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Cisco IOS XR Software Malformed RSVP Packet 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 RSVP processing of Cisco IOS XR could allow an unauthenticated, remote attacker to cause a reload of the RSVP process on the affected device. The vulnerability is due to improper parsing of a malformed RSVP packet. An attacker could exploit this vulnerability by sending a malformed RSVP packet to be processed by an affected device. An exploit could allow the attacker to cause a reload of the RSVP process on the affected device. Cisco has confirmed the vulnerability and released software updates. To exploit this vulnerability, an attacker may need access to trusted, internal networks behind a firewall to send numerous TCP sessions to the targeted device. This access requirement may reduce the likelihood of a successful exploit.
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.