CERT Vendor-Initiated Bulletin VB-95:09 - Hewlett-Packard
CERT Vendor-Initiated Bulletin VB-95:09 December 14, 1995 Topic: Security vulnerability in ftp in releases 9.X and 10.X of HP-UX Source: Hewlett-Packard Company To aid in the wide distribution of essential security information, the CERT Coordination Center is forwarding the following information from Hewlett-Packard. HP urges you to act on this information as soon as possible. HP contact information is included in the forwarded text below; please contact them if you have any questions or need further information. ========================FORWARDED TEXT STARTS HERE============================ - ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX9511-028, 28 Nov 95 - ------------------------------------------------------------------------- Hewlett-Packard recommends that the information in the following Security Bulletin should be acted upon as soon as possible. Hewlett- Packard 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: Security vulnerability in ftp in releases 9.X and 10.X of HP-UX PLATFORM: HP 9000 series 300/400s and 700/800s DAMAGE: A vulnerability in ftp behavior exists which involves ftp server bouncing. This is a cumulative ftp(1) and ftpd(1M) patch. SOLUTION: Apply patch PHNE_6013 (series 700/800, HP-UX 9.x), or PHNE_6014 (series 700/800, HP-UX 10.x), or PHNE_6146 (series 300/400, HP-UX 9.x), or PHNE_6170 (series 700, HP-UX 9.09), or PHNE_6169 (series 700, HP-UX 9.09+), or PHNE_6171 (series 800, HP-UX 9.08) PHNE_5965 (series 700, HP-UX 10.09) AVAILABILITY: All patches are available now, except for the 9.0X BLS patches which will be available after January 2, 1996. _______________________________________________________________________ I. Update A. Vulnerability The vulnerability allows users to exploit ftp. If these patches are properly installed, the vulnerability cannot be exploited. It has been found that all HP-UX systems have this vulnerability. B. Fixing the problem The vulnerability can be eliminated from releases 9.x and 10.x of HP-UX by applying a patch. To treat only the commercial releases of HP-UX prior to 9.x, administrators should make plans to upgrade their systems to a currently supported release listed above. Hewlett-Packard recommends that all customers concerned with the security of their HP-UX systems apply the appropriate patch described above as soon as possible. Side effects: none. C. How to Install the Patch (for HP-UX 9.x and 10.x) 1. Determine which patch is appropriate for your hardware platform and operating system: For the Commercial HP-UX releases: PHNE_6013 (series 700/800, HP-UX 9.x), or PHNE_6014 (series 700/800, HP-UX 10.x), or PHNE_6146 (series 300/400, HP-UX 9.x). For the BLS HP-UX releases: PHNE_6169 (series 700, HP-UX 9.09+), or PHNE_6170 (series 700, HP-UX 9.09), or PHNE_6171 (series 800, HP-UX 9.08), or PHNE_5965 (series 700, HP-UX 10.09). The three 9.0x B Level Security (BLS) patches will be available after January 2, 1996. 2. Hewlett Packard's HP-UX patches are available via email and World Wide Web. To obtain a copy of the HP SupportLine email service user's guide, send the following in the TEXT PORTION OF THE MESSAGE to support@us.external.hp.com (no Subject is required): send guide The user's guide explains the process for downloading HP-UX patches via email and other services available. World Wide Web service for downloading of patches is available via our URL: (http://us.external.hp.com/) 3. Apply the patch to your HP-UX system. 4. Examine /tmp/update.log for any relevant WARNINGs or ERRORs. This can be done as follows: a. At the shell prompt, type "tail -60 /tmp/update.log | more" b. Page through the next three screens via the space bar, looking for WARNING or ERROR messages. D. Impact of the patch and workaround The patch for HP-UX releases 9.x and 10.x provides a new version of /usr/bin/ftp and /etc/ftpd which fixes the vulnerability. No patches will be available for versions of HP-UX prior to 9.0. To protect those affected systems, we recommend upgrading to a currently supported release of HP-UX. E. To subscribe to automatically receive future NEW HP Security Bulletins from the HP SupportLine mail service via electronic mail, send an email message to: support@us.external.hp.com (no Subject is required) Multiple instructions are allowed in the TEXT PORTION OF THE MESSAGE, here are some basic instructions you may want to use: To add your name to the subscription list for new security bulletins, send the following in the TEXT PORTION OF THE MESSAGE: subscribe security_info To retrieve the index of all HP Security Bulletins issued to date, send the following in the TEXT PORTION OF THE MESSAGE: send security_info_list To get a patch matrix of current HP-UX and BLS security patches referenced by either Security Bulletin or Platform/OS, put the following in the text portion of your message: send hp-ux_patch_matrix World Wide Web service for browsing of bulletins is available via our URL: (http://us.external.hp.com/) Choose "Support news", then under Support news, choose "Security Bulletins" F. To report new security vulnerabilities, send email to security-alert@hp.com _______________________________________________________________________ ============================================================================== ***HP SupportLine Mail Service Notice*** This digest contains a summary of all newly received Security Bulletins. You do not have to have any form of support from Hewlett-Packard to subscribe to this digest or to procure the recommended patches via the HP SupportLine mail service. - ---------------------------------------------------------------------------- To obtain a copy of the HP SupportLine mail service user's guide, send the following (in the TEXT PORTION OF THE MESSAGE to) to the HP SupportLine mail service. To: support@us.external.hp.com Message Text: send guide - ---------------------------------------------------------------------------- To obtain a patch identified within this Security Bulletin, send the following (in the TEXT PORTION OF THE MESSAGE) to the HP SupportLine mail service. To: support@us.external.hp.com Message Text: send xxxxxxxxxxxx (where xxxxxxxxxxxx represents the specified patch name). - ---------------------------------------------------------------------------- If you have concerns about security issues, please forward them to: security-alert@hp.com The security-alert node is monitored during working hours Pacific Daylight Time by multiple HP Security Response Team personnel. We reply to your message only if necessary to obtain additional information. - ---------------------------------------------------------------------------- If you would like to be REMOVED from this mailing lists, send the following (in the TEXT PORTION OF THE MESSAGE) to the HP SupportLine mail service. To: support@us.external.hp.com Message Text: unsubscribe security_info =========================FORWARDED TEXT ENDS HERE============================= CERT publications, information about FIRST representatives, and other information related to computer security are available for anonymous FTP from info.cert.org. CERT advisories and bulletins are also posted on the USENET newsgroup comp.security.announce. If you would like to have future advisories and bulletins mailed to you or to a mail exploder at your site, please send mail to cert-advisory-request@cert.org. If you wish to send sensitive incident or vulnerability information to CERT staff by electronic mail, we strongly advise that the e-mail be encrypted. The CERT Coordination Center can support a shared DES key, PGP (public key available via anonymous FTP on info.cert.org), or PEM (contact CERT staff for details). Internet email: cert@cert.org Telephone: +1 412-268-7090 (24-hour hotline) CERT personnel answer 8:30 a.m.-5:00 p.m. EST(GMT-5)/EDT(GMT-4), and are on call for emergencies during other hours. Fax: +1 412-268-6989 CERT Coordination Center Software Engineering Institute Carnegie Mellon University Pittsburgh, PA 15213-3890 USA CERT is a service mark of Carnegie Mellon University.
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