18 January 2018
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0187 Cisco UCS Central Software IPv6 Denial of Service Vulnerability 18 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco UCS Central Software Publisher: Cisco Systems Operating System: Cisco Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-0094 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180117-ucs - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Advisory Cisco UCS Central Software IPv6 Denial of Service Vulnerability Medium Advisory ID: cisco-sa-20180117-ucs First Published: 2018 January 17 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCuv34544 CVSS Score: Base 5.3 Base 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:X CVE-2018-0094 CWE-693 Summary A vulnerability in IPv6 ingress packet processing for Cisco UCS Central Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to high CPU utilization on the targeted device. The vulnerability is due to insufficient rate limiting protection for IPv6 ingress traffic. An attacker could exploit this vulnerability by sending the affected device a high rate of IPv6 packets. Successful exploitation could allow the attacker to cause a DoS condition due to CPU and resource constraints. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180117-ucs Affected Products Vulnerable Products This vulnerability affects Cisco UCS Central Software. For information about affected software releases, consult the Cisco bug ID(s) at the top of this advisory. Products Confirmed Not Vulnerable No other Cisco products are currently known to be affected by this vulnerability. Workarounds There are no workarounds that address this vulnerability. Fixed Software For information about fixed software releases, consult the Cisco bug ID(s) at the top of this advisory. When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Exploitation and Public Announcements The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source This vulnerability was found during internal security testing. URL https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180117-ucs Revision History Version Description Section Status Date 1.0 Initial public release. Final 2018-January-17 LEGAL DISCLAIMER THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products. - --------------------------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 firstname.lastname@example.org and we will forward your request to the appropriate person. NOTE: Third Party Rights 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 follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. 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 author's website 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: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: email@example.com 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 iQIVAwUBWl/uIYx+lLeg9Ub1AQgj/g/+Oubyin3d6BG3Lr97SUgGDW1XTgTrjssP EpcPJJMFJskLwYdWSXmTt4SerILEACfagwdefl6CeU0T0qLMCrehCCCRTVSkeoS/ EsA7Q9DilsjxprhSJlRlEQz13SpmmXBG0eJrmKzenjqRY/yWCUtLdQ1llxuXP5od r+uvsWdO5h8NuuhtDuIWe3dMaZvkybWGHdxADxCiqwkwbvgIe/efB3DP1irC1Hmo A5wG4eaHYDbox1mNaxVdlDeRKqePhmxKADGe0JVzP5Inj9rJ89p3popg86zbiIRK my84ohlmJBGKCJZPlm7UTT3MyeXJfRWTawNpNsv8eqYnAKEd+KTmQWRu7pEkXMNp UN7X6kMjz+Lf+6qTJAdd7u0AwUuS1F+G9A04iGgfywu9pCPAlbBTsFwUrmC28hKM wFihkpA/ICr6GG2RMzgYqR3ga34RHTcObSRorlHhlKqZk3RWOWX0MdOWVUruFsgh 8ZMLypaA1Xh0xJL0c70543tmASi/efGtUR6CEiZEw3FAP+sbxsCQLvif4hGsKPMq fhy0x/k+Roy46ve/5QYwx4sGiHwj7gy5/F5eWriXHy8LfrwEp4z/5BiUSs6bZA+U DIZxmDq8JDKNOrGy8Arl4Tk6LVKjl5di5gKqSRx80/+2TLUnzPgPUykg4iAB8FjT ozWyeGAD+DQ= =HOQo -----END PGP SIGNATURE-----