A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote malicious user to trigger a reload, resulting in a denial of service condition on an affected device. The vulnerability is due to insufficient error handling when parsing DNS requests. An attacker could exploit this vulnerability by sending a series of malicious DNS requests to an Umbrella Connector client interface of an affected device. A successful exploit could allow the malicious user to cause a crash of the iosd process, which triggers a reload of the affected device.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
cisco ios_xe 16.12.1 |
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cisco ios_xe 16.12.2 |
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cisco ios_xe 17.1.1 |
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