The DNS server for Cisco Content Service Switch (CSS) 11000 and 11500, when prompted for a nonexistent AAAA record, responds with response code 3 (NXDOMAIN or Name Error) instead of response code 0 (No Error), which allows remote attackers to cause a denial of service (inaccessible domain) by forcing other DNS servers to send and cache a request for a AAAA record to the vulnerable server.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Content_services_switch_11500 | Cisco | * | * |
| Content_services_switch_11000 | Cisco | * | * |