Published:
03 July 2002
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.331 -- Compaq Security Advisory (SSRT2263) HP Tru64 UNIX V5.1a - SSH V1.1 & OpenSSH Challenge Response Handling, Potential Security Vulnerability 4 July 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OpenSSH 2.3.1p1 through 3.3 Vendor: Compaq Impact: Execute Arbitrary Code/Commands Access Required: Remote Ref: AL-2002.05 AA-2002.05 ESB-2002.321 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 SECURITY BULLETIN SSRT2263 REVISION: 0 TITLE: SSRT2263 HP Tru64 UNIX V5.1a - SSH V1.1 & OpenSSH Challenge Response Handling, Potential Security Vulnerability NOTICE: There are no restrictions for distribution of this Bulletin provided that it remains complete and intact. RELEASE DATE: 3 July, 2002 SEVERITY: 2 SOURCE: Compaq Computer Corporation, a wholly-owned subsidiary of Hewlett-Packard Company and Hewlett-Packard Company HP Services Software Security Response Team REFERENCE: CERT CA-2002-18 PROBLEM SUMMARY: Compaq has been following the OpenSSH remote vulnerability that was announced June 26, 2002 and have determined that this issue is specific to OpenSSH and does not impact SSH V1.1 distributed with HP Tru64 UNIX V5.1a. HP Tru64 Unix V5.1a - SSH V1.1 implementation is not based on the OpenSSH product. The issue described in this recent OpenSSH advisory is in the challenge response phase of S/Key or BSD_Auth authentication processes. HP Tru64 UNIX V5.1a - SSH V1.1 implementation uses SIA for its password authentication and does not support S/Key. Our conclusion is based on the additional information that was released by the ISS X-Force and information provided by openssh.org ( http://www.openssh.com/ ) regarding this vulnerability. VERSIONS IMPACTED: o OpenSSH versions 2.3.1p1 through 3.3 o HP 9000 Servers running HP-UX release 11.00, and 11.11 only with the T1471AA SSH product installed. Please refer to the HP Security Bulletin HPSBUX0206-195, Sec. Vulnerability in OpenSSH on HP-UX available on http://itrc.hp.com in the Support Digests, under Archives. NOT Impacted: o HP Tru64 Unix V5.1a - SSH V1.1 o HP NonStop Servers o HP OpenVMS RESOLUTION: For customers using OpenSSH V2.9.9 and V3.3 on HP Tru64 Unix systems, HP recommends that you follow the procedures listed in the OpenSSH security advisory at web site http://www.openssh.com/ to correct the potential vulnerability. SUPPORT: For further information, contact HP Services. SUBSCRIBE: To subscribe to automatically receive future Security Advisories from the Software Security Response Team via electronic mail: http://www.support.compaq.com/patches/mailing-list.shtml REPORT: To report a potential security vulnerability with any Compaq supported product, send email to: mailto:security-ssrt@compaq.com or mailto:security-alert@hp.com HP and Compaq appreciate your cooperation and patience. As always, HP and Compaq urge you to periodically review your system management and security procedures. HP and Compaq will continue to review and enhance the security features of its products and work with our customers to maintain and improve the security and integrity of their systems. "HP and Compaq are broadly distributing this Security Bulletin in order to bring to the attention of users of the affected Compaq products the important security information contained in this Bulletin. HP and Compaq recommend that all users determine the applicability of this information to their individual situations and take appropriate action. Neither HP nor Compaq warrant that this information is necessarily accurate or complete for all user situations and, consequently, neither HP nor Compaq will be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin." Copyright 2002 Compaq Information Technologies Group, L.P. Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice. Compaq and the names of Compaq products referenced herein are trademarks of Compaq Information Technologies Group, L.P. in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. - -----BEGIN PGP SIGNATURE----- Version: PGP 7.0.1 iQA/AwUBPSM+ljnTu2ckvbFuEQLl7gCfQDSpaTZut726UE4O9x/mXOMG8osAoL41 wpiLFIxtd6wAK/RLenNvD58b =JZue - -----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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html 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. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPSRh2yh9+71yA2DNAQEhjAQAmx8bDBrxQz4tpX0sAytKkL0n5YU9EMXo OHNbn/Qxf85L25HmkmS/slRcOJLedI6P5atMTHBwVquUpjMB8wdIv4bQSu7KIBog 1NN4GvW6P3AuzBfw5CBe4FihtBL0BiLGyGM+llNCrhpgQbpiYwZ5CNtovF8CTsOB DVeJvp1kYWw= =k+aw -----END PGP SIGNATURE-----