Digest Main" page:
   click on the "HP Security Bulletin Archive".


    The PGP key used to sign this bulletin is available from
   several PGP Public Key servers.  The key identification
   information is:


       2D2A7D59
      HP Security Response Team (Security Bulletin signing only)
      <security-alert@hp.com>
      Fingerprint =
        6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59


    If you have problems locating the key please write to
   security-alert@hp.com.  Please note that this key is
   for signing bulletins only and is not the key returned
   by sending 'get key' to security-alert@hp.com.



 D. 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.


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(c)Copyright 2004 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
in this document is subject to change without notice.
Hewlett-Packard Company and the names of HP products referenced
herein are trademarks and/or service marks of Hewlett-Packard
Company.  Other product and company names mentioned herein may be
trademarks and/or service marks of their respective owners.


 ________________________________________________________________


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Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References

None

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.