Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability
A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. 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 ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74834"].
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2022-20623US | high7.5 | — | ||
A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- Cisco Nexus 1000V for VMware Switchexternal
- Cisco Nexus 3000 Series Switchesexternal
- Cisco Nexus 5500 Platform Switchesexternal
- Cisco Nexus 6000 Series Switchesexternal
- Cisco Nexus 9000 Series Switchesexternal
- Cisco Nexus 7000 Series Switchesexternal
- Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
Behebungen (39)
- BehobenCisco NX-OS Software 10.1(1) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 10.1(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 10.2(1) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 10.2(1q) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 10.2(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 10.2(2a) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I6(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(1) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(10) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(3) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(3z) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(4) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(5) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(5a) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(6) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(7) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(8) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(9) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)I7(9w) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)IA7(1) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 7.0(3)IA7(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.2(1) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.2(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.2(3) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.2(3y) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.2(4) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(1) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(1z) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(2) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(3) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(4) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(5) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(5w) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(6) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(7) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(7a) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(7k) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - BehobenCisco NX-OS Software 9.3(8) when installed on Cisco Nexus 9000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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