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Cisco IOS XE Software Crafted Network Time Protocol Packets 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 processing of Network Time Protocol (NTP) packets by Cisco IOS XE could allow an unauthenticated, remote attacker to cause an interface wedge and an eventual denial of service (DoS) condition on the affected device. The vulnerability is due to insufficient checks on clearing the invalid NTP packets from the interface queue. An attacker could exploit this vulnerability by sending a number of crafted NTP packets to be processed by an affected device. An exploit could allow the attacker to cause an interface wedge and an eventual denial of service (DoS) condition on the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. However, there is a mitigation for this vulnerability.
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.