Headline
CVE-2018-0298: Cisco Security Advisory: Cisco FXOS Software and UCS Fabric Interconnect Web UI Denial of Service Vulnerability
A vulnerability in the web UI of Cisco FXOS and Cisco UCS Fabric Interconnect Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to incorrect input validation in the web UI. An attacker could exploit this vulnerability by sending a malicious HTTP or HTTPS packet directed to the physical management interface of an affected system. A successful exploit could allow the attacker to cause the process to crash and possibly reload the device, resulting in a denial of service (DoS) condition on the affected system. This vulnerability affects Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvb61398, CSCvb86799.
Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
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.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.htmlCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in the applicable table in this section. To help ensure a complete upgrade solution, consider that this advisory is part of a collection. For a complete list of the advisories in the collection and links to them, see Cisco Event Response: June 2018 Cisco FXOS and NX-OS Software Security Advisory Collection.
In the following tables, the left column lists releases of Cisco FXOS or NX-OS Software. The center column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. The right column indicates whether a release is affected by all the vulnerabilities described in this collection of advisories and which release includes fixes for those vulnerabilities.
Firepower 4100 Series Next-Generation Firewall: CSCvb61398
Cisco FXOS Software
First Fixed Release for This Vulnerability
First Fixed Release for All Vulnerabilities Described in the Collection of Advisories
1.1
1.1.4.169
2.0.1.159 or 2.3.1.58
2.0
2.0.1.135
2.0.1.159 or 2.3.1.58
2.1
Not vulnerable
2.1.1.86 or 2.3.1.58
2.2
Not vulnerable
2.2.2.17 or 2.3.1.58
2.3
Not vulnerable
Not vulnerable
Firepower 9300 Security Appliance: CSCvb61398
Cisco FXOS Software
First Fixed Release for This Vulnerability
First Fixed Release for All Vulnerabilities Described in the Collection of Advisories
1.1
1.1.4.169
2.0.1.159 or 2.3.1.58
2.0
2.0.1.135
2.0.1.159 or 2.3.1.58
2.1
Not vulnerable
2.1.1.86 or 2.3.1.58
2.2
Not vulnerable
2.2.2.17 or 2.3.1.58
2.3
Not vulnerable
Not vulnerable
UCS 6200 and 6300 Fabric Interconnects: CSCvb86799
Cisco NX-OS Software
First Fixed Release for This Vulnerability
First Fixed Release for All Vulnerabilities Described in the Collection of Advisories
Prior to 2.2
Not vulnerable
3.2(2b)
2.2
Not vulnerable
3.2(2b)
2.5
Not vulnerable
3.2(2b)
3.0(1)
Not vulnerable
3.2(2b)
3.0(2)
3.1(3a)
3.2(2b)
3.1
3.1(3a)
3.2(2b)
3.2
Not vulnerable
3.2(2b)