****************************************************************************** ------ ----- ----- --- ----- | ----- ---- | | | | | |--- | | | | | | | | | |-- | | | | |-- | | | | | | | | \ | | ----- ---- ----- ----- | \ ----- A D V I S O R Y 97.69 ****************************************************************************** Topic: HP-UX Denial of Service via telnet Vulnerability Source: CIAC Creation Date: October 1, 1997 17:00 GMT Last Updated: To aid in the wide distribution of essential security information, FedCIRC is forwarding the following information from CIAC bulletin I-001. FedCIRC urges you to act on this information as soon as possible. If you have any questions, please contact FedCIRC: Telephone: +1 888 282 0870 Email: fedcirc@fedcirc.gov =======================FORWARDED TEXT STARTS HERE============================ -----BEGIN PGP SIGNED MESSAGE----- [ For Public Release ] __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN HP-UX Denial of Service via telnet Vulnerability October 1, 1997 17:00 GMT Number I-001 ______________________________________________________________________________ PROBLEM: A vulnerability has been discoveded in the telnet service provided with HP-UX release 10.30. PLATFORM: HP 9000 Series 700/800s running HP-UX release 10.30. DAMAGE: Denial of Service SOLUTION: Apply available patch. ______________________________________________________________________________ VULNERABILITY Hewlett-Packard recommends that the information in this ASSESSMENT: advisory be acted upon as soon as possible. ______________________________________________________________________________ [ Start Hewlett-Packard Advisory ] Document ID: HPSBUX9710-070 Date Loaded: 971001 Title: Security Bulletin for telnet services in HP-UX rel. 10.30 - ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY BULLETIN: #00070, 1 Oct. 1997 - ------------------------------------------------------------------------- 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: Potential denial of service (DOS) attack via the telnet service PLATFORM: HP 9000 Series 700/800s running HP-UX release 10.30 DAMAGE: Denial of Service on systems running HP-UX release 10.30. SOLUTION: Apply the following patch: PHNE_12608 for HP-UX release 10.30 AVAILABILITY: The patch is available now. - ------------------------------------------------------------------------- I. A. Background Hewlett-Packard Company has discovered a defect in the telnet service provided with HP-UX release 10.30. Under some circumstances this defect could be used to cause a denial of service on the destination HP-UX release 10.30 system. B. Fixing the problem Install patch PHNE_12608 on all HP-UX release 10.30 systems. C. Recommended solution The patch is a cumulative patch and and fully fixes the discovered vulnerability. D. To subscribe to automatically receive future NEW HP Security Bulletins from the HP SupportLine Digest service via electronic mail, do the following: 1) From your Web browser, access the URL: http://us-support.external.hp.com (for US,Canada, Asia-Pacific, and Latin-America) http://europe-support.external.hp.com (for Europe) 2) On the HP Electronic Support Center main screen, select the hyperlink "Support Information Digests". 3) On the "Welcome to HP's Support Information Digests" screen, under the heading "Register Now", select the appropriate hyperlink "Americas and Asia-Pacific", or "Europe". 4) On the "New User Registration" screen, fill in the fields for the User Information and Password and then select the button labeled "Submit New User". 5) On the "User ID Assigned" screen, select the hyperlink "Support Information Digests". ** Note what your assigned user ID and password are for future reference. 6) You should now be on the "HP Support Information Digests Main" screen. You might want to verify that your email address is correct as displayed on the screen. From this screen, you may also view/subscribe to the digests, including the security bulletins digest. To get a patch matrix of current HP-UX and BLS security patches referenced by either Security Bulletin or Platform/OS, click on following screens in order: Technical Knowledge Database Browse Security Bulletins Security Bulletins Archive HP-UX Security Patch Matrix E. 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. Permission is granted for copying and circulating this Bulletin to Hewlett-Packard (HP) customers (or the Internet community) for the purpose of alerting them to problems, if and only if, the Bulletin is not edited or changed in any way, is attributed to HP, and provided such reproduction and/or distribution is performed for non-commercial purposes. Any other use of this information is prohibited. HP is not liable for any misuse of this information by any third party. _______________________________________________________________________ - -----End of Document ID: HPSBUX9710-070-------------------------------------- [ End Hewlett-Packard Advisory ] ______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Hewlett-Packard for the information contained in this bulletin. ______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 510-422-8193 FAX: +1 510-423-8002 STU-III: +1 510-423-2604 E-mail: ciac@llnl.gov For emergencies and off-hour assistance, DOE, DOE contractor sites, and the NIH may contact CIAC 24-hours a day. During off hours (5PM - 8AM PST), call the CIAC voice number 510-422-8193 and leave a message, or call 800-759-7243 (800-SKY-PAGE) to send a Sky Page. CIAC has two Sky Page PIN numbers, the primary PIN number, 8550070, is for the CIAC duty person, and the secondary PIN number, 8550074 is for the CIAC Project Leader. Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://ciac.llnl.gov/ Anonymous FTP: ciac.llnl.gov (198.128.39.53) Modem access: +1 (510) 423-4753 (28.8K baud) +1 (510) 423-3331 (28.8K baud) CIAC has several self-subscribing mailing lists for electronic publications: 1. CIAC-BULLETIN for Advisories, highest priority - time critical information and Bulletins, important computer security information; 2. CIAC-NOTES for Notes, a collection of computer security articles; 3. SPI-ANNOUNCE for official news about Security Profile Inspector (SPI) software updates, new features, distribution and availability; 4. SPI-NOTES, for discussion of problems and solutions regarding the use of SPI products. Our mailing lists are managed by a public domain software package called Majordomo, which ignores E-mail header subject lines. To subscribe (add yourself) to one of our mailing lists, send the following request as the E-mail message body, substituting ciac-bulletin, ciac-notes, spi-announce OR spi-notes for list-name: E-mail to ciac-listproc@llnl.gov or majordomo@tholia.llnl.gov: subscribe list-name e.g., subscribe ciac-notes You will receive an acknowledgment email immediately with a confirmation that you will need to mail back to the addresses above, as per the instructions in the email. This is a partial protection to make sure you are really the one who asked to be signed up for the list in question. If you include the word 'help' in the body of an email to the above address, it will also send back an information file on how to subscribe/unsubscribe, get past issues of CIAC bulletins via email, etc. PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) H-101: FreeBSD procfs Vulnerability H-102: SGI IRIX webdist.cgi, handler and wrap programs Vulnerabilities H-103: HP-UX X11/Motif Libraries Vulnerability H-104: HP-UX libXt Vulnerability H-105: HP-UX vuefile, vuepad, dtfile, & dtpad Vulnerabilities H-106: SGI IRIX LOCKOUT & login/scheme Vulnerabilities H-107: UNIX Buffer Overflow in rdist Vulnerability H-108: SunOS, Solaris libX11 Buffer Overflow Vulnerability H-109: Solaris DCE and AFS Integrated login Vulnerability H-110: Samba Servers Vulnerability -----BEGIN PGP SIGNATURE----- Version: 4.0 Business Edition iQCVAwUBNDVYvrnzJzdsy3QZAQGopAQA+HR55GMSKMYCNj/F3HWiN4ZnTYwIzA8J NTQix8saoaY5VxLp0SQcdjvfuU9fvFM1dSlIbttcv/K7wfCgJ8rUclmKdAbcwLDa 4U3VoIcrgJx++cP8hAGsW8FQs6qFIc6ShnDLS4hvdlWFvFefT/PCeo/QHKqlaJGQ 6/4N7G0leq0= =1FaU -----END PGP SIGNATURE----- ========================FORWARDED TEXT ENDS HERE============================= The National Institute of Standards and Technology (NIST) has established a Federal Computer Incident response Capability (FedCIRC) to assist federal civilians agencies in their incident handling efforts by providing proactive and reactive computer security related services. FedCIRC is a partnership among NIST, the Computer Incident Advisory Capability (CIAC), and the CERT* Coordination Center (CERT/CC). If you believe that your system has been compromised, please contact FedCIRC: Telephone: +1 888 282 0870 Email: fedcirc@fedcirc.gov Web Server: http://www.fedcirc.gov/ * Registered in U.S. Patent and Trademark Office The CERT Coordination Center is part of the Software Engineering Institute. The Software Engineering Institute is sponsored by the U.S. Department of Defense. CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes.