On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic. This issue has been reported as being exploited in the wild.
| Vendor | Product | Versions |
|---|---|---|
| arista | eos | 4.36.0, 4.35.0, 4.34.0, 4.33.0, 4.32.0, 4.31.0, * |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| arista | 7280cr3-36s | cve_cpe | 95% |
| arista | 7020sr-24c2 | cve_cpe | 95% |
| arista | 7020sr-32c2 | cve_cpe | 95% |
| arista | 7020srg-24c2 | cve_cpe | 95% |
| arista | 7020tr-48 | cve_cpe | 95% |
