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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0441 -- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0302-242 Potential security vulnerability in rpc.yppasswdd 25 June 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rpc.yppasswdd Publisher: Hewlett-Packard Operating System: HP-UX 11.22 HP-UX 11.11 HP-UX 11.00 HP-UX 10.20 HP-UX 10.10 Platform: HP9000 Series 700 and 800 Impact: Denial of Service Inappropriate Access Access Required: Remote Ref: ESB-2003.0088 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ----------------------------------------------------------------- **REVISED 01** Source: HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0302-242 Originally issued: 12 February 2003 SSRT2330 Potential Security Vulnerability in rpc.yppasswdd Last revised: 23 June 2003 ----------------------------------------------------------------- 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 security vulnerability in rpc.yppasswdd IMPACT: Potential denial of service, unauthorized access. PLATFORM: HP 9000 Series 700 and 800 running HP-UX B.10.10, B.10.20, B.11.00, B.11.11, B.11.22 using rpc.yppasswdd. **REVISED 01** SOLUTION: For B.10.20 until a patch is available install the appropriate rpc.yppasswdd from the ftp site listed below. For B.11.00 install PHNE_28102. For B.11.11 install PHNE_28103. --> For B.11.22 install PHNE_28138. MANUAL ACTIONS: Yes - NonUpdate For B.10.20 install rpc.yppasswdd_10.20. For B.11.00 install PHNE_28102, no manual action. For B.11.11 install PHNE_28103, no manual action. --> For B.11.22 install PHNE_28138, no manual action. AVAILABILITY: The preliminary files are available now. This bulletin will be revised when patches are available. CHANGE SUMMARY: Rev.01 - Added fix for B.11.22. Changed o/s revision format to that returned by "uname -a". 11.11 -> B.11.11. ---------------------------------------------------------------- A. Background A potential buffer overflow has been reported in rpc.yppasswdd. The SSRT thanks LSD Research Group (http://lsd-pl.net) for reporting this potential vulnerability to HP. B. Recommended solution Note: Customers running HP-UX revision 10.10 should write to security-alert@hp.com for more information. **REVISED 01** 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.10.10 ============= NFS.NIS-SERVER fix: write to security-alert@hp.com for more information HP-UX B.10.20 ============= NFS.NIS-SERVER fix: Download and install rpc.yppasswdd_10.20 as described below. HP-UX B.11.00 ============= NFS.NIS-SERVER fix: Install PHNE_28102 or subsequent. HP-UX B.11.11 ============= NFS.NIS-SERVER fix: Install PHNE_28103 or subsequent. HP-UX B.11.22 ============= --> NFS.NIS-SERVER --> fix: Install PHNE_28138 or subsequent. For 10.20 the following preliminary fix is available: rpc.yppasswdd_10.20 cksum rpc.yppasswdd_10.20 575931685 28672 rpc.yppasswdd_10.20 MD5 (rpc.yppasswdd_10.20) = cf362f855dbb9493282686cf4823afec If you wish to verify the md5 sum please refer to: HPSBUX9408-016 Patch sums and the MD5 program Download the appropriate files from the ftp site. These files are temporary and will be deleted when patches are available. System: hprc.external.hp.com (192.170.19.51) Login: yppass Password: yppass FTP Access: ftp://bind:bind1@hprc.external.hp.com/ or: ftp://bind:bind1@192.170.19.51/ ftp://yppass:yppass@hprc.external.hp.com/ ftp://yppass:yppass@192.170.19.51/ Copy the appropriate file to a protected directory (called "<new_rpc.yppasswdd_path>" below) and rename it "rpc.yppasswdd". /sbin/rc2.d/S410nis.server stop cd /usr/lib/netsvc/yp cp rpc.yppasswdd rpc.yppasswdd.orig cp /<new_rpc.yppasswdd_path>/rpc.yppasswdd rpc.yppasswdd /sbin/rc2.d/S410nis.server stop 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. 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 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/AwUBPvdpi+AfOvwtKn1ZEQK5RwCg57RXPy1AH8LofF42PtTdkd2KRzoAn1Fd q/cV8GE/MnGclle2i+mr2Lro =+Ksk - -----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 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. 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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: 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----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBPvj5Dih9+71yA2DNAQGKigP+Lc/HbGO9UmPUDxa9EYgrPPD0pHFcmJBn xbvq+7iBadpnO5xR1ZNNLr+PlKFUcCsWkSXIMg6XV0Mp5xF/a6xizE1HLl0LRI/y OZ3DkQH90lZPJaO9YKZR3AO/IRxjaJzwsXOFewa7BihUGvyWd9eWn99GWsULnqYA mb8KVpWhWys= =x3na -----END PGP SIGNATURE-----