Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Arista Networks EOS
Default version status: affected
4.36.0affected4.35.0 to ≤ 4.35affected4.34.0 to ≤ 4.34affected4.33.0 to ≤ 4.33affected4.32.0 to ≤ 4.32affected4.31.0 to ≤ 4.31affected* to ≤ 4.30affected