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Cisco IOS XR LPTS 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 Local Packet Transport Services (LPTS) network stack of Cisco IOS XR for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a limited denial of service (DoS) condition on an affected platform. The vulnerability is due to improper handling of flow base entries by LPTS. This can cause too many known entries for a protocol to be created, causing existing or new sessions to be dropped. An attacker could exploit this vulnerability by sending continuous connection attempts to the open TCP ports to cause an exhaustion of services. An exploit could allow the attacker to cause a limited DoS condition on an affected platform. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available.
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.