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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0375 -- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0303-252 Potential Security Vulnerability in xdrmem_getbytes() (rev.3) 22 May 2003 =========================================================================== 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-2003.0310 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ----------------------------------------------------------------- **REVISED 03** Source: HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0303-252 Originally issued: 19 March 2003 Last revised: 20 May 2003 SSRT2439 Potential Security Vulnerability in xdrmem_getbytes() (rev.3) ----------------------------------------------------------------- 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 **REVISED 03** SOLUTION: Until patches are available manually install the --> appropriate fixed libraries. Patches are now --> available for 11.00 and 11.11 which eliminate --> the maunal installation of all but libc.1. 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 ----------------------------------------------------------------- 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. 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 -->For 11.00 and 11.11, install the following patches. --> 11.00 - PHNE_28567 --> 11.11 - PHNE_28568 -->It is still necessary to install libc.1 manually. Until patches are released, download and manually install the appropriate libraries. System: hprc.external.hp.com (184.108.40.206) Login: xdr2 Password: xdr2 Browser ftp access: ftp://xdr2:firstname.lastname@example.org/ or ftp://xdr2:email@example.com/ 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 --> 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: 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 (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 **REVISED 03** --> 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. **REVISED 03** --> For 11.00 and 11.11 (11i) ==================================== #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. 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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) <firstname.lastname@example.org> Fingerprint = 6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59 If you have problems locating the key please write to email@example.com. Please note that this key is for signing bulletins only and is not the key returned by sending 'get key' to firstname.lastname@example.org. D. To report new security vulnerabilities, send email to email@example.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 firstname.lastname@example.org. ----------------------------------------------------------------- (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. ________________________________________________________________ - -----BEGIN PGP SIGNATURE----- Version: PGP Personal Security 7.0.3 iQA/AwUBPsqLYOAfOvwtKn1ZEQIn6ACffUvBHEIRM/JXh97R5f4BOIaRUqQAoNfJ 7deaYOnKHR/ZmxhTKssUZr3U =bWTQ - -----END PGP SIGNATURE----- - --------------------------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 email@example.com and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: firstname.lastname@example.org 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 iQCVAwUBPsyhFyh9+71yA2DNAQHZjQQAjQQn0FdqQfEowY29IMbMPnngFdEgPrHj nN3qKXHlRX+NPphdvQYrUXG9oTGEaOFg2Mnm5rNYeiFB1h7N3hbywUczfwBucO1N 4wFsDqBnmj8W00Z7Axe8dwcHTW8wnjkU3mcdJj//6BgDiAWxodDuekPxOLxtqE0H XoDNOzNohO8= =pcv2 -----END PGP SIGNATURE-----