CVE-2018-0369

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Summary

CVECVE-2018-0369
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-07-16 17:29:00 UTC
Updated2019-10-09 23:31:00 UTC
DescriptionA vulnerability in the reassembly logic for fragmented IPv4 packets of Cisco StarOS running on virtual platforms could allow an unauthenticated, remote attacker to trigger a reload of the npusim process, resulting in a denial of service (DoS) condition. There are four instances of the npusim process running per Service Function (SF) instance, each handling a subset of all traffic flowing across the device. It is possible to trigger a reload of all four instances of the npusim process around the same time. The vulnerability is due to improper handling of fragmented IPv4 packets containing options. An attacker could exploit this vulnerability by sending a malicious IPv4 packet across an affected device. An exploit could allow the attacker to trigger a restart of the npusim process, which will result in all traffic queued toward this instance of the npusim process to be dropped while the process is restarting. The npusim process typically restarts within less than a second. This vulnerability affects: Cisco Virtualized Packet Core-Single Instance (VPC-SI), Cisco Virtualized Packet Core-Distributed Instance (VPC-DI), Cisco Ultra Packet Core (UPC). Cisco Bug IDs: CSCvh29613.

Risk And Classification

Problem Types: CWE-20

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco Asr 5000 - All All All
Hardware Cisco Asr 5000 - All All All
Hardware Cisco Asr 5500 - All All All
Hardware Cisco Asr 5500 - All All All
Hardware Cisco Asr 5700 - All All All
Hardware Cisco Asr 5700 - All All All
Operating System Cisco Staros All All All All
Operating System Cisco Staros All All All All

References

ReferenceSourceLinkTags
Cisco StarOS for ASR 5000 Series Routers CVE-2018-0369 Denial of Service Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
Cisco StarOS IPv4 Fragmentation Denial of Service Vulnerability CONFIRM 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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