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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| N9k-c92160yc-x | Cisco | - (including) | - (including) |
| N9k-c92300yc | Cisco | - (including) | - (including) |
| N9k-c92304qc | Cisco | - (including) | - (including) |
| N9k-c9232c | Cisco | - (including) | - (including) |
| N9k-c92348gc-x | Cisco | - (including) | - (including) |
| N9k-c9236c | Cisco | - (including) | - (including) |
| N9k-c9272q | Cisco | - (including) | - (including) |
| N9k-c93108tc-ex | Cisco | - (including) | - (including) |
| N9k-c93108tc-fx | Cisco | - (including) | - (including) |
| N9k-c9316d-gx | Cisco | - (including) | - (including) |
| N9k-c93180lc-ex | Cisco | - (including) | - (including) |
| N9k-c93180yc-ex | Cisco | - (including) | - (including) |
| N9k-c93180yc-fx | Cisco | - (including) | - (including) |
| N9k-c93180yc2-fx | Cisco | - (including) | - (including) |
| N9k-c93216tc-fx2 | Cisco | - (including) | - (including) |
| N9k-c93240yc-fx2 | Cisco | - (including) | - (including) |
| N9k-c9332c | Cisco | - (including) | - (including) |
| N9k-c93360yc-fx2 | Cisco | - (including) | - (including) |
| N9k-c9336c-fx2 | Cisco | - (including) | - (including) |
| N9k-c9348gc-fxp | Cisco | - (including) | - (including) |
| N9k-c93600cd-gx | Cisco | - (including) | - (including) |
| N9k-c9364c | Cisco | - (including) | - (including) |
| N9k-c9364c-gx | Cisco | - (including) | - (including) |