Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2003.0385 -- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0303-252
Potential Security Vulnerability in xdrmem_getbytes() (rev.5)
30 May 2003
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AusCERT Security Bulletin Summary
---------------------------------
Product: XDR Library
Publisher: Hewlett-Packard
Operating System: HP-UX 11.22
HP-UX 11.11
HP-UX 11.04
HP-UX 10.20
Platform: HP9000 Series 700/800
Impact: Execute Arbitrary Code/Commands
Denial of Service
Access Required: Remote
CVE Names: CAN-2003-0028
Ref: AL-2003.03
ESB-2003.0376
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Hash: SHA1
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**REVISED 05**
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0303-252
Originally issued: 19 March 2003
Last revised: 28 May 2003
SSRT2439 Potential Security Vulnerability in xdrmem_getbytes()
(rev.5)
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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.
-----------------------------------------------------------------
PROBLEM: Potental buffer overflow in xdrmem_getbytes() and
related functions.
IMPACT: Potential unauthorized access, denial of service.
PLATFORM: HP 9000 Series 700 and 800 10.20, 11.00, 11.04, 11.11,
and 11.22
SOLUTION: Until patches are available manually install the
appropriate fixed libraries. Preliminary patches
are now available for 11.00 and 11.11 which eliminate
the manual installation of all but libc.1.
**REVISED 05**
--> PHNE_28567(11.00) and PHNE_28568(11.11) provide a
--> partial solution. Please refer to the note below.
MANUAL ACTIONS: Yes - NonUpdate
Download and install the appropriate files.
AVAILABILITY: The files are available now. This bulletin will
be revised when patches are available.
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
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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.
NOTE:
The files listed below also have the fix for
HPSBUX0209-215
SSRT2336 Security Vulnerability in XDR library
This bulletin should be implemented instead of
HPSBUX0209-215.
**REVISED 05**
-> NOTE:
-> The general release patches PHNE_28567 (11.00) and
->PHNE_28568 (11.11) contain the fix for some of the
-> functions which are vulnerable. The preliminary patches
-> PHNE_28929(11.00) and PHNE_28930 (11.11) contain the fix
-> for all the affected routines. The routines fixed in
-> PHNE_28567 and PHNE_28568 are thought to be more commonly
-> used than the additional routines fixed in PHNE_28929 and
-> PHNE_28930. PHNE_28567 and PHNE_28567 are available now from
-> <http://itrc.hp.com>. If it is not possible to install
-> preliminary patches there is some benefit to installing
-> PHNE_28567 and PHNE_28568.
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
B. Recommended solution
Until patches are released, download and manually install
the appropriate libraries and preliminary patches.
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 # 10.20, 11.00, 11.04,
# 11.11, 11.22
PHNE_28929.depot.gz # 11.00
PHNE_28929.text.gz # 11.00
PHNE_28930.depot.gz # 11.11
PHNE_28930.text.gz # 11.11
libnsl.1.32_11.00.gz # 11.04
libnsl.a.32_11.00.gz # 11.04
libnsl.1.64_11.00.gz # 11.04
libnsl.a.64_11.00.gz # 11.04
libnsl.so.1.32_11.22IA.gz # 11.22
libnsl.so.1.64_11.22IA.gz # 11.22
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:
2405289836 8478720 PHNE_28929.depot
3587776374 220723 PHNE_28929.text
1995688196 7761920 PHNE_28930.depot
1940563530 126042 PHNE_28930.text
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
2149197207 1490400 libnsl.so.1.32_11.22IA
755476395 1565336 libnsl.so.1.64_11.22IA
MD5 (PHNE_28929.depot) = 27dbd58c15b07c1a725246f9c569ef15
MD5 (PHNE_28929.text) = 2d04406687c627125c125182529958ae
MD5 (PHNE_28930.depot) = 5af99e5f733a8ef639ef0ae36f6533d5
MD5 (PHNE_28930.text) = 0a2597f08dfc01db7c501b2ed91579f0
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
MD5 (libnsl.so.1.32_11.22IA) = 6da4151346312058269645856e16ac89
MD5 (libnsl.so.1.64_11.22IA) = f5f89dd00c66d03d7e14a72232c86f25
For 10.20
====================================
Go to init state 2
#DIR=[path to new files]
#cd /usr/lib
#cp libc.1 libc.1.orig
#cp $DIR/libc.1 libc.1.new
#chown bin libc.1.new
#chgrp bin libc.1.new
#chmod 555 libc.1.new
#/sbin/mv libc.1 was.libc.1
#/sbin/mv libc.1.new libc.1
Reboot the system.
rm /usr/lib/was.libc.1
For 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 11.00 and 11.11 (11i)
====================================
Install the appropriate preliminary patch
swinstall:
PHNE_28929.depot #11.00
PHNE_28930.depot #11.11
Install libc.1 as follows:
#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.1 must be
restarted. Any applications that use libnsl.a must
be relinked and restarted.
Rebooting is the recommended way to restart the applications
using libnsl.1 or libc.1.
For 11.22 IA
====================================
#DIR=[path to new files]
#cd /usr/lib/hpux32
#cp $DIR/libnsl.so.1.32_11.22.IA libnsl.so.1.new
#chmod 555 libnsl.so.1.new
#chown bin:bin libnsl.so.1.new
#mv libnsl.so.1 libnsl.so.1.orig
#mv libnsl.so.1.new libnsl.so.1
#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
#cd /usr/lib/hpux64
#cp $DIR/libnsl.so.1.64_11.22.IA libnsl.so.1.new
#chmod 555 libnsl.so.1.new
#chown bin:bin libnsl.so.1.new
#mv libnsl.so.1 libnsl.so.1.orig
#mv libnsl.so.1.new libnsl.so.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
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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 2003 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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