CVE-2019-1918

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Summary

CVECVE-2019-1918
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-08-07 22:15:00 UTC
Updated2020-10-16 14:36:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-682

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Carrier Routing System 6.5.1 All All All
Operating System Cisco Carrier Routing System 6.5.3 All All All
Operating System Cisco Carrier Routing System 6.5.1 All All All
Operating System Cisco Carrier Routing System 6.5.3 All All All
Operating System Cisco Ios Xr All All All All
Operating System Cisco Ios Xr All All All All

References

ReferenceSourceLinkTags
Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability CISCO tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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