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AUSCERT External Security Bulletin Redistribution
ESB-2018.0187
Cisco UCS Central Software IPv6 Denial of Service Vulnerability
18 January 2018
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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
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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.
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