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Cisco IOS Software DNS Forwarder Denial of Service Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
A vulnerability in the DNS forwarder functionality of Cisco IOS Software could allow an unauthenticated, remote attacker to cause the device to reload, corrupt the information present in the device's local DNS cache, or read part of the process memory.
Insight
Insight
The vulnerability is due to a flaw in handling crafted DNS response messages. An attacker could exploit this vulnerability by intercepting and crafting a DNS response message to a client DNS query that was forwarded from the affected device to a DNS server.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
See the referenced vendor advisory for a solution.