A vulnerability in the implementation of Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an unauthenticated attacker who is in the same IS-IS area to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of IS–IS link-state protocol data units (PDUs). An attacker could exploit this vulnerability by sending specific link-state PDUs to an affected system to be processed. A successful exploit could allow the attacker to cause incorrect calculations used in the weighted remote shared risk link groups (SRLG) or in the IGP Flexible Algorithm. It could also cause tracebacks to the logs or potentially cause the receiving device to crash the IS–IS process, resulting in a DoS condition.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2019-08-07T21:10:21.824782Z

Updated: 2024-11-21T19:18:11.727Z

Reserved: 2018-12-06T00:00:00

Link: CVE-2019-1918

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2019-08-07T22:15:15.447

Modified: 2020-10-16T14:36:36.990

Link: CVE-2019-1918

cve-icon Redhat

No data.