cisco-sa-cfsoip-dos-tpykyDr: Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability
First published: Wed Feb 23 2022(Updated: )
A vulnerability in the Cisco Fabric Services over IP (CFSoIP) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of incoming CFSoIP packets. An attacker could exploit this vulnerability by sending crafted CFSoIP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cfsoip-dos-tpykyDr This advisory is part of the February 2022 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: February 2022 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication.
Credit: the National Security Agency (NSA).
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco NX-OS Software | =9.3(8)<Nexus 3000 and 9000 Series Switches=7.0(3)I7(10)<Nexus 3000 and 9000 Series Switches | Nexus 3000 and 9000 Series Switches Nexus 3000 and 9000 Series Switches |
| Cisco UCS Software | =4.2<4.2(1l)1>=4.0<=4.1<4.1(3h) | 4.2(1l)1 4.1(3h) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is cisco-sa-cfsoip-dos-tpykyDr.
What is the severity of cisco-sa-cfsoip-dos-tpykyDr?
The severity of cisco-sa-cfsoip-dos-tpykyDr is high with a score of 8.6.
What is affected by cisco-sa-cfsoip-dos-tpykyDr?
Cisco NX-OS Software versions 9.3(8), 7.0(3)I7(10), Nexus 3000 and 9000 Series Switches are affected by cisco-sa-cfsoip-dos-tpykyDr.
How can an attacker exploit cisco-sa-cfsoip-dos-tpykyDr?
An unauthenticated, remote attacker can exploit cisco-sa-cfsoip-dos-tpykyDr by sending specially crafted CFSoIP packets to a vulnerable device.
Is there a fix available for cisco-sa-cfsoip-dos-tpykyDr?
Yes, Cisco has released software updates to address cisco-sa-cfsoip-dos-tpykyDr. It is recommended to upgrade to the fixed software version.
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