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 malicious users 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
cisco content services switch 11000 |
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cisco content services switch 11500 |
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