var-201908-1008
Vulnerability from variot

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. Cisco IOS XR The software contains an input validation vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. Cisco IOS XR is an operating system developed by Cisco for its network equipment. Attackers can exploit this vulnerabilityvulnerability to crash the IS–IS process, resulting in denial of service

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