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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.665 -- HP Support Information Digest HPSBUX0209-215 Security Vulnerability in XDR library (rev.2) 27 November 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: XDR Library Vendor: Hewlett-Packard Operating System: HP-UX 11.22 HP-UX 11.11 HP-UX 11.04 HP-UX 11.00 HP-UX 10.24 HP-UX 10.20 Platform: HP9000 Series 700 HP9000 Series 800 Impact: Execute Arbitrary Code/Commands Denial of Service Access Required: Remote Ref: AL-2002.09 ESB-2002.497 ESB-2002.394 - --------------------------BEGIN INCLUDED TEXT-------------------- Document ID: HPSBUX0209-215 Date Loaded: 20020909 Title: Security Vulnerability in XDR library (rev.2) TEXT ----------------------------------------------------------------- **REVISED 02** Source: HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0209-215 Originally issued: 09 September 2002 Last revised: 26 November 2002 SSRT2336 Security Vulnerability in XDR library ----------------------------------------------------------------- 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 XDR library. IMPACT: Potential unauthorized access, denial of service. **REVISED 02** - -->>PLATFORM: HP 9000 Series 700 and 800 10.20, 10.24, 11.00, 11.04, 11.11, and 11.22 SOLUTION: Until patches are available manually install the appropriate fixed libraries. Install PHCO_27882 for 10.24. MANUAL ACTIONS: Yes - NonUpdate Install the appropriate fixed libraries. Install PHCO_27882 for 10.24. Relink any archived programs that call xdr_array(). AVAILABILITY: This bulletin will be updated when patches are available. CHANGE SUMMARY: Rev.01 - corrected "strings" to "strings -a" Rev.02 - added 10.24 and 11.04, also added libc.1 for 11.00, 11.11, and 11.22. ------------------------------------------------------------------ A. Background CERT Advisory CA-2002-25 reports an integer overflow in certain implementations of XDR libraries. Libraries supplied - -->>with HP-UX 10.20, 10.24, 11,00, 11.04, 11.11, and 11.22 are potentially vulnerable. In addition, cross-reference: HP Tru64 UNIX: Case id: SSRT2309 rpc XDR_ARRAY A solution is available as noted in the recent security bulletin SSSRT2275 at http://thenew.hp.com/country/us/eng/support.html Use the SEARCH IN feature box, enter SSRT2275 in the search window. B. Recommended solution Until patches are released download and manually install the appropriate libraries. Note: It will be necessary to relink any programs that call xdr_array() and are linked with archived libraries. There are no known programs supplied by HP which need to be relinked. To test an archived program: strings -a suspect_program | grep xdr_array: If the command above returns "xdr_array: out of memory" the suspect_program will need to the relinked with a fixed library. Download the appropriate files from: System: hprc.external.hp.com (192.170.19.51) Login: xdr Password: xdr1 FTP Access: ftp://xdr:xdr1@hprc.external.hp.com/ or: ftp://xdr:xdr1@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. The files are: PHCO_26152.depot.gz **REVISED 02** - -->> libc.1.gz - -->> libc.1.PHCO_27882.gz libnsl.1.32_11.00.gz libnsl.a.32_11.00.gz libnsl.1.64_11.00.gz libnsl.a.64_11.00.gz libnsl.1.32_11.11.gz libnsl.a.32_11.11.gz libnsl.1.64_11.11.gz libnsl.a.64_11.11.gz libnsl.so.1.32_11.22.IA.gz libnsl.so.1.64_11.22.IA.gz The cksum output: 2238979170 9676800 PHCO_26152.depot - -->> 3415580416 1867776 libc.1 - -->> 1011129778 1814528 libc.1.PHCO_27882 3064646304 679936 libnsl.1.32_11.00 498505157 817544 libnsl.a.32_11.00 2630827583 648296 libnsl.1.64_11.00 2205456871 1454504 libnsl.a.64_11.00 744618112 724992 libnsl.1.32_11.11 3459917079 783940 libnsl.a.32_11.11 3659675326 702416 libnsl.1.64_11.11 3120598258 1520436 libnsl.a.64_11.11 2227616066 1490048 libnsl.so.1.32_11.22.IA 3162410426 1564768 libnsl.so.1.64_11.22.IA - -->> Note: The patches which supply the libc and libnsl - -->> libraries require that the system be rebooted. - -->> It would be best to carry out the manual - -->> installation below in init state 2 followed - -->> by a reboot. Otherwise programs which were - -->> running when the libraries were changed would - -->> continue to use the old version of the libraries. Copy the appropriate files to a secure directory, for example /. Then, For 10.20 ==================================== Install PHCO_26152.depot: swinstall -x autoreboot=true -x match_target=true \ -s /PHCO_26152.depot Any applications that use the RPC/XDR APIs in libc.a must be relinked and restarted. **REVISED 02** - -->> For 10.24 - -->> ==================================== - -->> Install PHCO_27882. This patch is available from - -->> the itrc. **REVISED 02** For 11.00 ==================================== #cd /usr/lib #cp libnsl.1 libnsl.1.orig #cp libnsl.a libnsl.a.orig - -->> #cp libc.1 libc.1.orig #cp /libnsl.1.32_11.00 libnsl.1 #cp /libnsl.a.32_11.00 libnsl.a - -->> #cp /libc.1 libc.1 #chmod 555 libnsl.1 #chmod 444 libnsl.a - -->> #chmod 555 libc.1 #chown bin:bin libnsl.1 #chown bin:bin libnsl.a. - -->> #chown bin:bin libc.1 #cd /usr/lib/pa20_64 #cp libnsl.1 libnsl.1.orig #cp libnsl.a libnsl.a.orig #cp /libnsl.1.64_11.00 libnsl.1 #cp /libnsl.a.64_11.00 libnsl.a #chmod 555 libnsl.1 #chmod 444 libnsl.a #chown bin:bin libnsl.1 #chown bin:bin 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. **REVISED 02** - -->> For 11.04 - -->> ==================================== - -->> #cd /usr/lib - -->> #cp libnsl.1 libnsl.1.orig - -->> #cp libnsl.a libnsl.a.orig - -->> #cp libc.1 libc.1.orig - -->> #cp /libnsl.1.32_11.00 libnsl.1 - -->> #cp /libnsl.a.32_11.00 libnsl.a - -->> #cp /libc.1.PHCO_27882 libc.1 - -->> #chmod 555 libnsl.1 - -->> #chmod 444 libnsl.a - -->> #chmod 555 libc.1 - -->> #chown bin:bin libnsl.1 - -->> #chown bin:bin libnsl.a. - -->> #chown bin:bin libc.1 - -->> #cd /usr/lib/pa20_64 - -->> #cp libnsl.1 libnsl.1.orig - -->> #cp libnsl.a libnsl.a.orig - -->> #cp /libnsl.1.64_11.00 libnsl.1 - -->> #cp /libnsl.a.64_11.00 libnsl.a - -->> #chmod 555 libnsl.1 - -->> #chmod 444 libnsl.a - -->> #chown bin:bin libnsl.1 - -->> #chown bin:bin 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. **REVISED 02** For 11.11 ==================================== #cd /usr/lib #cp libnsl.1 libnsl.1.orig #cp libnsl.a libnsl.a.orig - -->> #cp libc.1 libc.1.orig #cp /libnsl.1.32_11.11 libnsl.1 #cp /libnsl.a.32_11.11 libnsl.a - -->> #cp /libc.1 libc.1 #chmod 555 libnsl.1 #chmod 444 libnsl.a - -->> #chmod 555 libc.1 #chown bin:bin libnsl.1 #chown bin:bin libnsl.a. - -->> #chown bin:bin libc.1 #cd /usr/lib/pa20_64 #cp libnsl.1 libnsl.1.orig #cp libnsl.a libnsl.a.orig #cp /libnsl.1.64_11.11 libnsl.1 #cp /libnsl.a.64_11.11 libnsl.a #chmod 555 libnsl.1 #chmod 444 libnsl.a #chown bin:bin libnsl.1 #chown bin:bin 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 11.22 IA ==================================== #cd /usr/lib/hpux32 #cp libnsl.so.1 libnsl.so.1.orig #cp /libnsl.so.1.32_11.22.IA libnsl.so.1 #chmod 555 libnsl.so.1 #chown bin:bin libnsl.so.1 - -->> #cd /usr/lib - -->> #cp libc.1 libc.1.orig - -->> #cp /libc.1 libc.1 - -->> #chmod 555 libc.1 - -->> #chown bin:bin libc.1 #cd /usr/lib/hpux64 #cp libnsl.so.1 libnsl.so.1.orig #cp libnsl.so.1.64_11.22.IA libnsl.so.1 #chmod 555 libnsl.so.1 #chown bin:bin 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. 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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. 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". 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. ------------------------------------------------------------------ (c)Copyright 2002 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. ________________________________________________________________ - -----End of Document ID: HPSBUX0209-215-------------------------------------- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBPeSqiih9+71yA2DNAQGJDAP+JsDcU/7QSeVsb8NQw4B5QBaEw+Fg8q/t fqdqnkCrVE9IhvJIDftrlg2WiY3rujopcKZz5COur0Oj+kzuoBISgZfdGX9gpbtr NNwcvrRgdFvvskGbxiMT4Z8Ed+LQTIgTigvUCPLxAFnjJJqROyPQvW+thn7YeRPu O0Abz7xtT1A= =5eec -----END PGP SIGNATURE-----