Description
A vulnerability in the Border Gateway Protocol (BGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the device unexpectedly reloading. The vulnerability is due to incomplete input validation of the BGP update messages. An attacker could exploit this vulnerability by sending a crafted BGP update message to the targeted device. An exploit could allow the attacker to cause the switch to reload unexpectedly. The Cisco implementation of the BGP protocol only accepts incoming BGP traffic from explicitly defined peers. To exploit this vulnerability, an attacker must be able to send the malicious packets over a TCP connection that appears to come from a trusted BGP peer or inject malformed messages into the victim's BGP network. This would require obtaining information about the BGP peers in the affected system's trusted network. The vulnerability may be triggered when the router receives a malformed BGP message from a peer on an existing BGP session. At least one BGP neighbor session must be established for a router to be vulnerable. This vulnerability affects Nexus 2000 Series Switches, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 3600 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCve79599, CSCve87784, CSCve91371, CSCve91387.
Published: 2018-06-20
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2018-1118 A vulnerability in the Border Gateway Protocol (BGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the device unexpectedly reloading. The vulnerability is due to incomplete input validation of the BGP update messages. An attacker could exploit this vulnerability by sending a crafted BGP update message to the targeted device. An exploit could allow the attacker to cause the switch to reload unexpectedly. The Cisco implementation of the BGP protocol only accepts incoming BGP traffic from explicitly defined peers. To exploit this vulnerability, an attacker must be able to send the malicious packets over a TCP connection that appears to come from a trusted BGP peer or inject malformed messages into the victim's BGP network. This would require obtaining information about the BGP peers in the affected system's trusted network. The vulnerability may be triggered when the router receives a malformed BGP message from a peer on an existing BGP session. At least one BGP neighbor session must be established for a router to be vulnerable. This vulnerability affects Nexus 2000 Series Switches, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 3600 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCve79599, CSCve87784, CSCve91371, CSCve91387.
History

Fri, 29 Nov 2024 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco Nexus 172tq-xl Nexus 3016 Nexus 3048 Nexus 3064-32t Nexus 3064-t Nexus 3064-x Nexus 3100-v Nexus 31128pq Nexus 3132c-z Nexus 3132q Nexus 3132q-x Nexus 3132q-xl Nexus 3164q Nexus 3172pq Nexus 3172pq-xl Nexus 3172tq Nexus 3172tq-32t Nexus 3232c Nexus 3264c-e Nexus 3264q Nexus 34180yc Nexus 3524-x Nexus 3524-xl Nexus 3548 Nexus 3548-x Nexus 3548-xl Nexus 3636c-r Nexus 5000 Nexus 5010 Nexus 5020 Nexus 5548p Nexus 5548up Nexus 5596t Nexus 5596up Nexus 56128p Nexus 5624q Nexus 5648q Nexus 5672up Nexus 5696q Nexus 6001p Nexus 6001t Nexus 7000 Nexus 7700 Nexus 92160yc-x Nexus 92304qc Nexus 9236c Nexus 9272q Nexus 93108tc-ex Nexus 93120tx Nexus 93128tx Nexus 93180yc-ex Nexus 9332pq Nexus 9372px Nexus 9372tx Nexus 9396px Nexus 9396tx Nexus 9500 Nexus 9504 Nexus 9508 Nexus 9516 Nexus C36180yc-r Nexus N9k-c9508-fm-r Nexus N9k-x9636c-r Nexus N9k-x9636q-r Nx-os
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-29T15:02:09.803Z

Reserved: 2017-11-27T00:00:00.000Z

Link: CVE-2018-0295

cve-icon Vulnrichment

Updated: 2024-08-05T03:21:15.489Z

cve-icon NVD

Status : Modified

Published: 2018-06-20T21:29:00.437

Modified: 2024-11-21T03:37:55.090

Link: CVE-2018-0295

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses